TYCO INTERNATIONAL LTD /BER/
10-Q, 1997-08-14
GENERAL INDUSTRIAL MACHINERY & EQUIPMENT, NEC
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<PAGE>
                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                             _____________________

                                   FORM 10-Q

         [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934


                 For the quarterly period ended June 30, 1997

                        Commission file number 0-16979
______________________________________________________________________________

                          TYCO INTERNATIONAL LTD.
                       (formerly named ADT LIMITED)
          (Exact Name of Registrant as Specified in its Charter)


   BERMUDA                       Cedar House                 Not Applicable
(Jurisdiction of               41 Cedar Avenue              (I.R.S. Employer
Incorporation or           Hamilton HM12, Bermuda          Identification No.)
 Organization)         (Address of Principal Executive
                                  Offices)*                   Not Applicable
                                                                (Zip Code)

Registrant's telephone number, including area code 441-292-2033*   *See page i
______________________________________________________________________________

Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
such filing requirements for the past 90 days.                 YES [X] NO [ ]

At August 6, 1997, the number of shares outstanding of the registrant's common
shares par value $0.20 per share was 243,231,006 shares.
<PAGE>
                                  ADT LIMITED
                    (since renamed TYCO INTERNATIONAL LTD.)

                              INDEX TO FORM 10-Q
                    FOR THE SIX MONTHS ENDED JUNE 30, 1997

                                                                          PAGE

PART I  FINANCIAL INFORMATION

ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS
        CONSOLIDATED STATEMENTS OF INCOME FOR THE SIX MONTHS
        ENDED JUNE 30, 1997 AND 1996.......................................  1
        CONSOLIDATED STATEMENTS OF INCOME FOR THE THREE MONTHS
        ENDED JUNE 30, 1997 AND 1996.......................................  2
        CONSOLIDATED BALANCE SHEETS AT JUNE 30, 1997 AND
        DECEMBER 31, 1996..................................................  3
        CONSOLIDATED STATEMENTS OF CASH FLOWS FOR THE SIX MONTHS
        ENDED JUNE 30, 1997 AND 1996.......................................  4
        NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.........................  5
ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS.......................................... 19

PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.................................................. 26
ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K................................... 27
SIGNATURE.................................................................. 27

Registered and Principal Executive Offices

The registered and principal executive offices of Tyco International Ltd.
(formerly named ADT Limited) are located at Cedar House, 41 Cedar Avenue,
Hamilton HM12, Bermuda.  The executive offices of the subsidiary which
supervises the Company's North American activities are located in the United
States at One Tyco Park, Exeter, New Hampshire 03833.  The telephone number
there is 603-778-9700.


                                     i
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

PART I   FINANCIAL INFORMATION

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS

Consolidated Statements of Income (unaudited)

Six months ended June 30                                   1997        1996
                                                            $m          $m

Net sales                                                  923.9       833.7
Cost of sales                                             (470.4)     (445.1)
Selling, general and administrative expenses              (339.2)     (270.9)
Charge for the impairment of long-lived assets                 -      (744.7)
                                                          -------     -------
Operating income (loss)                                    114.3      (627.0)
Interest income                                             13.3        12.8
Interest expense                                           (43.1)      (54.1)
Other expenses less income                                  (0.2)        0.7
                                                          -------     -------
Income (loss) before income taxes                           84.3      (667.6)
Income taxes                                               (27.4)       (7.3)
                                                          -------     -------
Income (loss) before extraordinary items                    56.9      (674.9)
Extraordinary items                                            -        (1.2)
                                                          -------     -------
Net income (loss)                                           56.9      (676.1)
                                                          =======     =======
Primary earnings (loss) per common share                       $           $
Income (loss) before extraordinary items                    0.36       (4.95)
Extraordinary items                                            -       (0.01)
                                                          -------     -------
Net income (loss) per common share                          0.36       (4.96)
                                                          =======     =======
Fully diluted earnings (loss) per common share                 $           $
Income (loss) before extraordinary items                    0.35       (4.95)
Extraordinary items                                            -       (0.01)
                                                          -------     -------
Net income (loss) per common share                          0.35       (4.96)
                                                          =======     =======

See notes to consolidated financial statements


                                     1
<PAGE>

                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Consolidated Statements of Income (unaudited)

Three months ended June 30                                  1997        1996
                                                             $m          $m

Net sales                                                  463.2       422.4
Cost of sales                                             (231.1)     (223.6)
Selling, general and administrative expenses              (183.7)     (139.0)
                                                          -------     -------
Operating income                                            48.4        59.8
Interest income                                              8.6         6.3
Interest expense                                           (21.7)      (26.7)
Other expenses less income                                  (0.2)        1.0
                                                          -------     -------
Income before income taxes                                  35.1        40.4
Income taxes                                               (13.2)       (9.7)
                                                          -------     -------
Income before extraordinary items                           21.9        30.7
Extraordinary items                                            -        (1.2)
                                                          -------     -------
Net income                                                  21.9        29.5
                                                          =======     =======
Primary earnings per common share                              $           $
Income before extraordinary items                           0.13        0.22
Extraordinary items                                            -       (0.01)
                                                          -------     -------
Net income per common share                                 0.13        0.21
                                                          =======     =======
Fully diluted earnings per common share                        $           $
Income before extraordinary items                           0.13        0.21
Extraordinary items                                            -       (0.01)
                                                          -------     -------
Net income per common share                                 0.13        0.20
                                                          =======     =======
See notes to consolidated financial statements


                                     2
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Consolidated Balance Sheets (unaudited)
                                                         June 30   December 31
                                                          1997        1996
                                                           $m          $m

Assets
Current assets:
Cash and cash equivalents                                  482.1       215.9
Accounts receivable - net                                  283.2       210.7
Inventories                                                 47.4        39.2
Prepaid expenses and other current assets                   67.5       117.0
                                                         -------     -------
Total current assets                                       880.2       582.8

Property, plant and equipment - net                      1,572.3     1,513.6
Goodwill and other intangibles - net                       494.3       458.0
Long-term investments                                      106.5       100.6
Other long-term assets                                      69.9        75.4
                                                         -------     -------
Total assets                                             3,123.2     2,730.4
                                                         =======     =======
Liabilities and shareholders' equity
Current liabilities:
Short-term debt                                             60.0       209.2
Accounts payable                                           167.7       138.0
Deferred revenue                                           158.9       146.1
Other current liabilities                                  265.4       293.6
                                                         -------     -------
Total current liabilities                                  652.0       786.9

Long-term debt                                           1,065.8       910.1
Deferred income taxes                                      113.9        91.5
Other long-term liabilities                                171.2       182.1
                                                         -------     -------
Total liabilities                                        2,002.9     1,970.6
                                                         -------     -------
Shareholders' equity:
Common shares                                               15.8        14.1
Additional paid-in capital
   Share premium                                         1,193.2       882.5
   Contributed surplus                                   1,563.5     1,563.1
Treasury shares                                            (79.7)      (79.7)
Accumulated deficit                                     (1,540.3)   (1,598.8)
Cumulative currency translation adjustments                (32.2)      (21.4)
                                                         -------     -------
Total shareholders' equity                               1,120.3       759.8
                                                         -------     -------
Total liabilities and shareholders' equity               3,123.2     2,730.4
                                                         =======     =======
See notes to consolidated financial statements


                                     3
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Consolidated Statements of Cash Flows (unaudited)

Six months ended June 30                                    1997        1996
                                                             $m          $m
Cash flows from operating activities
Net income (loss)                                           56.9      (676.1)
Adjustments to reconcile net income (loss) to net cash
   provided by operating activities:
Charge for the impairment of long-lived assets                 -       744.7
Depreciation                                               103.7        99.0
Goodwill and other intangibles amortization                 11.6         8.9
Interest on ITS Vendor Note                                 (5.0)       (4.3)
Liquid Yield Option Notes discount amortization             10.6        10.0
Refinancing costs amortization                               2.0         1.8
Deferred income taxes                                       23.6         2.0
Extraordinary items                                            -         1.2
Gain on disposal of investment in associate                    -        (1.2)
Loss on currency transactions                                2.7         0.5
Other                                                       (1.8)        0.4
Changes in assets and liabilities                          (65.8)      (16.3)
                                                          -------     -------
Net cash provided by operating activities                  138.5       170.6
                                                          -------     -------
Cash flows from investing activities
Purchase of property, plant and equipment - net           (195.5)     (158.1)
Acquisition of businesses                                   (6.1)      (24.4)
Purchase of customer contracts                             (41.4)      (10.1)
Proceeds from litigation settlement                         77.5           -
Disposal of investment in and loans to associate               -        15.4
Purchase of other investments                               (3.0)       (3.8)
Disposal of other investments                                5.0         2.7
Other                                                       (0.8)       (1.1)
                                                          -------     -------
Net cash utilized by investing activities                 (164.3)     (179.4)
                                                          -------     -------
Cash flows from financing activities
Net (repayments) receipts of short-term debt              (164.1)       (3.3)
Repayments of long-term debt                                   -       (15.5)
Proceeds from long-term debt                               143.4         1.3
Purchase of senior subordinated notes                          -       (24.0)
Proceeds from issue of common shares                       312.3        15.9
Other                                                        0.5        (0.1)
                                                          -------     -------
Net cash provided (utilized) by financing activities       292.1       (25.7)
                                                          -------     -------
Effect of currency translation on cash and
   cash equivalents                                         (0.1)       (0.5)
                                                          -------     -------
Net increase (decrease) in cash and cash equivalents       266.2       (35.0)
Cash and cash equivalents at beginning of period           215.9       350.9
                                                          -------     -------
Cash and cash equivalents at end of period                 482.1       315.9
                                                          =======     =======

See notes to consolidated financial statements

                                     4
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited)

(i)     Basis of presentation

The accompanying unaudited interim consolidated financial statements
incorporate the financial statements of ADT Limited ("ADT") (since renamed
Tyco International Ltd.), a company incorporated in Bermuda, and its
subsidiaries (the "Company") and have been prepared in accordance with the
instructions to Form 10-Q and Rule 10-01 of Regulation S-X and in accordance
with generally accepted accounting principles in the United States.
Accordingly, these unaudited interim consolidated financial statements do not
include all of the disclosures required by generally accepted accounting
principles for annual consolidated financial statements.  In the opinion of
management, all adjustments considered necessary for fair presentation have
been included and all such adjustments are of a normal, recurring nature,
except that the financial year end of Automated Security (Holdings) PLC
("ASH") has now been aligned to that of the Company's and, accordingly, ASH's
consolidated results of operations for December 1996 of $0.9 million have been
charged to the accumulated deficit account and not to the consolidated
statements of income.  THE ACCOMPANYING UNAUDITED INTERIM CONSOLIDATED
FINANCIAL STATEMENTS OF ADT ARE PREPARED AND PRESENTED WITHOUT TAKING EFFECT
OF THE MERGER WITH TYCO INTERNATIONAL LTD. WHICH WAS CONSUMMATED AFTER THE
PERIOD END ON JULY 2, 1997 (NOTE (X)).  The preparation of consolidated
financial statements in accordance with generally accepted accounting
principles in the United States requires management to make extensive use of
estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date
of the consolidated financial statements and the reported amounts of revenues
and expenses during the reporting period.  Actual results could differ from
those estimates.  Certain figures at December 31, 1996 and for the three
months and six months ended June 30, 1996 have been reclassified to conform to
the 1997 presentation.  Results of operations for the three months and six
months ended June 30, 1997 are not necessarily indicative of the results that
may be expected for the full year ending December 31, 1997.  For further
information, see the Company's consolidated financial statements, including
the accounting policies and notes thereto, included in the Annual Report on
Form 10-K for the year ended December 31, 1996.  ADT is a holding company with
no independent business operations or assets other than its investment in its
subsidiaries, intercompany balances and holdings of cash and cash equivalents.
ADT's businesses are conducted through its subsidiaries.



                                     5
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(ii)    Business segments

Six months ended June 30                                    1997        1996
                                                             $m          $m

Net sales
Electronic security services                               747.0       683.8
Vehicle auction services                                   176.9       149.9
                                                           -----       -----
                                                           923.9       833.7
                                                           =====       =====
Operating income (loss)
Electronic security services                               129.8      (625.1)
Vehicle auction services                                    32.0        10.7
Corporate                                                  (47.5)      (12.6)
                                                           -----       -----
                                                           114.3      (627.0)
                                                           =====       =====

In the first quarter of 1996, electronic security services and vehicle auction
services operating income was stated after a charge for the impairment of
long-lived assets of $731.7 million and $13.0 million, respectively.

In the six months ended June 30, 1997, corporate expenses included $31.5
million related to professional and other transaction costs arising in
connection with the merger with Tyco International Ltd. and the offer
by and litigation with Western Resources, Inc.

Net sales and operating income (loss) of the electronic security services and
vehicle auction services divisions are discussed in Item 2.


                                     6
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

Three months ended June 30                                  1997        1996
                                                             $m          $m

Net sales
Electronic security services                               373.3       347.1
Vehicle auction services                                    89.9        75.3
                                                           -----       -----
                                                           463.2       422.4
                                                           =====       =====
Operating income
Electronic security services                                64.1        54.1
Vehicle auction services                                    16.6        12.9
Corporate                                                  (32.3)       (7.2)
                                                           -----       -----
                                                            48.4        59.8
                                                           =====       =====

In the second quarter of 1997, corporate expenses included $21.9 million
related to professional and other transaction costs arising in connection with
the merger with Tyco International Ltd. and the offer by and
litigation with Western Resources, Inc.

Net sales and operating income of the electronic security services and vehicle
auction services divisions are discussed in Item 2.


                                     7
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(iii)   Interest income and interest expense

Interest income and interest expense are discussed in Item 2.

(iv)    Other income less expenses

Other income less expenses for the six months ended June 30, 1996 included net
gains of $1.2 million relating to the disposal of investment in associate.

(v)     Extraordinary items

During the second quarter of 1996, the Company reacquired in the market
certain of its senior subordinated notes, which was financed from cash on
hand.  Extraordinary items comprised the loss arising on reacquisition of $0.8
million and the write off of net unamortized deferred refinancing costs of
$0.6 million relating to the early extinguishment of certain amounts
outstanding under the senior subordinated notes, and were stated net of
applicable income taxes of $0.2 million.

(vi)    Earnings (loss) per common share

The calculation of primary earnings (loss) per common share in the six months
ended June 30, 1997 was based on the weighted average of 155,978,929 (1996 -
136,451,264) common shares in issue during the period, which in 1996 did not
include common stock equivalents because their effect was anti-dilutive as a
consequence of the net loss for the period. Common stock equivalents included
in the weighted average number of common shares in issue during the six months
ended June 30, 1997 was 8,840,758.  Primary earnings (loss) per common share
was based on adjusted net income of $56.9 million (1996 - $676.3 million loss).

The calculation of primary earnings per common share in the three months ended
June 30, 1997 was based on the weighted average of 162,797,262 (1996 -
142,231,258) common shares in issue during the period.  Primary earnings per
common share was based on adjusted net income of $21.9 million (1996 - $29.4
million).

The calculation of fully diluted earnings per common share in the six months
ended June 30, 1997 was based on the weighted average of 180,465,800 common
shares in issue during the period and was based on adjusted net income of
$63.8 million.

The calculation of fully diluted earnings per common share in the three months
ended June 30, 1997 was based on the weighted average of 163,815,191 (1996 -
164,695,348) common shares in issue during the period and was based on
adjusted net income of $21.9 million (1996 - $32.7 million).

The Company will be required to adopt Statement of Financial Accounting
Standards No. 128 "Earnings per Share" ("SFAS 128") in the fourth quarter of
1997.  SFAS 128 specifies the revised computation, presentation


                                     8
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(vi)    Earnings (loss) per common share (continued)

and disclosure requirements for earnings per share and supersedes
Accounting Principles Board Opinion No. 15.  The impact that adoption of
SFAS 128 would have on primary (to be renamed basic) earnings per common
share and fully diluted (to be renamed diluted) earnings per common share
for the six months ended June 30, 1997 would be to revise such data to
$0.39 and $0.36, respectively.  There would be no impact on the comparable
earnings per common share for the six months ended June 30, 1996.  The
impact on primary and fully diluted earnings per common share for the three
months ended June 30, 1997 would be to revise such data to $0.14 and $0.13,
respectively (1996 - $0.21 and $0.20, respectively).

(vii)    Inventories
                                                         June 30   December 31
                                                           1997       1996
                                                            $m         $m

Raw materials and consumables                               12.0         8.6
Work in process                                             21.6        18.9
Finished goods                                              13.8        11.7
                                                            ----        ----
                                                            47.4        39.2
                                                            ====        ====
(viii)    Common shares
                                                       June 30     December 31
                                                         1997         1996
                                                     -----------   -----------
Number of common shares of $0.10 each:
Authorized                                           220,000,000   220,000,000
Issued and outstanding                               157,694,317   141,382,697

In July 1996, ADT granted to Republic Industries, Inc. ("Republic"), a warrant
to acquire 15 million common shares of ADT at an exercise price of $20 per
common share.  In March 1997 the warrant was exercised by Republic and ADT
received $300 million in cash.

(ix)    Contingencies

In December 1996, Westar Capital, Inc. ("WCI"), a wholly owned subsidiary of
Western Resources, Inc. and then a 27% shareholder of ADT, filed a complaint
(as subsequently amended) in the US Courts against ADT, certain of its current
and former directors, and one other.  The complaint alleges, among other
things, that ADT and its directors breached their fiduciary duties to WCI and
ADT's other shareholders (a) by adopting and amending the Shareholder Rights
Plan, and (b) by issuing to Republic a warrant.  The complaint seeks a court
order (a) directing ADT to redeem the Shareholder Rights Plan, and (b)
declaring the warrant issued to Republic null and void.  The complaint also
seeks unspecified damages, attorneys' fees and costs.


                                     9
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(ix)    Contingencies (continued)

Accordingly, an estimate of any potential loss or range of possible losses,
if any, cannot be made.  On July 11, 1997 ADT and WCI filed a joint motion
to stay the Florida proceedings.  ADT and its board of directors believe
that the allegations in WCI's complaint against ADT and its directors are
without merit and intend vigorously to defend against them.


(x)    Subsequent events

On July 2, 1997, a wholly owned subsidiary of ADT merged with Tyco
International Ltd. (the "Former Tyco").  Shareholders of ADT, through a
reverse stock split, received 0.48133 shares of ADT's common stock for each
share of ADT common stock outstanding, and the Former Tyco shareholders
received one share of ADT's common stock for each share of the Former Tyco
common stock outstanding (approximately 168.4 million common shares were
issued to the Former Tyco shareholders).

The transaction qualifies for pooling of interests accounting treatment, which
is intended to present as a single interest, common shareholder interests
which were previously independent.  Supplemental historical consolidated
financial statements have been prepared accounting for the merger using the
pooling of interests method of accounting and filed under a Current Report on
Form 8-K on July 10, 1997, to which reference should be made.

Upon consummation of the merger, ADT  (the surviving corporation) changed its
name to Tyco International Ltd.

On July 2, 1997, shareholders of ADT approved the consolidation and division
of the common shares of $0.10 each in the capital of ADT into new common
shares of $0.20 each, and also approved an increase in the authorized number
of common shares of $0.20 each to 750,000,000.


                                    10
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(x)    Subsequent events (continued)

In July 1997, the board of directors of the Company determined that an
additional 5 million (making 7.5 million in total) of the Company's
convertible cumulative redeemable preference shares of $1 each be
classified as Series A First Preference Shares and reserved for issuance
upon exercise of Series A First Preference Share Purchase Rights, pursuant
to the Shareholder Rights Plan.

In July 1997, the Company tendered for its $250.0 million senior notes and its
$294.1 million senior subordinated notes.  As a result, 96.2 per cent of the
senior notes and 95.2 per cent of the senior subordinated notes were tendered.
The Company paid an aggregate amount of $551.9 million, including premium, to
the note holders, which was financed by a new bank credit agreement entered
into by a then affiliate of the Company and which was guaranteed by ADT.



                                    11
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc.

ADT Operations, Inc., a company incorporated in the State of Delaware, United
States, is an indirect wholly owned subsidiary of ADT.  ADT Operations, Inc.
is a holding company that, through its subsidiaries, conducts a substantial
proportion of the Company's electronic security services businesses in the
United States and all of the Company's vehicle auction services businesses in
the United States.  ADT Operations, Inc. has no independent business
operations or assets other than its investment in its subsidiaries,
intercompany balances and holdings of cash and cash equivalents.

Consolidated statements of income

Six months ended June 30                                    1997        1996
                                                             $m          $m

Net sales                                                  686.0       593.1
Cost of sales                                             (331.9)     (291.6)
Selling, general and administrative expenses              (229.2)     (202.6)
Charge for the impairment of long-lived assets                 -      (316.4)
                                                           -----       -----
Operating income (loss)                                    124.9      (217.5)
Interest income - affiliates                                 1.1           -
Interest income - non-affiliates                             0.4         1.5
Interest expense - affiliates                              (43.2)      (15.5)
Interest expense - non-affiliates                          (39.0)      (37.4)
Other expenses less income                                  (1.8)       23.7
                                                           -----       -----
Income (loss) before income taxes                           42.4      (245.2)
Income taxes                                               (14.9)      (14.1)
                                                           -----       -----
Income (loss) before extraordinary items                    27.5      (259.3)
Extraordinary items                                            -        (0.4)
                                                           -----       -----
Net income (loss)                                           27.5      (259.7)
                                                           =====       =====


                                    12
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

Consolidated statements of income

Three months ended June 30                                  1997       1996
                                                             $m         $m

Net sales                                                  346.8       297.7
Cost of sales                                             (164.9)     (145.4)
Selling, general and administrative expenses              (117.8)     (103.5)
                                                           -----       -----
Operating income                                            64.1        48.8
Interest income - non-affiliates                             0.1         0.9
Interest expense - affiliates                              (21.9)       (8.0)
Interest expense - non-affiliates                          (18.7)      (18.5)
Other expenses less income                                  (1.7)       (2.0)
                                                           -----       -----
Income before income taxes                                  21.9        21.2
Income taxes                                                (7.7)       (7.5)
                                                           -----       -----
Income before extraordinary items                           14.2        13.7
Extraordinary items                                            -        (0.4)
                                                           -----       -----
Net income                                                  14.2        13.3
                                                           =====       =====


                                    13
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

Consolidated balance sheets
                                                         June 30   December 31
                                                           1997       1996
                                                            $m         $m
Current assets:
Cash and cash equivalents                                   61.2        82.9
Accounts receivable - net - affiliates                      26.3        44.4
Accounts receivable - net - non-affiliates                 219.4       149.4
Inventories                                                 27.6        21.6
Prepaid expenses and other current assets                   54.5        22.9
                                                         -------     -------
Total current assets                                       389.0       321.2

Property, plant and equipment - net                      1,194.5     1,131.3
Goodwill and other intangibles - net                       352.1       351.1
Long-term notes receivable - affiliates                        -        51.3
Other long-term assets                                      29.3        31.2
                                                         -------     -------
Total assets                                             1,964.9     1,886.1
                                                         =======     =======
Liabilities and shareholder's equity
Current liabilities:
Short-term debt - non-affiliates                            53.8       129.8
Accounts payable - affiliates                               11.5        14.5
Accounts payable - non-affiliates                          147.1        91.8
Deferred revenue                                            74.9        72.4
Other current liabilities - non-affiliates                 126.0       143.5
                                                         -------     -------
Total current liabilities                                  413.3       452.0

Long-term debt - affiliates                                690.6       690.1
Long-term debt - non-affiliates                            887.4       877.2
Deferred income taxes                                       92.2        78.9
Other long-term liabilities - affiliates                   110.8       117.4
Other long-term liabilities - non-affiliates               120.5       119.4
                                                         -------     -------
Total liabilities                                        2,314.8     2,335.0
                                                         -------     -------
Shareholder's equity:
Common shares                                                  -           -
Contributed surplus                                        930.0       858.5
Accumulated deficit                                     (1,279.9)   (1,307.4)
                                                         -------     -------
Total shareholder's equity                                (349.9)     (448.9)
                                                         -------     -------
Total liabilities and shareholder's equity               1,964.9     1,886.1
                                                         =======     =======

                                    14
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

Consolidated statements of cash flows

Six months ended June 30                                    1997       1996
                                                             $m         $m
Cash flows from operating activities
Net income (loss)                                           27.5      (259.7)
Adjustments to reconcile net income (loss) to net cash
   provided by operating activities:
Charge for the impairment of long-lived assets                 -       316.4
Depreciation                                                71.5        69.0
Goodwill and other intangibles amortization                  5.9         5.6
Interest on long-term notes receivable - affiliates         (1.0)          -
Liquid Yield Option Notes discount amortization             10.6        10.0
Refinancing costs amortization                               1.9         1.6
Deferred income taxes                                       13.3        12.4
Extraordinary items                                            -         0.4
Gain on customer contract transactions - affiliates            -       (26.8)
Other                                                       (0.4)       (0.4)

Changes in assets and liabilities                          (42.3)        7.3
                                                           -----       -----
Net cash provided by operating activities                   87.0       135.8
                                                           -----       -----
Cash flows from investing activities
Purchase of property, plant and equipment - net           (143.9)     (125.5)
Short-term notes receivable - affiliates                     8.0           -
Long-term notes receivable - affiliates                     52.3           -
Acquisition of businesses from non-affiliates               (6.1)      (24.4)
Purchase of customer contracts                              (0.4)       (4.0)
Disposal of assets to affiliates                               -        73.5
Other                                                       (0.5)       (0.8)
                                                           ------      -----
Net cash utilized by investing activities                  (90.6)      (81.2)
                                                           -----       -----
Cash flows from financing activities
Net (repayments) receipts of short-term debt -
    non-affiliates                                         (88.5)       (2.6)
Proceeds from long-term debt - affiliates                      -        31.5
Repayments of long-term debt - non-affiliates                  -       (15.0)
Capital contributions from parent                           71.5           -
Other                                                       (1.1)          -
                                                           -----       -----
Net cash (utilized) provided by financing activities       (18.1)       13.9
                                                           -----       -----
Net (decrease) increase in cash and cash equivalents       (21.7)       68.5
Cash and cash equivalents at beginning of period            82.9        54.0
                                                           -----       -----
Cash and cash equivalents at end of period                  61.2       122.5
                                                           =====       =====
                                    15
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

Business segments

Six months ended June 30                                    1997        1996
                                                             $m          $m

Net sales
Electronic security services                               509.1       443.2
Vehicle auction services                                   176.9       149.9
                                                           -----       -----
                                                           686.0       593.1
                                                           =====       =====
Operating income (loss)
Electronic security services                                93.4      (227.2)
Vehicle auction services                                    32.0        10.7
Corporate                                                   (0.5)       (1.0)
                                                           -----       -----
                                                           124.9      (217.5)
                                                           =====       =====

In the first quarter of 1996, electronic security services and vehicle auction
services operating income was stated after a charge for the impairment of
long-lived assets of $303.4 million and $13.0 million, respectively.

Three months ended June 30                                  1997        1996
                                                             $m          $m

Net sales
Electronic security services                               256.9       222.4
Vehicle auction services                                    89.9        75.3
                                                           -----       -----
                                                           346.8       297.7
                                                           =====       =====
Operating income
Electronic security services                                47.9        36.8
Vehicle auction services                                    16.6        12.9
Corporate                                                   (0.4)       (0.9)
                                                           -----       -----
                                                            64.1        48.8
                                                           =====       =====
                                    16
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

                                                         June 30   December 31
                                                           1997       1996
                                                            $m         $m

Inventories
Raw materials and consumables                                9.4         6.0
Work in process                                             12.5        11.4
Finished goods                                               5.7         4.2
                                                            ----        ----
                                                            27.6        21.6
                                                            ====        ====

Long-term debt - non-affiliates
Under the terms of the indenture governing the ADT Operations, Inc. senior
subordinated notes a payment blockage prevents ADT Operations, Inc. and its
guarantor subsidiaries and ADT from making any payment of principal, interest
or premium on the senior subordinated notes and from purchasing, redeeming or
otherwise acquiring any senior subordinated notes during the continuance of
any payment blockage period.  No payment blockage is currently in effect.

At June 30, 1997, ADT Operations, Inc. had $81.0 million of Senior
Indebtedness related to letters of credit issued under the terms of the
revolving bank credit agreement and $250.0 million of Senior Indebtedness
related to the Senior Notes, (in each case as defined in the Senior
Subordinated Note Indenture).

At June 30, 1997, ADT had $141.5 million of Guarantor Senior Indebtedness (as
defined in the Senior Note Indenture, but excluding Indebtedness in respect of
guarantees issued by ADT of debt of ADT Operations, Inc. or its subsidiaries).
At June 30, 1997, the subsidiary guarantors had $60.2 million of Guarantor
Senior Indebtedness (as defined in the Senior Note Indenture), in each case
ranking pari passu in right of payment with the Senior Note Guarantees.

All of the subsidiary guarantors under the senior notes and the revolving bank
credit agreement are direct or indirect, wholly owned subsidiaries of ADT
Operations, Inc.  Separate financial statements and other disclosures for the
subsidiary guarantors are not included herein because the subsidiary
guarantors have guaranteed the senior notes on a joint and several basis, the
aggregate assets, liabilities, earnings and equity of the subsidiary
guarantors are substantially equivalent to the assets, liabilities, earnings
and equity of ADT Operations, Inc. on a consolidated basis and such separate
financial statements and other disclosures are not considered material to
investors.


                                    17
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 1.  CONSOLIDATED FINANCIAL STATEMENTS (continued)

Notes to Consolidated Financial Statements (unaudited) (continued)

(xi)    ADT Operations, Inc. (continued)

                                                         June 30   December 31
                                                           1997       1996

Common shares
Number of common shares of $0.10 each:
Authorized                                                10,000      10,000
Issued and outstanding                                     1,820       1,820




                                    18
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS

Results of operations

The following discussion of results of operations addresses net sales,
operating income (loss) and certain other line items in the consolidated
financial statements.

Net sales

Six months ended June 30                                    1997        1996
                                                             $m          $m

Electronic security services                               747.0       683.8
Vehicle auction services                                   176.9       149.9
                                                           -----       -----
Net sales                                                  923.9       833.7
                                                           =====       =====

Operating income (loss) and income (loss) before income taxes

Six months ended June 30                                    1997        1996
                                                             $m          $m

Electronic security services                               129.8      (625.1)
Vehicle auction services                                    32.0        10.7
Corporate expenses                                         (47.5)      (12.6)
                                                           -----       -----
Operating income (loss)                                    114.3      (627.0)
                                                           -----       -----
Interest income                                             13.3        12.8
Interest expense                                           (43.1)      (54.1)
Other expenses less income                                  (0.2)        0.7
                                                           -----       -----
Income (loss) before income taxes                           84.3      (667.6)
                                                           =====       =====
Charge for the impairment of long-lived assets                 -       744.7
Depreciation and amortization                              115.3       107.9
Capital expenditures                                       198.0       160.2

Corporate expenses and other expenses less income are discussed in Item 1.



                                    19
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

Net sales

Three months ended June 30                                  1997        1996
                                                             $m          $m

Electronic security services                               373.3       347.1
Vehicle auction services                                    89.9        75.3
                                                           -----       -----
Net sales                                                  463.2       422.4
                                                           =====       =====
Operating income and income before income taxes

Three months ended June 30                                  1997        1996
                                                             $m          $m

Electronic security services                                64.1        54.1
Vehicle auction services                                    16.6        12.9
Corporate expenses                                         (32.3)       (7.2)
                                                           -----       -----
Operating income                                            48.4        59.8
                                                           -----       -----
Interest income                                              8.6         6.3
Interest expense                                           (21.7)      (26.7)
Other expenses less income                                  (0.2)        1.0
                                                           -----       -----
Income before income taxes                                  35.1        40.4
                                                           =====       =====
Depreciation and amortization                               57.5        55.0
Capital expenditures                                        96.4        83.6

Corporate expenses and other expenses less income are discussed in Item 1.



                                    20
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

Electronic Security Services - Results of operations

Six months ended June 30, 1997 compared with six months ended June 30, 1996

Net sales of the division, which represented approximately 81 per cent of the
Company's consolidated net sales, increased 9.2 per cent in 1997 to $747.0
million from $683.8 million in 1996.  This sales increase was attributable to
an increase of $50.6 million in the sales of the North American operations and
a $12.6 million increase in the sales of the European operations.  In North
America the increase in sales was due to increased recurring monitoring and
maintenance revenues arising from a larger base of residential security
systems and a solid improvement in outright sales and installation revenues in
the commercial sector.  Approximately 177,000 new residential security systems
were installed in 1997 compared with approximately 129,000 systems in 1996.
However, due to price competition in the market place, residential
installation revenues showed a modest decline in 1997 compared with 1996.
Growth in recurring revenues in the commercial sector in the United States
showed a solid improvement.  In Europe the increase in sales was principally
due to a significant improvement in revenue from outright sales in the
commercial sector.

Operating results of the division increased to $129.8 million income in 1997
from a $625.1 million loss in 1996, due to a charge for the impairment of
long-lived assets of $731.7 million in the first quarter of 1996.

Operating income of the division before the charge for the impairment of
long-lived assets increased 21.8 per cent in 1997 to $129.8 million from
$106.6 million in 1996.  Operating income before the charge for the impairment
of long-lived assets as a percentage of net sales ("operating margin")
increased to 17.4 per cent in 1997 from 15.6 per cent in 1996.  The increase
in operating income before the charge for the impairment of long-lived assets
and the increase in operating margin reflected the continuing success of the
residential security system sales program, which has achieved further advances
in recurring revenues in 1997, and an improvement in outright sales in the
commercial sector.  However, this improvement has been offset by continued
price competition which has caused the contribution from residential
installation revenue and residential outright sales to remain flat.  In Europe
operating income increased due to the margins on improved sales.

Three months ended June 30, 1997 compared with three months ended June 30, 1996

Net sales of the division, which represented approximately 81 per cent of the
Company's consolidated net sales, increased 7.5 per cent in 1997 to $373.3
million from $347.1 million in 1996.  This sales increase was principally
attributable to an increase of $26.9 million in the sales of the North
American operations.  In North America the increase in sales was due to
increased recurring monitoring and maintenance revenues arising from a larger
base of residential security systems and a solid improvement in outright sales
and installation revenues in the commercial sector.  Approximately 89,000 new
residential security systems were installed in 1997 compared with
approximately 69,000 systems in 1996.  However, due to price competition in
the market place, residential installation revenues showed a modest decline in
1997 compared with 1996.  Growth in recurring revenues in the commercial
sector in the United States showed a solid improvement.



                                    21
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

Operating income of the division increased 18.5 per cent in 1997 to $64.1
million from $54.1 million in 1996.  Operating margin increased to 17.2 per
cent in 1997 from 15.6 per cent in 1996.  The increase in operating income and
the increase in operating margin reflected the continuing success of the
residential security system sales program, which has achieved further advances
in recurring revenues in 1997, and an improvement in outright sales in the
commercial sector.  However, this improvement has been offset by continued
price competition which has caused the contribution from residential
installation revenue and residential outright sales to remain flat.  In
Europe, operating income showed a small decline due to a change in business
mix.



                                    22
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

Vehicle Auction Services - Results of operations

Six months ended June 30, 1997 compared with six months ended June 30, 1996

Net sales of the division, which represented approximately 19 per cent of the
Company's consolidated net sales, increased 18.0 per cent in 1997 to $176.9
million from $149.9 million in 1996.  The volume of vehicles sold increased by
approximately 14 per cent which was principally due to increases in the volume
of vehicles sold for fleet lease customers and vehicle manufacturers of
approximately 25 per cent each.

Operating income of the division increased to $32.0 million in 1997 from
$10.7 million in 1996. $13 million of the increase was due to a charge for
the impairment of long-lived assets in the first quarter of 1996.

Operating income of the division before the charge for the impairment of
long-lived assets increased 35.0 per cent in 1997 to $32.0 million from $23.7
million in 1996.  Operating margin increased to 18.1 per cent in 1997 from
15.8 per cent in 1996.  The increase in operating income and operating margin
were due principally to the significant increase in volume of vehicles sold.
The ratio of vehicles sold to vehicles entered for sale increased to 61.0 per
cent in 1997 from 58.4 per cent in 1996, which was due to a higher proportion
of vehicles entered for sale by fleet lease customers.

Three months ended June 30, 1997 compared with three months ended June 30, 1996

Net sales of the division, which represented approximately 19 per cent of the
Company's consolidated net sales, increased 19.4 per cent in 1997 to $89.9
million from $75.3 million in 1996.  The volume of vehicles sold increased by
approximately 15 per cent which was principally due to increases in the volume
of vehicles sold for fleet lease customers and vehicle manufacturers of
approximately 24 per cent and approximately 33 per cent, respectively.

Operating income of the division increased 28.7 per cent in 1997 to $16.6
million from $12.9 million in 1996.  Operating margin increased to 18.5 per
cent in 1997 from 17.1 per cent in 1996.  The increase in operating income and
operating margin were due principally to the significant increase in volume of
vehicles sold.  The ratio of vehicles sold to vehicles entered for sale
increased to 59.4 per cent in 1997 from 56.7 per cent in 1996, which was due
to a higher proportion of vehicles entered for sale by fleet lease customers.

Corporate Expense

Corporate expense, included in selling, general and administrative expenses,
increased to $47.5 million in the six months ended June 30, 1997 from $12.6
million in the six months ended June 30, 1996 primarily due to $31.5
million related to professional and other transaction costs arising in
connection with the merger with Tyco International Ltd. and the offer by
and litigation with Western Resources, Inc.

                                    23
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

Corporate expense increased to $32.3 million in the second quarter of 1997
from $7.2 million in the second quarter of 1996 primarily due to $21.9
million related to the professional and transaction costs described above.

Interest income and interest expense

Interest income increased to $13.3 million in the six months ended June 30,
1997 from $12.8 million in the six months ended June 30, 1996, partly due to
the increase in the average level of cash deposits held by the Company in
1997.  During the six months ended June 30, 1997 interest income included $5.0
million (1996 - $4.3 million) relating to the ITS Vendor Note.

Interest expense declined from $54.1 million in the six months ended June
30, 1996 to $43.1 million in the six months ended June 30, 1997,
principally due to the repayments by the Company during the latter part of
1996 of long-term debt owed by the ASH group.  During the six months ended
June 30, 1997 interest expense included $10.6 million (1996 - $10.0
million) relating to Liquid Yield Option Notes discount amortization.

Interest income increased to $8.6 million in the second quarter of 1997 from
$6.3 million in the second quarter of 1996, partly due to the increase in the
average level of cash deposits held by the Company in 1997.  During the second
quarter of 1997 interest income included $2.5 million (1996 - $2.2 million)
relating to the ITS Vendor Note.

Interest expense declined from $26.7 million in the second quarter of 1996 to
$21.7 million in the second quarter of 1997, principally due to the repayments
by the Company during the latter part of 1996 of long-term debt owed by the
ASH group.  During the second quarter of 1997 interest expense included $5.3
million (1996 - $5.0 million) relating to Liquid Yield Option Notes discount
amortization.

Liquidity and capital resources

The net increase in cash and cash equivalents amounted to $266.2 million,
after the negative effect of currency translation on cash and cash equivalents
of $0.1 million.  Net cash of $138.5 million provided by operating activities
and $292.1 million provided by financing activities was offset by net cash
utilized by investing activities of $164.3 million.

Net cash provided by operating activities of $138.5 million principally
included cash provided by the Company's electronic security services and
vehicle auction services divisions less other expenses and  adjusted for the
net increase in working capital.  Within the net increase of $65.8 million in
working capital, increases in accounts receivable of $72.0 million and other
assets of $25.8 million were offset by a net increase in liabilities of $32.0
million, principally relating to increases in accounts payable and deferred
revenue and a decrease in other liabilities.  The movements in accounts
receivable and accounts payable were principally due to the timing of cash
receipts and payments in the vehicle auction business in respect of vehicle
sales which took place in the latter part of June 1997, together with an
increase in accounts receivable in the electronic security services division.
<PAGE>
The movement in deferred revenue was principally due to the timing of billings
within the electronic security services division.

Net cash utilized by investing activities of $164.3 million was principally
due to capital expenditures of $180.5 million and $15.6 million in the
electronic security services and vehicle auction services divisions,
respectively, $41.4 million relating to the purchase of customer contracts to
provide electronic security monitoring and $6.1 million relating to the
acquisition of an electronic security services business in the United States.
These were principally offset by the receipt of $77.5 million of litigation
settlement proceeds.

Net cash provided by financing activities of $292.1 million was principally
due to proceeds of $143.4 million from long-term debt and $312.3 million of
proceeds from the issue of common shares, including $300.0 million relating to
the Republic warrant, which was principally offset by net repayments of $164.1
million of short-term debt.


                                    24
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
        AND RESULTS OF OPERATIONS (continued)

The Company believes that the working capital at June 30, 1997, its available
credit facilities and the current cash flows from operations are adequate for
the Company's normal growth and operating needs, the funding of its capital
expenditures and the current servicing of its debt requirements.

Forward looking information

Certain statements in this Form 10-Q constitute "forward looking statements"
within the meaning of the Private Securities Litigation Reform Act of 1995.
In particular any statements contained herein regarding the consummation and
benefits of future acquisitions, as well as expectations with respect to
future sales, operating efficiencies and product expansion, are subject to
known and unknown risks, uncertainties and contingencies, many of which are
beyond the control of the Company, which may cause actual results, performance
or achievements to differ materially from anticipated results, performance or
achievements.  Factors that might affect such forward looking statements
included, among others, overall economic and business conditions, the demand
for the Company's services, competitive factors in the industry, regulatory
approvals and the uncertainty of consummation of future acquisitions.



                                    25
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

PART II OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Reference is made to Item 1, Legal Proceedings, in the Company's Quarterly
Report on Form 10-Q for the period ended March 31, 1997, for a description
of existing litigation against the Company.  The following description
supplements the information contained in the Form 10-Q:

On June 10, 1997, Westar Capital, Inc.  ("WCI") withdrew its motions for
preliminary injunctions originally filed on January 23, 1997, and March 24,
1997.  On or about June 13, 1997, these injunction motions were denied by
the Court as being moot due to their withdrawal.  On July 11, 1997, ADT's
motion to dismiss the Fourth Amended Complaint was denied by the Court.  On
the same date, ADT and WCI filed a joint motion to stay the Florida
proceedings.

On June 25, 1997, the Court dismissed the claims of ADT Operations, Inc.
("ADT Operations") against The Chase Manhattan Bank, N.A.  ("Chase") which
had alleged breaches of fiduciary duties by Chase.  The remainder of the
action, including claims that Chase misused confidential information,
were discontinued without prejudice by the parties on July 9, 1997.

On May 29, 1997 WCI applied to the Supreme Court of Bermuda (the "Bermuda
Court") to amend its petition by adding claims that certain actions by the
ADT's board of directors were in breach of the board members' fiduciary
duties and damaging to the interests of ADT and ADT's shareholders
including WCI, and seeking, in the alternative to the request for an order
from the Bermuda Court to enjoin the merger of ADT and the Former Tyco (the
"Merger"), an order that ADT must offer to purchase, in cash, the Common
Shares owned by WCI at a price equal to the consideration provided for in
the Merger or, if higher, at their fair value as assessed by the Bermuda
Court.  WCI's application to amend its petition was heard on June 12 and
13, 1997.  At the hearing, WCI was given permission to amend its petition.

On June 4, 1997, ADT was issued notice that Crandon Capital Partners
voluntarily dismissed its action without prejudice.

The Company has been informed by counsel acting for Mr.  C.  Gachot that
his action filed in the US Courts against ADT and certain of its directors,
among others, will not be pursued further.

On August 14, 1997, the Company and Western entered into an agreement to
dismiss or discontinue all outstanding litigation between the Company and
Western or their respective subsidiaries.

                                    26
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

(a)     Exhibits

10.1    First Supplemental Indenture to the Indenture, dated as of August 4,
        1993, among ADT Operations, Inc., the Guarantors Named Therein and The
        Chase Manhattan Bank, as Trustee, dated as of July 1, 1997, in respect
        of the $250,000,000 8-1/4% Senior Notes due 2000.

10.2    Amended and Restated Indenture dated as of July 2, 1997, in respect of
        the $250,000,000 8-1/4% Senior Notes due 2000.

10.3    First Supplemental Indenture to the Indenture, dated as of August 4,
        1993, among ADT Operations, Inc., ADT Limited, as Guarantor, and The
        Bank of New York, as Trustee, date as of July 1, 1997, in respect of
        the $350,000,000 9-1/4% Senior Subordinated Notes due 2003.

10.4    Amended and Restated Indenture dated as of July 2, 1997, in respect of
        the $350,000,000 9-1/4% Senior Subordinated Notes due 2003.

10.5    Credit Agreement Amendment No. 1 and Consent, dated as of June 27,
        1997, among ADT Operations, Inc., The Bank of Nova Scotia and the
        Lenders named therein amending the Credit Agreement, dated as of
        January 9, 1997 and as amended and restated as of April 14, 1997.

10.6    ADT Limited Guaranty Waiver and Consent, dated as of June 27, 1997
        between ADT Limited and The Bank of Nova Scotia waiving certain
        provisions of the Guaranty given by ADT Limited dated as of January 9,
        1997.

10.7    ADT Limited Guaranty Waiver and Consent No. 2 dated as of June 27,
        1997, between ADT Limited and The Bank of Nova Scotia waiving
        certain provisions of the Guaranty given by ADT Limited dated as of
        January 9, 1997.

10.8    Facility Agreement Amendment No. 1 and Waiver, dated as of June 30,
        1997.

11.1    Statement regarding the computation of earnings per common share.

27      Financial Data Schedule (for SEC use only).

(b)     A Current Report on Form 8-K was filed by Tyco International Ltd.
        (formerly named ADT Limited) on July 10, 1997 regarding the merger
        with ADT Limited which was consummated on July 2, 1997.

SIGNATURE

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.



                           ADT LIMITED (since renamed TYCO INTERNATIONAL LTD.)


                           /s/ Mark H. Swartz
August 14, 1997            ---------------------------------------
                               Mark H. Swartz

                           Executive Vice President and Chief Financial Officer
                           (Principal Financial Officer and Principal
                           Accounting Officer)


                                    27
<PAGE>
                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

                     INDEX TO EXHIBITS TO QUARTERLY REPORT
                                 ON FORM 10-Q
                           FOR THE QUARTERLY PERIOD
                              ENDED JUNE 30, 1997
Exhibit

10.1    First Supplemental Indenture to the Indenture, dated as of August 4,
        1993, among ADT Operations, Inc., the Guarantors Named Therein and
        The Chase Manhattan Bank, as Trustee, dated as of July 1, 1997, in
        respect of the $250,000,000 8-1/4% Senior Notes due 2000.

10.2    Amended and Restated Indenture dated as of July 2, 1997, in respect of
        the $250,000,000 8-1/4% Senior Notes due 2000.

10.3    First Supplemental Indenture to the Indenture, dated as of August 4,
        1993, among ADT Operations, Inc., ADT Limited, as Guarantor, and
        The Bank of New York, as Trustee, date as of July 1, 1997, in
        respect of the $350,000,000 9-1/4% Senior Subordinated Notes due
        2003.

10.4    Amended and Restated Indenture dated as of July 2, 1997, in respect
        of the $350,000,000 9-1/4% Senior Subordinated Notes due 2003.

10.5    Credit Agreement Amendment No. 1 and Consent, dated as of June 27,
        1997, among ADT Operations, Inc., The Bank of Nova Scotia and the
        Lenders named therein amending the Credit Agreement, dated as of
        January 9, 1997 and as amended and restated as of April 14, 1997.

10.6    ADT Limited Guaranty Waiver and Consent, dated as of June 27, 1997
        between ADT Limited and The Bank of Nova Scotia waiving certain
        provisions of the Guaranty given by ADT Limited dated as of January 9,
        1997.

10.7    ADT Limited Guaranty Waiver and Consent No. 2 dated as of June 27,
        1997, between ADT Limited and The Bank of Nova Scotia waiving
        certain provisions of the Guaranty given by ADT Limited dated as of
        January 9, 1997.

10.8    Facility Agreement Amendment No. 1 and Waiver, dated as of June 30,
        1997.

11.1    Statement regarding the computation of earnings per common share.

27      Financial Data Schedule (for SEC use only).

<PAGE>


                                                                  EXHIBIT 10.1
==============================================================================

                           ADT OPERATIONS, INC.
                                as Issuer,
                                   AND
                               ADT LIMITED,
                        ADT GENERAL HOLDINGS, INC.,
                        ADT SECURITY SERVICES, INC.
                     ADT SECURITY SYSTEMS WEST, INC.,
                      ADT AUTOMOTIVE HOLDINGS, INC.,
                           ADT AUTOMOTIVE, INC.,
                        AA PROPERTY HOLDINGS, INC.,
                          ADT INVESTMENTS, INC.,
                        AAAA DEALERS SERVICES INC.,
                       ADT BUSINESS HOLDINGS, INC.,
                       ADT PROPERTY HOLDINGS, INC.,
                ADT SECURITY SYSTEMS, MANUFACTURING, INC.,
                       MID-ATLANTIC SECURITY, INC.,
                      ADT AUTOMOTIVE SERVICES, INC.,
                         AUCTION TRANSPORT, INC.,
                        BRITISH CAR AUCTIONS, INC.,
                         CCTC INTERNATIONAL, INC.,
                       ADT SPECIALTY AUCTIONS, INC.,
                             FLYING LION, INC.
                                   AND
                       TRI-CITY AUTO AUCTION, INC.,
                              as Guarantors,
                                   AND
                         THE CHASE MANHATTAN BANK
                                as Trustee
                              _______________

                       First Supplemental Indenture
            to the Indenture, dated as of August 4, 1993, among
          ADT Operations, Inc., the Guarantors Named Therein and
                   The Chase Manhattan Bank, as Trustee,
                         dated as of July 1, 1997
                              _______________

                               $250,000,000
                       8 1/4% Senior Notes due 2000

==============================================================================

               FIRST SUPPLEMENTAL INDENTURE, dated as of July 1, 1997 between
ADT OPERATIONS, INC., a Delaware corporation, as Issuer (the "Company"), the
Guarantors (as defined below) and THE CHASE MANHATTAN BANK, as trustee (the
"Trustee").


                          RECITALS OF THE COMPANY AND THE GUARANTORS

               The Company executed and delivered an Indenture dated as of
August 4, 1993 (the "Indenture") between the Company, the Guarantors Named
Therein (the "Guarantors") and the Trustee pursuant to which $250,000,000 of
the Company's 8 1/4% Senior Notes due 2000 (the "Notes") was issued.

               ADT Limited, the indirect parent of the Company,  has entered
into an Agreement and Plan of Merger dated as of March 17, 1997 among ADT
Limited, Limited Apache, Inc. ("Merger Sub"), a wholly owned subsidiary of ADT
Limited and a Massachusetts corporation, and Tyco International Ltd.("Tyco"), a
Massachusetts corporation, pursuant to which Merger Sub will be merged with
and into Tyco (the "Merger").

               Sections 902 and 1021 of the Indenture provide that the
Indenture may be amended with the consent of the Holders of a majority in
principal amount of the Outstanding Notes.

               The Company and ADT Limited wish to amend the Indenture as set
forth below, and the required Holders of the Notes have consented to the
execution of this First Supplemental Indenture pursuant to the consent
solicitation made by the Company through the Offer to Purchase and Consent
Solicitation dated June 4, 1997.

               All other conditions and requirements necessary to make this
First Supplemental Indenture a valid and binding instrument in accordance with
its terms have been satisfied.

               NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

               For and in consideration of the premises, the prior purchase of
the Notes by the Holders thereof and the receipt of consideration pursuant to
a simultaneous tender offer and consent solicitation by the Company for the
securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Notes, as follows:


                                   ARTICLE 1
            Definitions and Other Provisions of General Application

               SECTION 101.  Capitalized Terms.  For all purposes of this First
Supplemental Indenture, except as otherwise expressly provided or unless the
context otherwise requires, capitalized terms used and not defined herein shall
have the meanings assigned in the Indenture.

               SECTION 102.  Effectiveness.   This First Supplemental
Indenture shall become effective, and shall bind the parties hereto, upon its
execution by the Company, the Guarantors and the Trustee.

      Notwithstanding the foregoing, the amendments to the Indenture contained
in Article Two hereof (the "Amendments") shall not become operative, and shall
not be binding on the Company, the Guarantors or the Trustee, until delivery
by the Company to the Trustee of an Officers' Certificate certifying that the
Merger has been consummated and that the Notes have been accepted for purchase
by the Company.  In the event that the Merger is not consummated or the Notes
are not accepted for purchase by the Company, the Amendments shall not become
operative and shall not bind the Company, any Guarantor or the Trustee and
this First Supplemental Indenture shall lapse automatically and be of no
further force or effect.  Upon such termination, the Company shall deliver to
the Trustee an Officers' Certificate certifying that the Merger has not been
consummated and/or that the Notes have not been accepted for purchase by the
Company, as the case may be.

               SECTION 103.  Incorporation of First Supplemental Indenture into
Indenture.  This First Supplemental Indenture is executed by the Company, the
Guarantors and the Trustee pursuant to the provisions of Section 902 of the
Indenture, and the terms and conditions hereof shall be deemed to be part of
the Indenture for all purposes upon effectiveness of this First Supplemental
Indenture and every Holder of Notes theretofore or thereafter authenticated
and delivered under the Indenture shall be bound hereby.  The Indenture as
supplemented by this First Supplemental Indenture is hereby in all respects
ratified and confirmed.

               SECTION 104.  Effect of Headings.  The Article and Section
headings herein are for convenience only and shall not affect the construction
hereof.

               SECTION 105.  Governing Law.  This First Supplemental Indenture
shall be governed by and construed in accordance with the law of the State of
New York.  This First Supplemental Indenture is subject to the provisions of
the Trust Indenture Act that are required to be part of this Indenture and
shall, to the extent applicable, be governed by such provisions.

               SECTION 106.  Counterparts.  This First Supplemental Indenture
may be executed in any number of counterparts, each of which so executed shall
be deemed to be an original, but all such counterparts shall together
constitute but one and the same instrument.

               SECTION 107.  Recitals.  The recitals contained herein shall be
taken as the statements of the Company and each Guarantor, and the Trustee
assumes no responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this First Supplemental
Indenture except that the Trustee represents that it is duly authorized to
execute and deliver this First Supplemental Indenture and perform its
obligations hereunder.


                                   ARTICLE 2
                     Amendments to Provisions of Indenture

               SECTION 201.  Amendments.  Subject to the conditions of Section
102(b) herein, the Indenture is hereby amended as set forth in the form of the
Amended and Restated Indenture attached hereto as Exhibit A.

               IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed as of the day and year first written
above.

                                    ADT OPERATIONS, INC.


                                    By: /s/ Jan S. Beck
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT LIMITED

                                    By: /s/ Stephen Ruzika
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT GENERAL HOLDINGS, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT SECURITY SERVICES, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT SECURITY SYSTEMS, WEST, INC.

                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT AUTOMOTIVE HOLDINGS, INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT AUTOMOTIVE, INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    AA PROPERTY HOLDINGS, INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT INVESTMENTS, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    AAAA DEALERS SERVICES INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT BUSINESS HOLDINGS, INC.



                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT PROPERTY HOLDINGS, INC.


                                    By: /s/ Steven Levine
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT SECURITY SYSTEMS, MANUFACTURING, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    MID-ATLANTIC SECURITY, INC.



                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:



                                    ADT AUTOMOTIVE SERVICES, INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    AUCTION TRANSPORT, INC.


                                    By: /s/ Richard H. Miller
                                       ------------------------------
                                       Name:
                                       Title:


                                    BRITISH CAR AUCTIONS, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    CCTC INTERNATIONAL, INC.


                                    By: /s/ Ann Olbert
                                       ------------------------------
                                       Name:
                                       Title:


                                    ADT SPECIALTY AUCTIONS, INC.



                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:



                                    FLYING LION INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                    THE CHASE MANHATTAN BANK


                                    By: /s/ Philbert Jones
                                       ------------------------------
                                       Name: Philbert Jones
                                       Title: Trust Officer


                                    TRI-CITY AUTO AUCTION, INC.


                                    By: /s/ Larry C. Reese
                                       ------------------------------
                                       Name:
                                       Title:


                                                                    EXHIBIT A
==============================================================================


                             ADT OPERATIONS, INC.,
                                  as Issuer,

                                      AND

                                 ADT LIMITED,
                          ADT GENERAL HOLDINGS, INC.,
                         ADT SECURITY SERVICES, INC.,
                       ADT SECURITY SYSTEMS, WEST, INC.,
                        ADT AUTOMOTIVE HOLDINGS, INC.,
                             ADT AUTOMOTIVE, INC.,
                          AA PROPERTY HOLDINGS, INC.,
                            ADT INVESTMENTS, INC.,
                          AAAA DEALERS SERVICES INC.,
                         ADT BUSINESS HOLDINGS, INC.,
                         ADT PROPERTY HOLDINGS, INC.,
                   ADT SECURITY SYSTEMS MANUFACTURING, INC.,
                         MID-ATLANTIC SECURITY, INC.,
                         ADT AUTOMOTIVE SERVICES INC.,
                            AUCTION TRANSPORT INC.,
                          BRITISH CAR AUCTIONS INC.,
                           CCTC INTERNATIONAL, INC.,
                         ADT SPECIALTY AUCTIONS, INC.,
                               FLYING LION INC.
                                      AND
                         TRI-CITY AUTO AUCTION, INC.,
                                as Guarantors,

                                      AND

                           THE CHASE MANHATTAN BANK
                                  as Trustee

                        --------------------------

                           Amended and Restated
                                  Indenture
                         Dated as of bullet, 1997

                        --------------------------

                                 $250,000,000
                         8-1/4% Senior Notes due 2000


==============================================================================

                             ADT OPERATIONS, INC.

              Reconciliation and tie between Trust Indenture Act
               of 1939 and Indenture, dated as of August 4, 1993

          Trust Indenture                                         Indenture
            Act Section                                            Section
          ---------------                                         ---------

Section 310 (a)(1)....................................................607
            (a)(2)....................................................607
            (b).......................................................608
Section 312 (c).......................................................701
Section 314 (a).......................................................703
            (a)(4)...................................................1008(a)
            (c)(1)....................................................102
            (c)(2)....................................................102
            (e).......................................................102
Section 315 (b).......................................................601
Section 316 (a)(last sentence)........................................101
            ("Outstanding")
            (a)(1)(A).................................................502, 512
            (a)(1)(B).................................................513
            (b).......................................................508
            (c).......................................................104(d)
Section 317 (a)(1)....................................................503
            (a)(2)....................................................504
            (b)......................................................1003
Section 318 (a).......................................................111

- ---------------
Note:  This reconciliation and tie shall not, for any purpose, be deemed to be
       a part of the Indenture.


                               TABLE OF CONTENTS

                                                                          Page

RECITALS.....................................................................1
PARTIES......................................................................1

                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

SECTION 101. Definitions...... ..............................................2
             Act.............................................................3
             ADT Limited.....................................................3
             Affiliate.......................................................3
             Agent...........................................................3
             Attributable Debt...............................................3
             Average Life to Stated Maturity.................................3
             Board of Directors..............................................3
             Board Resolution................................................4
             Business Day....................................................4
             Canadian Revolving Credit Lines.................................4
             Capitalized Lease Obligation....................................4
             Capital Stock...................................................4
             Cash Equivalents................................................4
             Change in Control...............................................5
             Commission......................................................6
             Common Stock....................................................6
             Company.........................................................6
             Company Request.................................................6
             Consolidated Net Worth..........................................6
             Consolidated Tangible Assets....................................6
             Corporate Trust Office..........................................6
             Corporation.....................................................6
             Default.........................................................7
             Defaulted Interest..............................................7
             Dollar Equivalent...............................................7
             Event of Default................................................7
             Exchange Act....................................................7
             Federal Bankruptcy Code.........................................7
             Finance Canada Preferred Stock..................................7
             Generally Accepted Accounting Principles........................7
             Guaranteed Obligations..........................................7
             Guaranteed Parties..............................................8
             Guarantees......................................................8
             Guarantor.......................................................8
             Guarantor Senior Indebtedness...................................8
             Holder..........................................................8
             Indebtedness....................................................9
             Indenture.......................................................9
             Interest Payment Date...........................................9
             Investment......................................................9
             Laidlaw Group...................................................9
             Lender..........................................................9
             Lien...........................................................10
             Material Restricted Subsidiary.................................10
             Maturity.......................................................10
             New Bank Credit Agreement......................................10
             Non-Guarantor..................................................10
             Officers' Certificate..........................................10
             Opinion of Counsel.............................................10
             Outstanding....................................................11
             Paying Agent...................................................11
             Permitted Non-Guarantor Indebtedness...........................11
             Person.........................................................13
             Post-Merger Entity.............................................13
             Predecessor Security...........................................13
             Preferred Stock................................................13
             Redeemable Capital Stock.......................................13
             Reference Banks................................................14
             Regular Record Date............................................14
             Responsible Officer............................................14
             Restricted Subsidiary..........................................14
             Securities.....................................................14
             Security Register..............................................14
             Security Registrar.............................................14
             Senior Subordinated Note Indenture.............................14
             Senior Subordinated Notes......................................15
             Special Record Date............................................15
             Stated Maturity................................................15
             Subordinated Indebtedness......................................15
             Subsidiary.....................................................15
             Subsidiary Guarantor...........................................15
             Surviving Entity...............................................15
             Trust Indenture Act............................................15
             TIA............................................................15
             Trustee........................................................15
             Tyco...........................................................15
             Unrestricted Subsidiary........................................15
             U.S. Government Obligations....................................16
             Vice President.................................................17
             Voting Stock...................................................17
             Wholly Owned Restricted Subsidiary.............................17
SECTION 102. Compliance Certificates and Opinions...........................17
SECTION 103. Form of Documents Delivered to Trustee.........................18
SECTION 104. Acts of Holders................................................19
SECTION 105. Notices, etc., to Trustee, Company, Guarantors and Agent.......20
SECTION 106. Notice to Holders; Waiver......................................20
SECTION 107. Effect of Headings and Table of Contents.......................21
SECTION 108. Successors and Assigns.........................................21
SECTION 109. Separability Clause............................................21
SECTION 110. Benefits of Indenture..........................................21
SECTION 111. Governing Law..................................................22
SECTION 112. Legal Holidays.................................................22
SECTION 113. No Recourse Against Others.....................................22
SECTION 114. Submission to Jurisdiction.....................................22

                                  ARTICLE TWO

                                SECURITY FORMS

SECTION 201. Forms Generally................................................23
SECTION 202. Form of Face of Security.......................................24
SECTION 203. Form of Reverse of Security....................................25
SECTION 204. Form of Trustee's Certificate of Authentication................28
SECTION 205. Form of Guarantee..............................................28

                                 ARTICLE THREE

                                THE SECURITIES

SECTION 301. Title and Terms................................................34
SECTION 302. Denominations..................................................35
SECTION 303. Execution, Authentication, Delivery and Dating.................35
SECTION 304. Temporary Securities...........................................36
SECTION 305. Registration, Registration of Transfer and Exchange............36
SECTION 306. Mutilated, Destroyed, Lost and Stolen Securities...............37
SECTION 307. Payment of Interest; Interest Rights Preserved.................38
SECTION 308. Persons Deemed Owners..........................................40
SECTION 309. Cancellation...................................................40
SECTION 310. Computation of Interest........................................40
SECTION 311. Designation as Senior Indebtedness.............................40

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

SECTION 401. Satisfaction and Discharge of Indenture........................41
SECTION 402. Application of Trust Money.....................................42

                                 ARTICLE FIVE

                                   REMEDIES

SECTION 501. Events of Default..............................................42
SECTION 502. Acceleration of Maturity; Rescission and Annulment.............45
SECTION 503. Collection of Indebtedness and Suits for Enforcement by
             Trustee........................................................46
SECTION 504. Trustee May File Proofs of Claim...............................47
SECTION 505. Trustee May Enforce Claims Without Possession of
             Securities.....................................................48
SECTION 506. Application of Money Collected.................................48
SECTION 507. Limitation on Suits............................................48
SECTION 508. Unconditional Right of Holders to Receive Principal,
             Premium and Interest...........................................49
SECTION 509. Restoration of Rights and Remedies.............................49
SECTION 510. Rights and Remedies Cumulative.................................49
SECTION 511. Delay or Omission Not Waiver...................................50
SECTION 512. Control by Holders.............................................50
SECTION 513. Waiver of Past Defaults........................................50
SECTION 514. Waiver of Stay or Extension Laws...............................51

                                  ARTICLE SIX

                                  THE TRUSTEE

SECTION 601. Notice of Defaults.............................................51
SECTION 602. Certain Rights of Trustee......................................52
SECTION 603. Trustee Not Responsible for Recitals or Issuance of
             Securities.....................................................53
SECTION 604. May Hold Securities............................................53
SECTION 605. Money Held in Trust............................................54
SECTION 606. Compensation and Reimbursement.................................54
SECTION 607. Corporate Trustee Required; Eligibility........................55
SECTION 608. Resignation and Removal; Appointment of Successor..............55
SECTION 609. Acceptance of Appointment by Successor.........................56
SECTION 610. Merger, Conversion, Consolidation or Succession to
             Business.......................................................57

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701. Disclosure of Names and Addresses of Holders...................57
SECTION 702. Reports by Trustee.............................................58
SECTION 703. Reports by Company and the Guarantors..........................58

                                 ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801. ADT Limited or Any Restricted Subsidiary May Consolidate,
             etc. Only on Certain Terms.....................................59
SECTION 802. ADT Limited May Amalgamate, Redomesticate, etc., Only on
             Certain Terms..................................................60
SECTION 803. Successor Substituted..........................................61

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

SECTION 901. Supplemental Indentures Without Consent of Holders.............62
SECTION 902. Supplemental Indentures with Consent of Holders................62
SECTION 903. Execution of Supplemental Indentures...........................63
SECTION 904. Effect of Supplemental Indentures..............................64
SECTION 905. Conformity with Trust Indenture Act............................64
SECTION 906. Reference in Securities to Supplemental Indentures.............64
SECTION 907. Notice of Supplemental Indentures..............................64

                                  ARTICLE TEN

                                   COVENANTS

SECTION 1001. Payment of Principal, Premium, if any, and Interest...........64
SECTION 1002. Maintenance of Office or Agency...............................65
SECTION 1003. Money for Security Payments to Be Held in Trust...............65
SECTION 1004. Corporate Existence...........................................67
SECTION 1005. Payment of Taxes and Other Claims.............................67
SECTION 1006. Maintenance of Properties.....................................67
SECTION 1007. Insurance.....................................................68
SECTION 1008. Statement by Officers As to Default...........................68
SECTION 1009. Provision of Financial Statements.............................68
SECTION 1010. Purchase of Securities upon Change in Control.................69
[SECTIONS 1011-1020 intentionally omitted.].................................70
SECTION 1021. Waiver of Certain Covenants...................................70

                                ARTICLE ELEVEN

                      DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1101. Company's Option to Effect Defeasance or Covenant
              Defeasance....................................................70
SECTION 1102. Defeasance and Discharge......................................70
SECTION 1103. Covenant Defeasance...........................................71
SECTION 1104. Conditions to Defeasance or Covenant Defeasance...............71
SECTION 1105. Deposited Money and U.S. Government Obligations to Be
              Held in Trust; Other Miscellaneous Provisions.................73
SECTION 1106. Reinstatement.................................................74

                                ARTICLE TWELVE

                                   GUARANTEE

SECTION 1201. Guarantee.....................................................74
SECTION 1202. Obligations of the Guarantors Unconditional...................76
SECTION 1203. Execution of Guarantee........................................76
SECTION 1204. Ranking of Guarantee..........................................77
SECTION 1205. Withholding...................................................77
SECTION 1206. Limitation of Subsidiary Guarantee............................78
SECTION 1207. Release of Guarantee..........................................78


       AMENDED AND RESTATED INDENTURE, dated as of o, 1997 among ADT
OPERATIONS, INC., a corporation duly organized and existing under the laws of
the State of Delaware (herein called the "Company"), having its principal
office at 902 Market Street, 13th Floor, Wilmington, Delaware 19899, as
Issuer, ADT LIMITED, a company duly organized and existing under the laws of
Bermuda ("ADT Limited"), having its principal office at Cedar House, 41 Cedar
Avenue, Hamilton HM12, Bermuda, ADT GENERAL HOLDINGS, INC., ADT SECURITY
SERVICES, INC., ADT SECURITY SYSTEMS, WEST, INC., ADT AUTOMOTIVE HOLDINGS,
INC., ADT AUTOMOTIVE, INC., AA PROPERTY HOLDINGS, INC., ADT INVESTMENTS, INC.,
AAAA DEALERS SERVICES INC., ADT BUSINESS HOLDINGS, INC., ADT PROPERTY
HOLDINGS, INC., ADT SECURITY SYSTEMS MANUFACTURING, INC., MID-ATLANTIC
SECURITY, INC., ADT AUTOMOTIVE SERVICES INC., BRITISH CAR AUCTIONS INC., CCTC
INTERNATIONAL, INC. and FLYING LION INC., each a corporation duly organized and
existing under the laws of the State of Delaware, AUCTION TRANSPORT INC., a
corporation duly organized and existing under the laws of Missouri, ADT
SPECIALTY AUCTIONS, INC., INC., a corporation duly organized and existing
under the laws of the State of Michigan, and TRI-CITY AUTO AUCTION, INC., a
corporation duly organized and existing under the laws of the State of
Washington, as Guarantors (the "Guarantors"), and THE CHASE MANHATTAN BANK, a
New York banking corporation, duly organized and existing under the laws of
the State of New York, as Trustee (herein called the "Trustee").

                   RECITALS OF THE COMPANY AND THE GUARANTOR

      The Company has duly authorized the creation of an issue of 8-1/4%
Senior Notes due 2000 (herein called the "Securities"), of substantially the
tenor and amount hereinafter set forth, and to provide therefor the Company
has duly authorized the execution and delivery of the Indenture, dated as of
August 4, 1993 among the Company, the Guarantors listed therein and the
Trustee (the "1993 Senior Note Indenture") and the Securities.

      The Guarantor has duly authorized the issuance of a guarantee (the
"Guarantees") of the Securities, of substantially the tenor hereinafter set
forth, and to provide therefor each Guarantor has duly authorized the
execution and delivery of the 1993 Senior Note Indenture and the Guarantees.

      The Holders of not less than a majority in principal amount of the
Outstanding Securities, by Act of said Holders delivered to the Company and
the Trustee, have authorized certain amendments to the 1993 Senior Note
Indenture.
      The Company, the Guarantors and the Trustee have duly authorized the
execution and delivery of this Indenture.

      This Indenture is subject to the provisions of the Trust Indenture Act
of 1939, as amended, that are required to be part of this Indenture and shall,
to the extent applicable, be governed by such provisions.

      All things necessary have been done to make (i) the Securities the valid
obligations of the Company, (ii) the Guarantees the valid obligation of each
Guarantor and (iii) this Indenture a valid agreement of the Company and the
Guarantors, in accordance with their respective terms.

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

      For and in consideration of the premises, the prior purchase of the
Securities by the Holders thereof and the receipt of consideration pursuant to
a simultaneous tender offer and consent solicitation by the Company for the
Securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Securities, as follows:

                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

       SECTION 101.  Definitions.

       For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

      (a) the terms defined in this Article have the meanings assigned to them
          in this Article, and include the plural as well as the singular;

      (b) all other terms used herein which are defined in the Trust Indenture
          Act, either directly or by reference therein, have the meanings
          assigned to them therein, and the terms "cash transaction" and
          "self-liquidating paper", as used in TIA Section 311, shall have
          the meanings assigned to them in the rules of the Commission
          adopted under the Trust Indenture Act; and

      (c) the words "herein", "hereof" and "hereunder" and other words of
          similar import refer to this Indenture as a whole and not to any
          particular Article, Section or other subdivision.

       Certain terms, used principally in Article Ten, are defined in that
Article.

       "Act", when used with respect to any Holder, has the meaning specified
in Section 104 hereof.

       "ADT Limited" means ADT Limited, a Bermuda company.

       "Affiliate" of any specified Person means (i) any other Person directly
or indirectly controlling or controlled by or under direct or indirect common
control with such specified Person or (ii) any officer or director of such
specified Person.  For the purposes of this definition, "control" when used
with respect to any specified Person means the power to direct the management
and policies of such Person, directly or indirectly, whether through the
ownership of voting securities, by contract or otherwise; and the terms
"controlling" and "controlled" have meanings correlative to the foregoing.

       "Agent" means The Bank of Nova Scotia, as agent under the New Bank
Credit Agreement, and any future such agent or agents under the New Bank
Credit Agreement.

       "Attributable Debt" means, when used in connection with a sale and
leaseback transaction, at the time of determination, the present value
(discounted at the interest rate implicit in the lease, compounded
semiannually) of the obligation of the lessee of the property subject to such
sale and leaseback transaction for rental payments during the remaining term
of the lease included in such transaction, including any period for which such
lease has been extended or may, at the option of the lessor, be extended or
until the earliest date on which the lessee may terminate such lease without
penalty or upon payment of penalty (in which case the rental payments shall
include such penalty), after excluding all amounts required to be paid on
account of maintenance and repairs, insurance, taxes, assessments, water,
utilities and similar charges.

       "Average Life to Stated Maturity" means, with respect to any
Indebtedness, as at any date of determination, the quotient obtained by
dividing (i) the sum of the products  of (a) the number of years from such
date to the date or dates of each successive scheduled principal payment
(including, without limitation, any sinking fund requirements) of such
Indebtedness multiplied by (b) the amount of each such principal payment by
(ii) the sum of all such principal payments.

       "Board of Directors" means the board of directors of ADT Limited;
provided, however, that for purposes of the proviso of Section 1004 hereof
with respect to any right or franchise of a Restricted Subsidiary other than
the Company, "Board of Directors" shall include any committee of such Board of
Directors duly authorized to act under this Indenture.

       "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of ADT Limited, the Company or any other
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors of ADT Limited or the board of directors of the Company or such
other Guarantor, as the case may be, and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

       "Business Day" means each Monday, Tuesday, Wednesday, Thursday and
Friday which is not a day on which banking institutions in The City of New
York are authorized or obligated by law or executive order to close.

       "Canadian Revolving Credit Lines" means the committed lines of credit
outstanding on the date hereof for working capital purposes in Canada in an
aggregate amount not to exceed Canadian $60,000,000, provided that all amounts
outstanding under such committed lines of credit are at all times supported by
irrevocable letters of credit issued under the New Bank Credit Agreement.

       "Capitalized Lease Obligation" means any obligation under any capital
lease of real or personal property that, in accordance with GAAP, has been
recorded as a capitalized lease obligation, and, for purposes of this
Indenture, the amount of such obligation at any date shall be the capitalized
amount thereof at such date, determined in accordance with GAAP.

       "Capital Stock" means, with respect to any Person, any and all shares,
interests, participations or other equivalents (however designated) of such
Person's capital stock whether now outstanding or issued after the date
hereof, including, without limitation, all Common Stock and Preferred Stock.

       "Cash Equivalents" means (i) any evidence of Indebtedness with a
maturity of 180 days or less issued or directly and fully guaranteed or
insured by the United States of America or any agency or instrumentality
thereof (provided that the full faith and credit of the United States of
America is pledged in support thereof); (ii) certificates of deposit or time
deposits with a maturity of 180 days or less of any financial institution that
is a member of the Federal Reserve System having combined capital and surplus
and undivided profits of not less than $500,000,000 (x) whose short term
obligations have a rating, at the time as of which any such Investment is
made, of "P-1" (or higher) according to Moody's Investors Service, Inc. or
"A-1" (or higher) according to Standard & Poor's Corporation or (y) whose debt
is rated, at the time as of which any Investment therein is made, "A" (or
higher) according to Moody's Investors Service, Inc. or "A" (or higher)
according to Standard & Poor's Corporation; (iii) commercial paper with a
maturity of 180 days or less issued by a corporation (other than an Affiliate
of ADT Limited) organized under the laws of any state of the United States of
America or the District of Columbia and rated "P-1" (or higher) according to
Moody's Investors Service, Inc. or "A-1" (or higher) according to Standard &
Poor's Corporation or at least an equivalent rating category of another
nationally recognized securities rating agency; and (iv) any money market
deposit accounts issued or offered by any commercial banking institution
described in clause (ii) above.

       "Change in Control" means an event as a result of which (i) any
"person" or "group" (as such terms are used in Sections 13(d) and 14(d) of the
Exchange Act), including the Laidlaw Group, is or becomes the direct or
indirect "beneficial owner" (as defined in Rule 13d-3 and 13d-5 under the
Exchange Act) of (A) if the Laidlaw Group beneficially owns more than 20% of
the outstanding Voting Stock of ADT Limited, more than 50% of such outstanding
Voting Stock and (B) if the Laidlaw Group beneficially owns 20% or less of the
outstanding Voting Stock of ADT Limited, more than 40% of such outstanding
Voting Stock, (ii) during any period of two consecutive years, individuals who
either (a) were members of the Board of Directors at the beginning of such
period or (b) whose election by the Board of Directors or whose nomination for
election by the shareholders of ADT Limited was approved by a vote of 66 2/3%
of the directors then still in office who were either directors at the
beginning of such period or whose election or nomination for election was
previously approved as provided for in this clause (b) cease for any reason
(including as a result of any proxy contest involving the solicitation of
revocable proxies under Section 14(a) of the Exchange Act) to constitute a
majority of the Board of Directors, (iii) the Company consolidates with or
merges with or into any other Person or all or substantially all of the
Company's assets are sold, conveyed, assigned, transferred, leased or
otherwise disposed of to any Person, or any corporation consolidates with or
merges with or into the Company (other than to, with or into a Wholly Owned
Restricted Subsidiary of ADT Limited), or (iv) ADT Limited consolidates or
amalgamates with or merges with or into any Person or all or substantially all
of ADT Limited's assets are sold, conveyed, assigned, leased or otherwise
disposed of to any Person, or any corporation consolidates with or merges with
or into ADT Limited, in any such event pursuant to a transaction in which the
outstanding Voting Stock of ADT Limited is changed into or exchanged for cash,
securities or other property, other than any such transaction (a) where the
outstanding Voting Stock of ADT Limited is not changed or exchanged at all
(except, with respect to any such transaction described above, to the extent
necessary to reflect a change in the jurisdiction of incorporation of ADT
Limited) or (b) where (A) the outstanding Voting Stock of ADT Limited is
changed into or exchanged for Voting Stock (other than Redeemable Capital
Stock) of the surviving corporation and (B) no "person" or "group" (as such
term is used in Sections 13(d) and 14(d) of the Exchange Act) is the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange
Act, except that a Person shall be deemed to have "beneficial ownership" of all
securities that such Person has the right to acquire, whether or not such
right is exercisable immediately or only after the passage of time)
immediately after such transaction, directly or indirectly, of more than 50%
of the total outstanding Voting Stock of the surviving corporation.

       "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under  the Securities Exchange Act of 1934, or,
if at any time after the execution of this Indenture such Commission is not
existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties at such time.

       "Common Stock" means, with respect to any Person, any and all shares,
interests, participations and other equivalents (however designated, whether
voting or non-voting) of such Person's common stock, whether now outstanding
or issued after the date of this Indenture, and includes, without limitation,
all series and classes of such common stock.

       "Company" means the Person named as the "Company" in the first
paragraph of this Indenture, until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

       "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman, its President, any Vice
President, its Treasurer or an Assistant Treasurer, and delivered to the
Trustee.

       "Consolidated Net Worth" means the consolidated stockholders' equity
(excluding Redeemable Capital Stock) of a person and its consolidated
Subsidiaries (and in the case of ADT Limited, of ADT Limited and its
Restricted Subsidiaries), as determined in accordance with GAAP.

       "Consolidated Tangible Assets" means the total amount of assets of the
Company, ADT Limited and the other Restricted Subsidiaries (less applicable
reserves and other properly deductible items) after deducting (i) all current
liabilities (excluding any thereof which are by their terms extendible or
renewable at the option of the obligor thereon to a time more than 12 months
after the time as of which the amount thereof is being computed) and (ii) all
good will, trade names, trademarks, patents, unamortized debt discount and
expense and other like intangibles, all determined in accordance with GAAP.

       "Corporate Trust Office" means the principal corporate trust office of
the Trustee, at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at 450 West 33rd Street, 15th Floor, New York, New York 10001,
except that with respect to presentation of Securities for payment or for
registration of transfer or exchange, such term shall mean the office or
agency of the Trustee at which, at any particular time, its corporate agency
business shall be conducted.

       "Corporation" includes corporations, associations, companies and
business trusts.

       "Default" means any event which is, or after notice or passage of time
or both would be, an Event of Default.

       "Defaulted Interest" has the meaning specified in Section 307.

       "Dollar Equivalent" means, with respect to any amount of any currency
other than U.S. dollars, the equivalent amount of U.S. dollars determined by
using the arithmetic average of the quoted spot rates at which the principal
office or principal branch office of each of the Reference Banks in London
offers to provide such other currency in exchange for U.S. dollars in London
at 2:00 P.M. London time on the date as of which such Dollar Equivalent is to
be determined, provided that if one or more of the Reference Banks no longer
announces such quoted spot rates for such currency, then the Dollar Equivalent
shall be determined by using the arithmetic average of the quoted spot rates
or the quoted spot rate, as the case may be, of the other Reference Banks or
Bank, respectively.

       "Event of Default" has the meaning specified in Section 501 hereof.

       "Exchange Act" means the Securities Exchange Act of 1934, as amended.

       "Federal Bankruptcy Code" means Title 11 of the United States Code, as
amended from time to time.

       "Finance Canada Preferred Stock" means the Non-Voting Exchangeable
Shares, Series A, of ADT Finance Inc., a Canadian corporation (the "Series A
Shares"), and any publicly-held non-voting Preferred Stock issued by any
successor corporation of ADT Finance Inc. incorporated under the laws of
Canada ("Finance Canada") (i) in respect of which dividends are payable only
when a dividend is payable by ADT Limited in respect of its voting Common
Stock, (ii) that is convertible, exchangeable or redeemable only for voting
Common Stock of ADT Limited, (iii) that will entitle the holder thereof to
participate in any liquidation, dissolution or winding up of Finance Canada,
whether voluntary or  involuntary, or any other distribution of assets of
Finance Canada among its stockholders for the purpose of winding up its
affairs, to no greater extent than the extent to which the holders of the
Series A Shares would currently so participate and (iv) the other terms of
which are not adverse in any material respect to the Holders of the
Securities.

       "Generally Accepted Accounting Principles" or "GAAP" means generally
accepted accounting principles in the United States, consistently applied,
that are in effect on the date hereof.

       "Guaranteed Obligations" has the meaning specified in Section 1201
hereof.

       "Guaranteed Parties" means all the Persons who are now or who hereafter
become Holders and the Trustee.

       "Guarantees" means the guarantees of the Guarantors set forth in
Article Twelve of this Indenture and more particularly means any guarantees
endorsed on any Securities delivered under this Indenture.

       "Guarantor" means each of the parties named as "Guarantors" in the first
paragraph of this Indenture, until a successor replaces any such Guarantor
pursuant to the applicable provisions hereof and, thereafter, shall mean such
successor; provided, however, that  unless expressly provided for otherwise by
a supplemental indenture hereto, no Post-Merger Entity shall be a "Guarantor".

       "Guarantor Senior Indebtedness" means the principal of (and premium, if
any, on) and interest on (including interest accruing after the filing of a
petition initiating any proceeding pursuant to any bankruptcy law, whether or
not allowable as a claim in such proceeding) and other amounts due on or in
connection with any Indebtedness of any Guarantor, whether outstanding on the
date hereof or hereafter created, incurred or assumed, unless, in the case of
any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is outstanding expressly provides that such
Indebtedness shall not be pari passu with the Guarantees.  Without limiting
the generality of the foregoing, "Guarantor Senior Indebtedness" shall include
the principal of (and premium, if any, on) and interest (including interest
accruing after the filing of a petition initiating any proceeding pursuant to
any bankruptcy law, whether or not allowable as a claim in such proceeding) on
all obligations of every nature of any Guarantor to the Lenders under the New
Bank Credit Agreement and to the Holders of the Securities, and any interest
rate or foreign exchange agreement now existing or hereinafter entered into by
any Guarantor with any Lender, including, without limitation, all fees,
expenses (including fees and expenses of counsel), claims, charges and
indemnity obligations.  Notwithstanding the foregoing, "Guarantor Senior
Indebtedness" shall not include (i) Indebtedness evidenced by the guarantees
of the Senior Subordinated Notes, (ii) Indebtedness of any Guarantor that is
expressly subordinated in right of payment to any of such Guarantor's
Guarantees, (iii) Indebtedness of any Guarantor that by operation of law is
subordinate to any general unsecured obligations of such Guarantor, (iv)
Indebtedness represented by Redeemable Capital Stock, (v) Indebtedness of any
Guarantor to ADT Limited or any of its Subsidiaries, (vi) any liability for
federal, state, local or other taxes owed or owing by any Guarantor and (vii)
trade payables owed or owing by any Guarantor.

       "Holder" means a Person in whose name a Security is registered in the
Security Register.

       "Indebtedness" means (i) any liability of any Person (A) for borrowed
money, or under any reimbursement obligation relating to a letter of credit,
or (B) evidenced by a bond, note, debenture or similar instrument (including a
purchase money obligation) given in connection with the acquisition of any
businesses, properties or assets of any kind (other than a trade payable or a
current liability arising in the ordinary course of business), or (C) under
interest rate contracts and exchange rate contracts, or (D) for the payment of
money relating to a Capitalized Lease Obligation or (E) for all Redeemable
Capital Stock valued at the greater of its voluntary or involuntary
liquidation preference plus accrued and unpaid dividends; (ii) any liability
of others described in the preceding clause (i) that such Person has
guaranteed or that is otherwise its legal liability; (iii) all Indebtedness
referred to in (but not excluded from) clauses (i) and (ii) above of other
Persons and all dividends of other Persons, the payment of which is secured by
(or for which the holder of such Indebtedness has an existing right,
contingent or otherwise, to be secured by) any Lien upon or in property
(including, without limitation, accounts and contract rights) owned by such
Person, even though such Person has not assumed or become liable for the
payment of such Indebtedness; and (iv) any amendment, supplement,
modification, deferral, renewal, extension or refunding of any liability of
the types referred to in clauses (i), (ii) and (iii) above.

       "Indenture" means this amended and restated indenture as originally
executed and as it may from time to time be supplemented or  amended by one or
more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof.

       "Interest Payment Date" means the Stated Maturity of an installment of
interest on the Securities.

       "Investment" means any direct or indirect advance, loan (other than
advances to customers in the ordinary course of business, which are recorded
as accounts receivable on the balance sheet of the Company, ADT Limited and
the other Restricted Subsidiaries) or other extension of credit or capital
contribution to (by means of any transfer of cash or other property to others
or any payment for property or services for the account or use of others), or
any purchase or acquisition of Capital Stock, bonds, notes, debentures or
other securities issued by any other Person.

       "Laidlaw Group" means Laidlaw Inc., a Canadian corporation, and any of
its Affiliates or any "group" (as such term is used in Sections 13(d) and
14(d) of the Exchange Act) that includes Laidlaw Inc. or any of its Affiliates.

       "Lender" means the various financial institutions as are, or shall from
time to time become, parties to the New Bank Credit Agreement.

       "Lien" means any mortgage, charge, pledge, lien, security interest or
encumbrance of any kind.

       "Material Restricted Subsidiary" means any Restricted Subsidiary whose
total assets or consolidated revenues (or, where ADT Limited owns directly or
indirectly less than 100% of the equity share capital of such Restricted
Subsidiary, that part thereof attributable to ADT Limited's direct or indirect
interest therein) is equal to or greater than 5% of the total assets or 5% of
consolidated revenues, as the case may be, of the Company, ADT Limited and the
other Restricted Subsidiaries taken as a whole as of the date of the latest
consolidated financial statements of ADT Limited; provided, however, that a
Material Restricted Subsidiary shall not include Insight Group Limited, a
United Kingdom corporation ("Insight"), for so long as Insight does not
conduct any business other than the travel services business and does not
account for more than 15% of the consolidated revenues of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited.

       "Maturity", when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes
due and payable as therein or herein provided, whether at the Stated Maturity
or purchase upon Change in Control, and whether by declaration of
acceleration, Change in Control, call for purchase or otherwise.

       "New Bank Credit Agreement" means, collectively, the Amended and
Restated Credit Agreement, dated as of April 14, 1997, among the Company, the
Lenders named therein, and the Bank of Nova Scotia, as Agent, together with
any related documents (including, without limitation, any guarantees or
security documents) as in effect on the date hereof and as such Agreement (and
such related documents) may be amended, restated, supplemented, renewed,
replaced or otherwise modified from time to time, including any agreement
extending the maturity of or refinancing or refunding all or any portion of
the Indebtedness or increasing the amount to be borrowed under such agreement
or any successor agreement, whether or not by or among the same parties.

       "Non-Guarantor" means all Restricted Subsidiaries of ADT Limited other
than the Company and the Guarantors.

       "Officers' Certificate" means a certificate signed by the Chairman, the
President or a Vice President, and by the Treasurer, an Assistant Treasurer,
the Secretary or an Assistant Secretary of the Company or ADT Limited, as the
case may be, and delivered to the Trustee.

       "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company, including an employee of the Company, and who shall
be acceptable to the Trustee.

       "Outstanding", when used with respect to the Securities, means, as of
the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except:

       (i) Securities theretofore cancelled by the Trustee or delivered to the
      Trustee for cancellation;

       (ii) Securities, or portions thereof, for whose payment money in the
      necessary amount has been theretofore deposited with the Trustee or any
      Paying Agent (other than the Company) in trust or set aside and
      segregated in trust by the Company (if the Company shall act as its own
      Paying Agent) for the Holders of such Securities;

       (iii) Securities, except to the extent provided in Sections 1102 and
      1103, with respect to which the Company has effected defeasance and/or
      covenant defeasance as provided in Article Eleven; and

       (iv) Securities which have been paid pursuant to Section 306 or in
      exchange for or in lieu of which other Securities have been
      authenticated and delivered pursuant to this Indenture, other than any
      such Securities in respect of which there shall have been presented to
      the Trustee proof satisfactory to it that such Securities are held by a
      bona fide purchaser in whose hands the Securities are valid obligations
      of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by TIA Section 313, Securities
owned by the Company or any Guarantor or any Affiliate of the Company or any
Guarantor shall be disregarded and deemed not to be Outstanding, except that,
in determining whether the Trustee shall be protected in making such
calculation or in relying upon any such request, demand, authorization,
direction, notice, consent or waiver, only Securities which the Trustee knows
to be so owned shall be so disregarded.  Securities so owned which have been
pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
Guarantor or any Affiliate of the Company or any Guarantor.

       "Paying Agent" means any Person (including the Company acting as Paying
Agent) authorized by the Company to pay the principal of (and premium, if any,
on) or interest on any Securities on behalf of the Company.

       "Permitted Non-Guarantor Indebtedness" means any of the following:

       (i) Indebtedness of any Non-Guarantor outstanding on the date hereof and
      Indebtedness under the Canadian Revolving Credit Lines;

       (ii) obligations of any Non-Guarantor pursuant to interest rate
      contracts designed to protect such Non-Guarantor against fluctuations in
      interest rates and exchange rates in respect of Indebtedness of such
      Non-Guarantor, to the extent the notional principal amount of such
      obligations does not exceed the aggregate principal amount of the
      Indebtedness to which such interest rate contracts relate;

       (iii) obligations of any Non-Guarantor pursuant to foreign exchange
      contracts designed to protect such Non-Guarantor against fluctuations in
      currency values and entered into in the ordinary course of business and
      not for purposes of speculation;

       (iv) Indebtedness of any Non-Guarantor owing to the Company or to ADT
      Limited or any of its Wholly Owned Restricted Subsidiaries; provided,
      however, that (A) any disposition, pledge or transfer of any such
      Indebtedness to a Person (other than to a Wholly Owned Restricted
      Subsidiary of ADT Limited) shall be deemed to be an incurrence of such
      Indebtedness by the obligor not permitted by this clause and (B) any
      transaction by which any Non-Guarantor that has any Indebtedness owing
      to another Restricted Subsidiary ceases to be a Restricted Subsidiary
      shall be deemed to be the incurrence of Indebtedness by such
      Non-Guarantor that is not permitted by this clause;

       (v) Indebtedness of any Non-Guarantor consisting of guarantees,
      indemnities, surety or performance bonds or obligations in respect of
      purchase price adjustments in connection with the acquisition or
      disposition of assets;

       (vi) Indebtedness in respect of letters of credit, surety bonds and
      performance bonds provided in the ordinary course of business;

       (vii) any renewals, extensions, substitutions, refinancings or
      replacements of any Indebtedness described in the foregoing clauses (i)
      through (vi) so long as (A) the principal amount of any such new
      Indebtedness (including any unused or revolving commitment thereunder)
      does not exceed the principal amount (including any unused or revolving
      commitment) (or, if such Indebtedness provides for an amount less than
      the principal amount thereof to be payable upon acceleration, such
      lesser amount) so refinanced, plus the amount of any premium required to
      be paid under the terms of the instrument governing such Indebtedness
      being so refinanced or the amount of any premium reasonably determined
      by the Non-Guarantor as necessary to accomplish such refinancing through
      means of a tender offer or privately negotiated transaction, (B) if such
      Indebtedness is Subordinated Indebtedness, such new Indebtedness is made
      subordinate to the Securities at least to the same extent as the
      Indebtedness being refinanced and (C) such new Indebtedness has an
      Average Life to Stated Maturity and final Stated Maturity of principal
      that equals or exceeds the Average Life to Stated Maturity and final
      Stated Maturity of the Indebtedness being refinanced;

       (viii) Indebtedness arising from the honoring by a bank or other
      financial institution of a check, draft or similar instrument
      inadvertently drawn against insufficient funds in the ordinary course of
      business; provided that such Indebtedness is extinguished within two
      Business Days of its incurrence; and

       (ix) Indebtedness in addition to that permitted by clauses (i) through
      (viii) above, that, together with any other outstanding Indebtedness
      (including Attributable Debt) incurred pursuant to this clause (ix) has
      (without duplication) an aggregate principal amount not in excess of 10%
      of Consolidated Tangible Assets of ADT Limited at the date of incurrence.

       "Person" means any individual, corporation, partnership, joint venture,
association, joint-stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

       "Post-Merger Entity" means (i) any of Tyco and its Subsidiaries and
(ii) any other Subsidiary of ADT Limited created or acquired after the
consummation of the merger between Tyco and Limited Apache, Inc., a
Wholly-Owned Subsidiary of ADT Limited and a Massachusetts corporation,
pursuant to the Agreement and Plan of Merger, dated as of March 17, 1997,
among Tyco, Limited Apache, Inc. and ADT Limited.

       "Predecessor Security" of any particular Security means every previous
Security evidencing all or a portion of the same debt as that evidenced by
such particular Security; and, for the purposes of this definition, any
Security authenticated and delivered under Section 306 in exchange for a
mutilated security or in lieu of a lost, destroyed or stolen Security shall be
deemed to evidence the same debt as the mutilated, lost, destroyed or stolen
Security.

       "Preferred Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated,
whether voting or non-voting) of such Person's preferred or preference stock
whether now outstanding or issued after the date hereof, including, without
limitation, all classes and series of preferred or preference stock.

       "Redeemable Capital Stock" means any Capital Stock of the Company, ADT
Limited or any other Restricted Subsidiary that, either by its terms, by the
terms of any security into which it is convertible or exchangeable or
otherwise, (i) is or upon the happening of an event or passage of time would
be required to be redeemed (for consideration other than shares of the common
equity capital of ADT Limited) on or prior to the final Stated Maturity of the
Securities, (ii) is redeemable at the option of the holder thereof (for
consideration other than shares of the common equity capital of ADT Limited)
at any time prior to  such final Stated Maturity, or (iii) is convertible into
or exchangeable for debt securities at any time prior to such final Stated
Maturity.

       "Reference Banks" means each of The Chase Manhattan Bank and Midland
Bank plc.

       "Regular Record Date" for the interest payable on any Interest Payment
Date means the January 15 or July 15 (whether or not a Business Day), as the
case may be, next preceding such Interest Payment Date.

       "Responsible Officer", when used with respect to the Trustee, means any
officer within the Corporate Trust Office of the trustee including the
chairman or any vice-chairman of the board of directors, the chairman or any
vice-chairman of the executive committee of the board of directors, the
chairman of the trust committee, the president, any vice president, the
secretary, any assistant secretary, the treasurer, any assistant treasurer,
the cashier, any assistant cashier, any trust officer or assistant trust
officer, the controller or any assistant controller or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above-designated officers, with the direct responsibility for the
administration of this Indenture on behalf of the Trustee and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of such officer's knowledge of and familiarity with
the particular subject.

       "Restricted Subsidiary" means any Subsidiary of ADT Limited, including,
without limitation, the Company, other than an Unrestricted Subsidiary.

       "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

       "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

       "Senior Subordinated Note Indenture" means the indenture dated as of
August 4, 1993, as amended, among the Company, as issuer, ADT Limited, as
guarantor, and The Bank of New York, as trustee, relating to the Company's
9-1/4% Senior Subordinated Notes due 2003, as such indenture may be amended or
supplemented from time to time by one or more indentures supplemental thereto
entered into pursuant to the applicable provisions thereof.

       "Senior Subordinated Notes" means the 9-1/4% Senior Subordinated Notes
due 2003 of the Company issued pursuant to the Senior Subordinated Note
Indenture.

       "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Trustee pursuant to Section 307.

       "Stated Maturity", when used with respect to any Indebtedness or any
installment of principal thereof or interest thereon, means the date specified
in such Indebtedness as the fixed date on which the principal of such
Indebtedness or such installment of principal or interest is due and payable.

       "Subordinated Indebtedness" means Indebtedness of any Person that by
its terms is subordinated in right of payment to other Indebtedness of such
Person and shall be deemed to include Redeemable Capital Stock.

       "Subsidiary" means, with respect to any Person, any corporation of
which, at the time of determination, such person, directly or indirectly
through one or more Subsidiaries, owns more than 50% of the Voting Stock.

       "Subsidiary Guarantor" means any Guarantor that is a Restricted
Subsidiary, other than a Restricted Subsidiary that is a direct or indirect
parent of the Company.

       "Surviving Entity" has the meaning specified in Section 801 hereof.

       "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939, as
amended, as in force at the date as of which this Indenture was executed,
except as provided in Section 905.

       "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.
       "Tyco" means Tyco International Limited, a Massachusetts corporation.

       "Unrestricted Subsidiary" means (a) any Post-Merger Entity and (b) any
Subsidiary of ADT Limited that at the time of determination shall be
designated an Unrestricted Subsidiary by the Board of Directors in the manner
provided below and (c) any Subsidiary of an Unrestricted Subsidiary.  The
Board of Directors may designate any Subsidiary of ADT Limited (including any
newly acquired or newly formed subsidiary) to be an Unrestricted Subsidiary if
such Subsidiary of ADT Limited is a Subsidiary (a) no portion of the
Indebtedness or any other obligation (contingent or otherwise) of which (i) is
guaranteed by the Company, ADT Limited or any other Restricted Subsidiary,
(ii) is recourse to or obligates the Company, ADT Limited or any other
Restricted Subsidiary in any way or (iii) subjects any property or asset of the
Company, ADT Limited or any other Restricted Subsidiary, directly or
indirectly, contingently or otherwise, to satisfaction thereof, (b) which has
no Indebtedness or any other obligation that, if in default in any respect
(including a non-payment default), would permit (upon notice, lapse of time or
both) any holder of any other Indebtedness of the Company, ADT Limited or any
other Restricted Subsidiary to declare a default on such other Indebtedness or
cause the payment thereof to be accelerated or payable prior to its Stated
Maturity, (c) with which the Company, ADT Limited or any other Restricted
Subsidiary has no contract, agreement, arrangement, understanding or
obligation of any kind, whether written or oral, other than a transaction on
terms no less favorable to the Company, ADT Limited or any other Restricted
Subsidiary than those that might be obtained at the time from Persons who are
not Affiliates of the Company or ADT Limited, and (d) with which neither the
Company, ADT Limited nor any other Restricted Subsidiary has any obligation
(i) to subscribe for additional shares of Capital Stock, or other equity
interest therein, or (ii) to maintain or preserve such Restricted Subsidiary's
financial condition or to cause such Restricted Subsidiary to achieve certain
levels of operating results; provided, however, that in no event shall any
Guarantor be deemed an Unrestricted Subsidiary.  The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided
that immediately after giving effect to such designation (A) any Indebtedness
or Liens of such Unrestricted Subsidiary would be permitted to be incurred by
such Restricted Subsidiary under this Indenture and (B) no Default or Event of
Default shall have occurred and be continuing.  Any such designation by the
Board of Directors shall be evidenced to the Trustees by promptly filing with
each of the Trustees a copy of the Board Resolution giving effect to such
designation and an Officers' Certificate certifying that such designation
complied with the foregoing provisions.  A designation of an Unrestricted
Subsidiary as a Restricted Subsidiary may not thereafter be rescinded.

       "U.S. Government Obligations" means securities that are (i) direct
obligations of the United States of America  for the timely payment of which
its full faith and credit is pledged or (ii) obligations of a Person
controlled or supervised by and acting as an agency or instrumentality of the
United States of America the timely payment of which is unconditionally
guaranteed as a full faith and credit obligation by the United States of
America, which, in either case, are not callable or redeemable at the option
of the issuer thereof, and shall also include a depository receipt issued by a
bank (as defined in Section 3(a)(2) of the Securities Act of 1933, as
amended), as custodian with respect to any such U.S. Government Obligation or
a specific payment of principal of or interest on any such U.S. Government
Obligation held by such custodian for the account of the holder of such
depository receipt; provided that (except as required by law) such custodian
is not authorized to make any deduction from the amount payable to the holder
of such depository receipt from any amount received by the custodian in
respect of the U.S. Government Obligation or the specific payment of principal
of or interest on the U.S. Government Obligation evidenced by such depository
receipt.

       "Vice President", when used with respect to the Company or the Trustee,
means any vice president, whether or not designated by a number or a word or
words added before or after the title "vice president".

       "Voting Stock" means stock of the class or classes pursuant to which
the holders thereof have the general voting power under ordinary circumstances
to elect at least a majority of the board of directors, managers or trustees
of a corporation (irrespective of whether or not at the time stock of any
other class or classes shall have or might have voting power by reason of the
happening of any contingency).

       "Wholly Owned Restricted Subsidiary" means (i) a Subsidiary all the
Capital Stock (other than directors' qualifying shares that are required under
applicable law) of which is owned by ADT Limited or another Wholly Owned
Restricted Subsidiary of ADT Limited and (ii) ADT Finance Inc., a Canadian
corporation, if and only if and for so long as, the Capital Stock of ADT
Finance Inc. consists entirely of Voting Stock, 100% of which is owned
directly or indirectly by ADT Limited, and Non-Voting Exchangeable Shares,
Series A, or any successor corporation of ADT Finance Inc. incorporated under
the laws of Canada, provided that the Capital Stock of such successor shall
consist entirely of Voting Stock, 100% of which is owned directly or
indirectly by ADT Limited, and Finance Canada Preferred Stock.

       SECTION 102. Compliance Certificates and Opinions.

       Upon any application or request by the Company or ADT Limited, on its
own behalf or on behalf of any Guarantor, to the Trustee to take any action
under any provision of this Indenture, the Company or ADT Limited, as the case
may be, shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent, if any, provided for in this Indenture (including any
covenant compliance with which constitutes a condition precedent) relating to
the proposed action have been complied with and an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any,
have been complied with, except that in the case of any such application or
request as to which the furnishing of such documents is specifically required
by any provision of this Indenture relating to such particular application or
request, no additional certificate or opinion need be furnished.

       Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1008(a)) shall include:

       (1) a statement that each Person signing such certificate or opinion
      has read such covenant or condition and the definitions herein relating
      thereto;

       (2) a brief statement as to the nature and scope of the examination or
      investigation upon which the statements or opinions contained in such
      certificate or opinion are based;

       (3) a statement that, in the opinion of each such Person, he has made
      such examination or investigation as is necessary to enable him to
      express an informed opinion as to whether or not such covenant or
      condition has been complied with; and

       (4) a statement as to whether, in the opinion of each such Person, such
      condition or covenant has been complied with.

       SECTION 103. Form of Documents Delivered to Trustee.

       In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and
one or more other such Persons as to other matters, and any such Person may
certify or give an opinion as to such matters in one or several documents.

       Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which his
certificate or opinion is based are erroneous.  Any such certificate or
Opinion of Counsel may be based, insofar as it relates to factual matters,
upon a certificate or opinion of, or representations by, an officer or
officers of the Company or such Guarantor stating that the information with
respect to such factual matters is in the possession of the Company or such
Guarantor, unless such counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect
to such matters are erroneous.

       Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

       SECTION 104. Acts of Holders.

       (a) Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agents duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required, to the Company or
any Guarantor.  Such instrument or instruments (and the action embodied
therein and evidenced thereby) are herein sometimes referred to as the "Act"
of the Holders signing such instrument or instruments.  Proof of execution of
any such instrument or of a writing appointing any such agent shall be
sufficient for any purpose of this Indenture and conclusive in favor of the
Trustee, the Company and each Guarantor, if made in the manner provided in
this Section.

       (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized
by law to take acknowledgments of deeds, certifying that the individual
signing such instrument or writing acknowledged to him the execution thereof.
Where such execution is by a signer acting in a capacity other than his
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of authority.  The fact and date of the execution of any such
instrument or writing, or the authority of the Person executing the same, may
also be proved in any other manner which the Trustee deems sufficient.

       (c) The principal amount and serial numbers of Securities held by any
Person, and the date of holding the same, shall be proved by the Security
Register.

       (d) If the Company shall solicit from the Holders of Securities any
request, demand, authorization, direction, notice, consent, waiver or other
Act, the Company may, at its option, by or pursuant to Board Resolution, fix
in advance a record date for the determination of Holders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or
other Act, but the Company shall have no obligation to do so.  Notwithstanding
TIA Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in
connection therewith and not later than the date such solicitation is
completed.  If such a record date is fixed, such request, demand,
authorization, direction, notice, consent, waiver or other Act may be given
before or after such record date, but only the Holders of record at the close
of business on such record date shall be deemed to be Holders for the purposes
of determining whether Holders of the requisite proportion of Outstanding
Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that
purpose the Outstanding Securities shall be computed as of such record date;
provided that no such authorization, agreement or consent by the Holders on
such record date shall be deemed effective unless it shall become effective
pursuant to the provisions of this Indenture not later than 11 months after
the record date.

       (e) Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future
Holder of the same Security  and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee, the
Company or any Guarantor in reliance thereon, whether or not notation of such
action is made upon such Security.

       SECTION 105. Notices, etc., to Trustee, Company, Guarantors and Agent.

       Any request, demand, authorization, direction, notice, consent, waiver
or Act of Holders or other document provided or permitted by this Indenture to
be made upon, given or furnished to, or filed with,

       (1) the Trustee by any Holder or by the Company or any Guarantor shall
      be sufficient for every purpose hereunder if made, given, furnished or
      filed in writing to or with the Trustee at its Corporate Trust Office,
      Attention:  Corporate Trust Administration,

       (2) the Company or any Guarantor by the Trustee or by any Holder shall
      be sufficient for every purpose hereunder (unless otherwise herein
      expressly provided) if in writing and mailed, first-class postage
      prepaid, to the Company or such Guarantor addressed to the Company or
      such Guarantor at the address of the Company's principal office
      specified in the first paragraph of this Indenture, or at any other
      address previously furnished in writing to the Trustee by the Company or
      such Guarantor, or

       (3) the Agent by the Company, any Guarantor, the Trustee or any Holder
      shall be sufficient for any purpose hereunder if made, given, furnished
      or delivered, in writing to or with the Agent addressed to it c/o The
      Bank of Nova Scotia, Atlanta Agency, Suite 2700, 600 Peachtree Street
      N.E., Atlanta, Georgia 30308, Attention:  ADT Operations Account Officer
      or at any other address previously furnished in writing to the Company
      and the Trustee by the Agent.

       SECTION 106. Notice to Holders; Waiver.

       Where this Indenture provides for notice of any event to Holders by the
Company, any Guarantor or the Trustee, such notice shall be sufficiently given
(unless otherwise herein expressly provided) if in writing and  mailed,
first-class postage prepaid, to each Holder affected by such event, at his
address as it appears in the Security Register, not later than the latest date,
and not earlier than the earliest date, prescribed for the giving of such
notice.  In any case where notice to Holders is given by mail, neither the
failure to mail such notice, nor any defect in any notice so mailed, to any
particular Holder shall affect the sufficiency of such notice with respect to
other Holders.  Any notice mailed to a Holder in the manner herein prescribed
shall be conclusively deemed to have been received by such Holder, whether or
not such Holder actually receives such notice.  Where this Indenture provides
for notice in any manner, such notice may be waived in writing by the Person
entitled to receive such notice, either before or after the event, and such
waiver shall be the equivalent of such notice.  Waivers of notice by Holders
shall be filed with the Trustee, but such filing shall not be a condition
precedent to the validity of any action taken in reliance upon such waiver.

       In case by reason of the suspension of or irregularities in regular
mail service or by reason of any other cause, it shall be impracticable to
mail notice of any event to Holders when such notice is required to be given
pursuant to any provision of this Indenture, then any manner of giving such
notice as shall be satisfactory to the Trustee shall be deemed to be a
sufficient giving of such notice for every purpose hereunder.

       SECTION 107. Effect of Headings and Table of Contents.

       The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

       SECTION 108. Successors and Assigns.

       All covenants and agreements in this Indenture by the Company and the
Guarantors shall bind their respective successors and assigns, whether so
expressed or not.

       SECTION 109. Separability Clause.

       In case any provision in this Indenture or in the Securities or the
Guarantees shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

       SECTION 110. Benefits of Indenture.

       Nothing in this Indenture, the Securities or the Guarantees, express or
implied, shall give to any Person, other than the parties hereto, any Paying
Agent, any Security Registrar and their successors hereunder and the Holders,
any benefit or any legal or equitable right, remedy or claim under this
Indenture.

       SECTION 111. Governing Law.

       This Indenture, the Securities and the Guarantees shall be governed by
and construed in accordance with the law of the State of New York.  This
Indenture is subject to the provisions of the Trust Indenture Act that are
required to be part of this Indenture and shall, to the extent applicable, be
governed by such provisions.

       SECTION 112. Legal Holidays.

       In any case where any Interest Payment Date, or Stated Maturity or
Maturity of any Security shall not be a Business Day, then (notwithstanding
any other provision of this Indenture, the Securities or the Guarantees)
payment of interest or principal (and premium, if any) need not be made on
such date, but may be made on the next succeeding Business Day with the same
force and effect as if made on the Interest Payment Date, or at the Stated
Maturity or Maturity; provided that no interest shall accrue for the period
from and after such Interest Payment Date, Stated Maturity or Maturity, as the
case may be.

       SECTION 113. No Recourse Against Others.

       A director, officer, employee or stockholder, as such, of the Company
or any Guarantor shall not have any liability for any obligations of the
Company or such Guarantor, as the case may be, under the Securities, this
Indenture or the Guarantees or for any claim based on, in respect of or by
reason of such obligations or their creation.  Each Holder by accepting any of
the Securities waives and releases all such liability.

       SECTION 114. Submission to Jurisdiction.

       The Company and each Guarantor irrevocably agree that any suit, action
or proceeding against the Company or any Guarantor arising out of or based
upon this Indenture, the Securities, the Guarantees or the public offering of
the Securities may be instituted in any state or federal court  in the Borough
of Manhattan, The City of New York, New York, and irrevocably waive, to the
extent they may lawfully do so, any objection which they may now or hereafter
have to the laying of venue of any such suit, action or proceeding, and
irrevocably submit to the nonexclusive jurisdiction of such courts in any
suit, action or proceeding.  The Company and each Guarantor hereby irrevocably
appoint ADT, Inc., 1750 Clint Moore Road, P.O. Box 5035, Boca Raton, Florida
33431, as their Authorized Agent (the "Authorized Agent") upon whom process
may be served in any suit, action or proceeding arising out of or based on
this Indenture, the Securities, the Guarantees or the public offering of the
Securities which may be instituted in any state or federal court in the
Borough of Manhattan, The City of New York, New York, and the Company and each
Guarantor expressly consent to the jurisdiction of any such court in respect
of any such suit, action or proceeding, and waive any other requirements of
or objections to personal jurisdiction with respect thereto.  The Company and
each Guarantor represent and warrant that the Authorized Agent has agreed to
act as said agent for service of process, and the Company and each Guarantor
agree to take any and all action, including the filing of any and all
documents and instruments, that may be necessary to continue such appointment
in full force and effect as aforesaid.  Service of process upon the Authorized
Agent and written notice of such service to the Company or any Guarantor shall
be deemed, in every respect, effective service of process upon the Company or
such Guarantor.  The foregoing does not limit any right of the Trustee or any
Holder of a Security to institute any suit, action or proceeding in any other
court of competent jurisdiction.


                                  ARTICLE TWO

                                SECURITY FORMS

       SECTION 201. Forms Generally.

       The Securities, the Guarantees and the Trustee's certificate of
authentication shall be in substantially the forms set forth in this Article,
with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or as may, consistently herewith, be determined by the
officers executing such Securities or Guarantees, as evidenced by their
execution of the Securities or  Guarantees.  Any portion of the text of any
Security or Guarantee may be set forth on the reverse thereof, with an
appropriate reference thereto on the face of the Security or Guarantee.

       The definitive Securities and Guarantees shall be printed, lithographed
or engraved on steel-engraved borders or may be produced in any other manner,
all as determined by the officers of the Company executing such Securities, as
evidenced by their execution of such Securities.

       SECTION 202. Form of Face of Security.

                             ADT OPERATIONS, INC.

                          8-1/4% Senior Note due 2000

No.____________________                                 $____________________

       ADT Operations, Inc., a Delaware corporation (herein called the
"Company", which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
           or registered assigns, the principal sum of                Dollars
on August 1, 2000 at the office or agency of the Company referred to below,
and to pay interest thereon on February 1, 1994 and semi-annually thereafter,
on February 1 and August 1 in each year, from August 4, 1993, or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for, at the rate of 8-1/4% per annum, until the principal hereof is paid or
duly provided for, and (to the extent lawful) to pay on demand interest on any
overdue interest at the rate borne by the Securities from the date on which
such overdue interest becomes payable to the date payment of such interest has
been made or duly provided for.  The interest so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest, which shall be the January 15 or July 15
(whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date.  Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date, and such defaulted interest, and (to the extent lawful) interest
on such defaulted interest at the rate borne by the Securities, may be paid to
the Person in whose name this Security (or one or more Predecessor Securities)
is registered at the close of business on a Special Record Date for the
payment of such Defaulted Interest to be fixed by the Trustee, notice whereof
shall be given to Holders of Securities not less than 10 days prior to such
Special Record Date, or may be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities may be listed, and upon such notice as may be required by such
exchange, all as more fully provided in said Indenture.  Payment of the
principal of (and premium, if any, on) and interest on this Security will be
made at the office or agency of the Company maintained for that purpose in The
City of New York, or at such other office or agency of the Company as may be
maintained for such purpose, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that payment of interest may be made at the
option of the Company (i) by check mailed to the address of the Person
entitled thereto as such address shall appear on the Security Register or (ii)
by transfer to an account maintained by the payee located in the United States.

       Reference is hereby made to the further provisions of this Security set
forth on the reverse hereof, which further provisions shall for all purposes
have the same effect as if set forth at this place.

       This Security is entitled to the benefits of the Guarantees issued by
each Guarantor of the punctual payment when due of the Guaranteed Obligations
made in favor of the Trustee for the benefit of the Holder.  Reference is
hereby made to Article Twelve of the Indenture for a statement of the
respective rights, limitations of rights, duties and obligations under the
Guarantees of the Guarantors, the Trustee and the Holders.

       Unless the certificate of authentication hereon has been duly executed
by the Trustee referred to on the reverse hereof by manual signature, this
Security shall not be entitled to any benefit under the Indenture, or be valid
or obligatory for any purpose.

       IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

      Dated:                                    ADT OPERATIONS, INC.

          [SEAL]                                By____________________________
Attest:_________________________
        Authorized Signature


       SECTION 203. Form of Reverse of Security.

       This Security is one of a duly authorized issue of securities of the
Company designated as its 8-1/4% Senior Notes due 2000 (herein called the
"Securities"), limited (except as otherwise provided in the Indenture referred
to below) in aggregate principal amount to $250,000,000, which may be issued
under an indenture (herein called the "Indenture") dated as of August 4, 1993
between the Company, as issuer, ADT Limited, ADT General Holdings, Inc., Inc.,
ADT Security Services, Inc., ADT Security Systems, West, Inc., ADT Automotive
Holdings, Inc., ADT Automotive, Inc., AA Property Holdings Inc., ADT
Investments, Inc., AAAA Dealers Services Inc., ADT Business Holdings, Inc.,
ADT Property Holdings, Inc., ADT Security Systems Manufacturing, Inc.,
Mid-Atlantic Security, Inc., ADT Automotive Services Inc., Auction Transport
Inc., British Car Auctions Inc., CCTC International, Inc., ADT Specialty
Auctions, Inc., Flying Lion Inc. and Tri-City Auto Auction, Inc., as
guarantors, and The Chase Manhattan Bank, as trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), as
amended and restated as of _____, 1997 (herein called the "Indenture") to
which Indenture and all indentures supplemental thereto reference is hereby
made for a statement of the respective rights, limitations of rights, duties,
obligations and immunities thereunder of the Company, the Guarantors, the
Trustee and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered.

       Upon the occurrence of a Change in Control, the Holder of this Security
may require the Company, subject to certain limitations provided in the
Indenture, to repurchase this Security at a purchase price in cash in an
amount equal to 101% of the principal amount thereof plus accrued and unpaid
interest.

       If an Event of Default shall occur and be continuing, the principal of
all the Securities may be declared due and payable in the manner and with the
effect provided in the Indenture.

       The Indenture contains provisions for defeasance at any time of (a) the
entire indebtedness of the Company on this Security and (b) certain
restrictive covenants and the related Defaults and Events of Default, upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

       The Indenture permits, with certain exceptions as therein provided, the
amendment thereof and the modification of the rights and obligations of the
Company and the Guarantors and the rights of the Holders under the Indenture
at any time by the Company, the Guarantors and the Trustee with the consent of
the Holders of a majority in aggregate principal amount of the Securities at
the time Outstanding.  The Indenture also contains provisions permitting the
Holders of specified percentages in aggregate principal amount of the
Securities at the time Outstanding, on behalf of the Holders of all the
Securities, to waive compliance by the Company and the Guarantors with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences.  Any such consent or waiver by or on behalf of the Holder
of this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof
whether or not notation of such consent or waiver is made upon this Security.

       No reference herein to the Indenture and no provision of this Security,
the Guarantee endorsed hereon or the Indenture shall alter or impair the
obligation of the Company or any Guarantor (in the event any Guarantor is
obligated to make payments in respect of the Securities), which is absolute
and unconditional, to pay the principal of (and premium, if any, on) and
interest on this Security at the times, place, and rate, and in the coin or
currency, herein prescribed.

       As provided in the Indenture and subject to certain limitations therein
set forth, the transfer of this Security is registrable on the Security
Register of the Company, upon surrender of this Security for registration of
transfer at the office or agency of the Company maintained for such purpose in
The City of New York, duly endorsed by, or accompanied by a written instrument
of transfer in form satisfactory to the Company and the Security Registrar
duly executed by, the Holder hereof or his attorney duly authorized in
writing, and thereupon one or more new Securities, of authorized denominations
and for the same aggregate principal amount, will be issued to the designated
transferee or transferees.

       The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof.  As provided in the
Indenture and subject to certain limitations therein set forth, the Securities
are exchangeable for a like aggregate principal amount of Securities of a
different authorized denomination, as requested by the Holder surrendering the
same.

       No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith.

       Prior to the time of due presentment of this Security for registration
of transfer, the Company, the Guarantors, the Trustee and any agent of the
Company, the Guarantors or the Trustee may treat the Person in whose name this
Security is registered as the owner hereof for all purposes, whether or not
this Security be overdue, and neither the Company, the Guarantors, the Trustee
nor any agent shall be affected by notice to the contrary.

       All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

       SECTION 204. Form of Trustee's Certificate of Authentication.

       The Trustee's certificate of authentication shall be in substantially
the following form:

                   TRUSTEE'S CERTIFICATE OF AUTHENTICATION.

       This is one of the Securities referred to in the within-mentioned
Indenture.

Dated:                                       THE CHASE MANHATTAN BANK,
                                               as Trustee

                                             By_______________________________
                                                  Authorized Officer

       SECTION 205. Form of Guarantee.

       The form of Guarantee shall be set forth on the Securities
substantially as follows:

                                   GUARANTEE

       For value received, each of the undersigned hereby irrevocably and
unconditionally guarantees, jointly and severally, on a senior basis to the
Holder of this Security and to the Trustee, on behalf of the Holder, (i) the
due and punctual payment of the principal of and interest on this Security,
when and as the same shall become due and payable, whether at Stated Maturity
or purchase upon Change in Control, and whether by declaration of acceleration,
Change in Control, call for purchase or otherwise, the due and punctual
payment of interest on the overdue principal of and interest, if any, on this
Security, to the extent lawful, and the due and punctual performance of all
other obligations of the Company to the Holder of this Security or the Trustee
all in accordance with the terms of this Security and the Indenture and (ii)
in the case of any extension of time of payment or renewal of this Security or
any of such other obligations, that the same will be promptly paid in full
when due or performed in accordance with the terms of the extension or
renewal, at Stated Maturity or purchase upon Change in Control, and whether by
declaration of acceleration, Change in Control, call for purchase or otherwise
(the obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  This Guarantee will not be valid or obligatory for any purpose
until the Trustee duly executes the certificate of authentication on the
Security upon which this Guarantee is endorsed.


Dated:

[SEAL]                                       ADT LIMITED,
                                             a Bermuda company

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       ADT GENERAL HOLDINGS, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       ADT SECURITY SERVICES, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       ADT SECURITY SYSTEMS, WEST, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature


[SEAL]                                       ADT AUTOMOTIVE HOLDINGS, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature


[SEAL]                                       ADT AUTOMOTIVE, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       AA PROPERTY HOLDINGS, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       ADT INVESTMENTS, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       AAAA DEALERS SERVICES INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                      ADT BUSINESS HOLDINGS, INC.,
                                              a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       ADT PROPERTY HOLDINGS, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       ADT SECURITY SYSTEMS,
                                               MANUFACTURING, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       MID-ATLANTIC SECURITY, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       ADT AUTOMOTIVE SERVICES INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                      AUCTION TRANSPORT INC.,
                                              a Missouri corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       BRITISH CAR AUCTIONS INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature



[SEAL]                                       CCTC INTERNATIONAL, INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       ADT SPECIALTY AUCTIONS, INC.,
                                               a Michigan corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       FLYING LION INC.,
                                               a Delaware corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       TRI-CITY AUTO AUCTION, INC.,
                                               a Washington corporation

Attest:__________________________            By_______________________________
        Authorized Signature




[SEAL]                                       [LIST ADDITIONAL GUARANTORS AND
                                               JURISDICTIONS OF INCORPORATION]

Attest:__________________________            By_______________________________
        Authorized Signature


                                 ARTICLE THREE

                                THE SECURITIES

       SECTION 301. Title and Terms.

       The aggregate principal amount of Securities which may be authenticated
and delivered under this Indenture is limited to $250,000,000, except for
Securities authenticated and delivered upon registration of transfer of, or in
exchange for, or in lieu of, other Securities pursuant to Section 304, 305,
306, 906 or 1010.

       The Securities shall be known and designated as the "8-1/4% Senior
Notes due 2000" of the Company.  Their Stated Maturity shall be August 1,
2000, and they shall bear interest at the rate of 8-1/4% per annum from August
4, 1993, or from the most recent Interest Payment Date to which interest has
been paid or duly provided for, payable on February 1, 1994 and semi-annually
thereafter on February 1 and August 1 in each year and at said Stated
Maturity, until the principal thereof is paid or duly provided for.

       The principal of (and premium, if any, on) and interest on the
Securities shall be payable at the office or agency of the Company maintained
for such purpose in The City of New York, or at such other office or agency of
the Company as may be maintained for such purpose; provided, however, that, at
the option of the Company, interest may be paid by check mailed to addresses
of the Persons entitled thereto as such addresses shall appear on the Security
Register.

       SECTION 302. Denominations.

       The Securities shall be issuable only in registered form without
coupons and only in denominations of $1,000 and any integral multiple thereof.

       SECTION 303. Execution, Authentication, Delivery and Dating.

       The Securities shall be executed on behalf of the Company by its
Chairman, its President or a Vice President, under its corporate seal
reproduced thereon and attested by its Secretary or an Assistant Secretary.
The signature of any of these officers on the Securities may be manual or
facsimile signatures of the present or any future such authorized officer and
may be imprinted or otherwise reproduced on the Securities.

       Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the
Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities
or did not hold such offices at the date of such Securities.

       At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities executed by the Company to
the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Securities.

       Each Security shall be dated the date of its authentication.

       No Security shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
duly executed by the Trustee by manual signature of an authorized officer, and
such certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder and is entitled to the benefits of this Indenture.

       In case the Company or any Guarantor, pursuant to Article Eight, shall
be consolidated, amalgamated or merged with or into any other Person or shall
be continued or redomesticated under the laws of a jurisdiction other than
Bermuda or shall convey, transfer, lease or otherwise dispose of all or
substantially all of its properties and assets to any Person, and the
successor Person resulting from such consolidation or amalgamation, or
surviving such merger, continuance or redomestication, or into which the
Company or such Guarantor shall have been merged, or the Person which shall
have received a conveyance, transfer, lease or other disposition as aforesaid,
shall have executed an indenture supplemental hereto with the Trustee pursuant
to Article Eight, any of the Securities authenticated or delivered prior to
such consolidation, amalgamation, merger, continuance, redomestication,
conveyance, transfer, lease or other disposition may, from time to time, at
the request of the successor Person, be exchanged for other Securities
executed in the name of the successor Person with such changes in phraseology
and form as may be appropriate, but otherwise in substance of like tenor as
the Securities surrendered for such exchange and of like principal amount; and
the Trustee, upon Company Request of the successor Person, shall authenticate
and deliver Securities as specified in such request for the purpose of such
exchange.  If Securities shall at any time be authenticated and delivered in
any new name of a successor Person pursuant to this Section in exchange or
substitution for or upon registration of transfer of any Securities, such
successor Person, at the option of the Holders but without expense to them,
shall provide for the exchange of all Securities at the time Outstanding for
Securities authenticated and delivered in such new name.

       SECTION 304. Temporary Securities.

       Pending the preparation of definitive Securities, the Company may
execute, the Guarantors may endorse Guarantees on, and upon Company Order the
Trustee shall authenticate and deliver temporary Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive
Securities in lieu of which they are issued and with such appropriate
insertions, omissions, substitutions and other variations as the officers
executing such Securities may determine, as conclusively evidenced by their
execution of such Securities.

       If temporary Securities are issued, the Company will cause definitive
Securities to be prepared without unreasonable delay.  After the preparation
of definitive Securities, the temporary Securities shall be exchangeable for
definitive Securities upon surrender of the temporary Securities at the office
or agency of the Company designated for such purpose pursuant to Section 1002,
without charge to the Holder.  Upon surrender for cancellation of any one or
more temporary Securities, the Company shall execute, the Guarantors shall
endorse Guarantees on, and upon Company Order the Trustee shall authenticate
and deliver in exchange therefor a like principal amount of definitive
Securities of authorized denominations.  Until so exchanged, the temporary
Securities shall in all respects be entitled to the same benefits under this
Indenture as definitive Securities.

       SECTION 305. Registration, Registration of Transfer and Exchange.

       The Company shall cause to be kept at the Corporate Trust Office of the
Trustee a register (the register maintained in such office and in any other
office or agency designated pursuant to Section 1002 being herein sometimes
referred to as the "Security Register") in which, subject to such reasonable
regulations as it may prescribe, the Company shall provide for the
registration of Securities and of transfers of Securities.  The Security
Register shall be in written form or any other form capable of being converted
into written form within a reasonable time.  At all reasonable times, the
Security Register shall be open to inspection by the Trustee.  The Trustee is
hereby initially appointed as security registrar (the "Security Registrar")
for the purpose of registering Securities and transfers of Securities as
herein provided.

       Upon surrender for registration of transfer of any Security at the
office or agency of the Company designated pursuant to Section 1002, the
Company shall execute, the Guarantors shall endorse Guarantees on, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Securities of any authorized
denomination or denominations of a like aggregate principal amount.

       At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination and of a like aggregate principal
amount, upon surrender of the Securities to be exchanged at such office or
agency.  Whenever any Securities are so surrendered for exchange, the Company
shall execute, the Guarantors shall endorse Guarantees on, and the Trustee
shall authenticate and deliver the Securities which the Holder making the
exchange is entitled to receive.

       All Securities issued upon any registration of transfer or exchange of
Securities shall be the valid obligations of the Company and the Guarantors,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Securities surrendered upon such registration of transfer or
exchange.

       Every Security presented or surrendered for registration of transfer or
for exchange shall (if so required by the Company or the Security Registrar)
be duly endorsed, or be accompanied by a written instrument of transfer, in
form satisfactory to the Company and the Security Registrar, duly executed by
the Holder thereof or his attorney duly authorized in writing.

       No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of transfer or exchange of Securities,
other than exchanges pursuant to Section 304, 906 or 1010 not involving any
transfer.

       SECTION 306. Mutilated, Destroyed, Lost and Stolen Securities.

       If (i) any mutilated Security is surrendered to the Trustee, or (ii)
the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them
to save each of them harmless, then, in the absence of notice to the Company or
the Trustee that such Security has been acquired by a bona fide purchaser, the
Company shall execute, the Guarantors shall endorse a Guarantee on and upon
Company Order the Trustee shall authenticate and deliver, in exchange for any
such mutilated Security or in lieu of any such destroyed, lost or stolen
Security, a new Security of like tenor and principal amount, bearing a number
not contemporaneously outstanding.

       In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

       Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

       Every new Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company and the Guarantors, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

       The provisions of this Section are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities.

       SECTION 307. Payment of Interest; Interest Rights Preserved.

       Interest on any Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in
whose name such Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest at the
office or agency of the Company maintained for such purpose pursuant to
Section 1002; provided, however, that each installment of interest may at the
Company's option be paid by (i) mailing a check for such interest, payable to
or upon the written order of the Person entitled thereto pursuant to Section
308, to the address of such Person as it appears in the Security Register or
(ii) transfer to an account maintained by the payee located in the United
States.

       Any interest on any Security which is payable, but is not punctually
paid or duly provided for, on any Interest Payment Date shall forthwith cease
to be payable to the Holder on the Regular Record Date by virtue of having
been such Holder, and such defaulted interest and (to the extent lawful)
interest on such defaulted interest at the rate borne by the Securities (such
defaulted interest and interest thereon herein collectively called "Defaulted
Interest") may be paid by the Company, at its election in each case, as
provided in clause (1) or (2) below:

          (1) The Company may elect to make payment of any Defaulted Interest
      to the Persons in whose names the Securities (or their respective
      Predecessor Securities) are registered at the close of business on a
      Special Record Date for the payment of such Defaulted Interest, which
      shall be fixed in the following manner.  The Company shall notify the
      Trustee in writing of the amount of Defaulted Interest proposed to be
      paid on each Security and the date of the proposed payment, and at the
      same time the Company shall deposit with the Trustee an amount of money
      equal to the aggregate amount proposed to be paid in respect of such
      Defaulted Interest or shall make arrangements satisfactory to the
      Trustee for such deposit prior to the date of the proposed payment, such
      money when deposited to be held in trust for the benefit of the Persons
      entitled to such Defaulted Interest as in this clause provided.
      Thereupon the Trustee shall fix a Special Record Date for the payment of
      such Defaulted Interest which shall be not more than 15 days and not
      less than 10 days prior to the date of the proposed payment and not less
      than 10 days after the receipt by the Trustee of the notice of the
      proposed payment.  The Trustee shall promptly notify the Company of such
      Special Record Date, and in the name and at the expense of the Company,
      shall cause notice of the proposed payment of such Defaulted Interest
      and the Special Record Date therefor to be given in the manner provided
      for in Section 106, not less than 10 days prior to such Special Record
      Date.  Notice of the proposed payment of such Defaulted Interest and the
      Special Record Date therefor having been so given, such Defaulted
      Interest shall be paid to the Persons in whose names the Securities (or
      their respective Predecessor Securities) are registered at the close of
      business on such Special Record Date and shall no longer be payable
      pursuant to the following clause (2).

           (2)  The Company may make payment of any Defaulted Interest in
      any other lawful manner not inconsistent with the requirements of any
      securities exchange on which the Securities may be listed, and upon
      such notice as may be required by such exchange, if, after notice
      given by the Company to the Trustee of the proposed payment pursuant
      to this clause, such manner of payment shall be deemed practicable by
      the Trustee.

       Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

       SECTION 308. Persons Deemed Owners.

       Prior to the due presentment of a Security for registration of
transfer, the Company, the Guarantors, the Trustee and any agent of the
Company, any Guarantor or the Trustee may treat the Person in whose name such
Security is registered as the owner of such Security for the purpose of
receiving payment of principal of (and premium, if any, on) and (subject to
Sections 305 and 307) interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and none of the Company,
any Guarantor, the Trustee or any agent of the Company, any Guarantor or the
Trustee shall be affected by notice to the contrary.

       SECTION 309. Cancellation.

       All Securities surrendered for payment, registration of transfer or
exchange shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee and shall be promptly cancelled by it.  The Company
may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company may have
acquired in any manner whatsoever, and may deliver to the Trustee (or to any
other Person for delivery to the Trustee) for cancellation any Securities
previously authenticated hereunder which the Company has not issued and sold,
and all Securities so delivered shall be promptly cancelled by the Trustee.
If the Company shall so acquire any of the Securities, however, such
acquisition shall not operate as satisfaction of the indebtedness represented
by such Securities unless and until the same are surrendered to the Trustee
for cancellation.  No Securities shall be authenticated in lieu of or in
exchange for any Securities cancelled as provided in this Section, except as
expressly permitted by this Indenture.  All cancelled Securities held by the
Trustee shall be disposed of by the Trustee in accordance with its customary
procedures and certification of their disposal delivered to the Company unless
by Company Order the Company shall direct that cancelled Securities be
returned to it.

       SECTION 310. Computation of Interest.

       Interest on the Securities shall be computed on the basis of a 360-day
year of twelve 30-day months.

       SECTION 311. Designation as Senior Indebtedness.

       The Company hereby confirms the designation of the Securities as "Senior
Indebtedness" for the purposes of the Senior Subordinated Note Indenture.

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

       SECTION 401. Satisfaction and Discharge of Indenture.

       This Indenture shall upon Company Request cease to be of further effect
(except as to surviving rights of registration of transfer or exchange of
Securities herein expressly provided for) and the Trustee, at the expense of
the Company, shall execute proper instruments acknowledging satisfaction and
discharge of this Indenture when

            (1)  either

                 (a) all Securities theretofore authenticated and delivered
            (other than (i)  Securities which have been destroyed, lost or
            stolen and which have been replaced or paid as provided in
            Section 306 and (ii)  Securities for whose payment money has
            theretofore been deposited in trust with the Trustee or any
            Paying Agent or segregated and held in trust by the Company and
            thereafter repaid to the Company or discharged from such trust,
            as provided in Section 1003) have been delivered to the Trustee
            for cancellation; or

                 (b) all such Securities not theretofore delivered to the
            Trustee for cancellation

                      (i) have become due and payable, or

                      (ii) will become due and payable at their Stated
                  Maturity within one year,

            and the Company in the case of (i) or (ii) above, has irrevocably
            deposited or caused to be deposited with the Trustee as trust
            funds in trust for the purpose an amount sufficient to pay and
            discharge the entire indebtedness on such Securities not
            theretofore delivered to the Trustee for cancellation, for
            principal (and premium, if any) and interest to the date of such
            deposit (in the case of Securities which have become due and
            payable) or to the Stated Maturity, as the case may be;

           (2) the Company has paid or caused to be paid all other sums
      payable hereunder by the Company; and

           (3) the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that (i) all
      conditions precedent herein provided for relating to the satisfaction
      and discharge of this Indenture have been complied with and (ii) such
      satisfaction and discharge will not result in a breach or violation
      of, or constitute a default hereunder or under any other material
      agreement or instrument to which the Company or any Guarantor is a
      party or by which the Company or any Guarantor is bound.

       Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company and the Guarantors to the Trustee under Section 606
and, if money shall have been deposited with the Trustee pursuant to subclause
(b) of clause (1) of this Section, the obligations of the Trustee under
Section 402 and the last paragraph of Section 1003 shall survive.

       SECTION 402. Application of Trust Money.

       Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities
and this Indenture, to the payment, either directly or through any Paying
Agent (including the Company acting as its own Paying Agent), as the Trustee
may determine, to the Persons entitled thereto, of the principal (and premium,
if any) and interest for whose payment such money has been deposited with the
Trustee; but such money need not be segregated from other funds except to the
extent required by law.

                                 ARTICLE FIVE

                                   REMEDIES

       SECTION 501. Events of Default.

       "Event of Default", wherever used herein, means any one of the
following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or
pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

           (1) default in the payment of any interest on any Security when it
      becomes due and payable, and continuance of such default for a period of
      30 days; or

           (2) default in the payment of the principal of (or premium, if
      any, on) any Security at its Maturity; or

           (3)   (i) default in the performance, or breach, of any covenant or
      warranty of the Company, ADT Limited or any of the other Restricted
      Subsidiaries in this Indenture (other than a default in the performance,
      or breach, of a covenant or warranty which is specifically dealt with
      elsewhere in paragraphs (1) or (2) of this Section 501 or in clauses
      (ii) and (iii) of this paragraph (3)), and continuance of such default
      or breach for a period of 60 days after there has been given, by
      registered or certified mail, to the Company by the Trustee or to the
      Company and the Trustee by the Holders of at least 25% in principal
      amount of the Outstanding Securities a written notice specifying such
      default or breach; (ii) default in the performance or breach of the
      provisions of Article Eight hereof; or (iii) the Company shall have
      failed to make or consummate a Change in Control Offer in accordance
      with the provisions of Section 1010 hereof; or

           (4)  (i) there shall have occurred one or more defaults by the
      Company, ADT Limited or any of the other Restricted Subsidiaries in
      the payment of the principal of (or premium, if any, on)
      Indebtedness aggregating $15,000,000 or more when the same becomes
      due and payable at its final maturity or (ii)  Indebtedness of the
      Company, ADT Limited or any of the other Restricted Subsidiaries
      aggregating $15,000,000 or more shall have been accelerated or
      otherwise declared due and payable, or required to be prepaid or
      repurchased (other than by regularly scheduled required prepayment or
      prepayments in respect of asset sales, excess cash flow or new
      financings), including amounts declared due and payable by virtue of
      any demand for cash collateralization, aggregating $15,000,000 or
      more, of any letter of credit prior to its final maturity; or

           (5) any Person entitled to take the actions described in this
      Section 501(5), after the occurrence of any event of default under
      any agreement or instrument evidencing any Indebtedness in excess of
      $15,000,000 in the aggregate (which, in the case of interest rate
      contracts or exchange rate contracts, shall be deemed to be the net
      Indebtedness outstanding under such contract on the date or during
      any period during which any action described in this Section 501(5)
      is taken) of the Company, ADT Limited or any of the other Restricted
      Subsidiaries, shall notify the Trustee of the intended sale or
      disposition of any assets of the Company, ADT Limited or any of the
      other Restricted Subsidiaries that have been pledged to or for the
      benefit of such Person to secure such Indebtedness or shall commence
      proceedings, or take any action (including by way of set-off) to
      retain in satisfaction of any Indebtedness, or to collect on, seize,
      dispose of or apply, any such assets of the Company, ADT Limited or
      any of the other Restricted Subsidiaries (including funds on deposit
      or held pursuant to lock-box and other similar arrangements),
      pursuant to the terms of any agreement or instrument evidencing any
      such Indebtedness of the Company, ADT Limited or any such other
      Restricted Subsidiary or in accordance with applicable law; or

           (6) final judgments or orders rendered against the Company, ADT
      Limited or any of the other Restricted Subsidiaries that require the
      payment in money, either individually or in an aggregate amount, of
      more than $15,000,000 (net of amounts covered by insurance) and
      either (i) an enforcement proceeding shall have been commenced by any
      creditor upon such judgment or order or (ii) there shall have been a
      period of 30 consecutive days during which a stay of enforcement of
      such judgment or order, by reason of pending appeal or otherwise, was
      not in effect; or

           (7) the entry of a decree or order by a court having
      jurisdiction in the premises adjudging the Company, ADT Limited or
      any other Material Restricted Subsidiary a bankrupt or insolvent, or
      approving as properly filed a petition seeking reorganization,
      arrangement, adjustment or composition of or in respect of the
      Company, ADT Limited or any other Material Restricted Subsidiary
      under the Federal Bankruptcy Code or any other applicable federal or
      state law, or appointing a receiver, liquidator, assignee, trustee,
      sequestrator (or other similar official) of the Company, ADT Limited
      or any other Material Restricted Subsidiary or of any substantial
      part of its property, or ordering the winding up or liquidation of
      its affairs, and the continuance of any such decree or order unstayed
      and in effect for a period of 90 consecutive days; or

           (8) the institution by the Company, ADT Limited or any other
      Material Restricted Subsidiary of proceedings to be adjudicated a
      bankrupt or insolvent, or the consent by it to the institution of
      bankruptcy or insolvency proceedings against it, or the filing by it
      of a petition or answer or consent seeking reorganization or relief
      under the Federal Bankruptcy Code or any other applicable federal or
      state law, or the consent by it to the filing of any such petition or
      to the appointment of a receiver, liquidator, assignee, trustee,
      sequestrator (or other similar official) of the Company, ADT Limited
      or any other Material Restricted Subsidiary or of any substantial
      part of its property, or the making by it of an assignment for the
      benefit of creditors, or the admission by it in writing of its
      inability to pay its debts generally as they become due; or

           (9) any Guarantee shall for any reason cease to be, or be
      asserted in writing by any Guarantor thereof or the Company not to
      be, in full force and effect, and enforceable in accordance with its
      terms (other than by reason of the termination of this Indenture or
      the release of any such Guarantee in accordance with this Indenture);
      provided, however, that if the Company or any Guarantor asserts in
      writing that any Guarantee is not in full force and effect and
      enforceable in accordance with its terms, such assertion shall not
      constitute an Event of Default for purposes of this paragraph (10) if
      (x) such written assertion is accompanied by an Opinion of Counsel to
      the effect that, as a matter of law, the defect or defects rendering
      such Guarantee unenforceable can be remedied within 10 days of the
      date of such assertion, (y) the Company or such Guarantor delivers an
      Officers' Certificate to the effect that the Company or such
      Guarantor represents that such defect or defects shall be so remedied
      within such 10-day period, and (z) such defect or defects are in fact
      so remedied within such 10-day period.

       SECTION 502. Acceleration of Maturity; Rescission and Annulment.

       If an Event of Default (other than an Event of Default specified in
Section 501(7) or 501(8)) occurs and is continuing, then and in every such
case the Trustee or the Holders of not less than 25% in principal amount of
the Securities Outstanding may declare all unpaid principal of (and premium,
if any, on) and any accrued interest on all the Securities to be due and
payable immediately, by a notice in writing to the Company and, if the New
Bank Credit Agreement is in effect, to the Agent (and to the Trustee if given
by Holders), and upon any such declaration such principal amount shall become
due and payable immediately.  If an Event of Default specified in Section
501(7) or 501(8) occurs and is continuing, then the principal amount of all
the Securities shall ipso facto become and be immediately due and payable
without any declaration or other act on the part of the Trustee or any Holder.

       At any time after a declaration of acceleration has been made but
before a judgment or decree for payment of the money due has been obtained by
the Trustee as hereinafter in this Article provided, the Holders of at least a
majority in aggregate principal amount of the Securities Outstanding, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if:

           (1) the Company has paid or deposited with the Trustee a sum
      sufficient to pay,

               (A) all overdue interest on all Outstanding Securities,

               (B) the principal of (and premium, if any, on) any Outstanding
            Securities which have become due otherwise than by such
            declaration of acceleration, and interest on such unpaid principal
            at the rate borne by the Securities,

               (C) to the extent that payment of such interest is lawful,
            interest on overdue interest at the rate borne by the
            Securities, and

               (D) all sums paid or advanced by the Trustee hereunder and the
            reasonable compensation, expenses, disbursements and advances of
            the Trustee, its agents and counsel; and

           (2) all Events of Default, other than the non-payment of amounts of
      principal of the Securities that have become due solely by such
      declaration of acceleration, have been cured or waived as provided in
      Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.  Upon a determination by the Company that the New Bank
Credit Agreement is no longer in effect, the Company shall promptly give to
the Trustee written notice thereof, which notice shall be countersigned by
the Agent.  Unless and until the Trustee shall have received such written
notice with respect to the New Bank Credit Agreement, the Trustee, subject
to the TIA Sections 315(a) through 315(d), shall be entitled in all
respects to assume that the New Bank Credit Agreement is in effect (unless
a Responsible Officer of the Trustee shall have actual knowledge to the
contrary).

       SECTION 503. Collection of Indebtedness and Suits for Enforcement by
Trustee.

       The Company and each Guarantor covenant that if

           (a) default is made in the payment of any installment of
      interest on any Security when such interest becomes due and payable
      and such default continues for a period of 30 days, or

           (b) default is made in the payment of the principal of (or
      premium, if any, on) any Security at the Maturity thereof,

the Company and such Guarantor will, upon demand of the Trustee, pay to the
Trustee for the benefit of the Holders of such Securities, the whole amount
then due and payable on such Securities for principal (and premium, if any)
and interest, and interest on any overdue principal (and premium, if any) and,
to the extent that payment of such interest shall be legally enforceable, upon
any overdue installment of interest, at the rate borne by the Securities, and,
in addition thereto, such further amount as shall be sufficient to cover the
costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

       If the Company or any Guarantor fails to pay such amounts forthwith
upon such demand, the Trustee, in its own name as trustee of an express trust,
may institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or such Guarantor and collect the moneys
adjudged or decreed to be payable in the manner provided by law out of the
property of the Company or such Guarantor, wherever situated.

       If an Event of Default occurs and is continuing, the Trustee may in its
discretion proceed to protect and enforce its rights and the rights of the
Holders by such appropriate private or judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, whether for
the specific enforcement of any covenant or agreement in this Indenture or in
aid of the exercise of any power granted herein, including, without
limitation, seeking recourse against any Guarantor pursuant to the terms of
its Guarantee, or to enforce any other proper remedy.

       SECTION 504. Trustee May File Proofs of Claim.

       In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any Guarantor or the property
of the Company or any Guarantor or their creditors, the Trustee (irrespective
of whether the principal of the Securities shall then be due and payable as
therein expressed or by declaration or otherwise and irrespective of whether
the Trustee shall have made any demand on the Company or any Guarantor for the
payment of overdue principal, premium, if any, or interest) shall be entitled
and empowered, by intervention in such proceeding or otherwise,

           (i) to file and prove a claim for the whole amount of principal
      (and premium, if any) and interest owing and unpaid in respect of the
      Securities and to file such other papers or documents as may be
      necessary or advisable in order to have the claims of the Trustee
      (including any claim for the reasonable compensation, expenses,
      disbursements and advances of the Trustee, its agents and counsel)
      and of the Holders allowed in such judicial proceeding, and

           (ii) to collect and receive any moneys or other property payable or
      deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay
the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any
other amounts due the Trustee under Section 606.

       Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof, or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

       SECTION 505. Trustee May Enforce Claims Without Possession of
Securities.

       All rights of action and claims under this Indenture, the Securities
and the Guarantees may be prosecuted and enforced by the Trustee without the
possession of any of the Securities or the production thereof in any
proceeding relating thereto, and any such proceeding instituted by the Trustee
shall be brought in its own name and as trustee of an express trust, and any
recovery of judgment shall, after provision for the payment of the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

       SECTION 506. Application of Money Collected.

       Any money collected by the Trustee pursuant to this Article shall be
applied in the following order, at the date or dates fixed by the Trustee and,
in case of the distribution of such money on account of principal (or premium,
if any) or interest, upon presentation of the Securities and the notation
thereon of the payment if only partially paid and upon surrender thereof if
fully paid:

           FIRST:  To the payment of all amounts due the Trustee under
      Section 606;

           SECOND:  To the payment of the amounts then due and unpaid for
      principal of (and premium, if any, on,) and interest on the Securities
      in respect of which or for the benefit of which such money has been
      collected, ratably, without preference or priority of any kind,
      according to the amounts due and payable on such Securities for
      principal (and premium, if any) and interest, respectively; and

           THIRD:  The balance, if any, to the Person or Persons entitled
      thereto.

       SECTION 507. Limitation on Suits.

       No Holder of any Securities shall have any right to institute any
proceeding, judicial or otherwise, with respect to this Indenture, or for
the appointment of a receiver or trustee, or for any other remedy
hereunder, unless

           (1) such Holder has previously given written notice to the
      Trustee of a continuing Event of Default;

           (2) the Holders of not less than 25% in principal amount of the
      Outstanding Securities shall have made written request to the Trustee to
      institute proceedings in respect of such Event of Default in its own
      name as Trustee hereunder;

           (3) such Holder or Holders have offered to the Trustee reasonable
      indemnity against the costs, expenses and liabilities to be incurred in
      compliance with such request;

           (4) the Trustee for 60 days after its receipt of such notice,
      request and offer of indemnity has failed to institute any such
      proceeding; and

           (5) no direction inconsistent with such written request has been
      given to the Trustee during such 60-day period by the Holders of a
      majority or more in principal amount of the Outstanding Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other
Holders, or to obtain or to seek to obtain priority or preference over any
other Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all the
Holders.

       SECTION 508. Unconditional Right of Holders to Receive Principal,
Premium and Interest.

       Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment, as provided herein (including, if applicable, Article Eleven)
and in such Security of the principal of (and premium, if any, on) and
(subject to Section 307) interest on, such Security on the respective Stated
Maturities expressed in such Security and to institute suit for the
enforcement of any such payment, and such rights shall not be impaired without
the consent of such Holder.

       SECTION 509. Restoration of Rights and Remedies.

       If the Trustee or any Holder has instituted any proceeding to enforce
any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantors, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

       SECTION 510. Rights and Remedies Cumulative.

       Except as otherwise provided with respect to the replacement or payment
of mutilated, destroyed, lost or stolen Securities in the last paragraph of
Section 306, no right or remedy herein conferred upon or reserved to the
Trustee or to the Holders is intended to be exclusive of any other right or
remedy, and every right and remedy shall, to the extent permitted by law, be
cumulative and in addition to every other right and remedy given hereunder or
now or hereafter existing at law or in equity or otherwise.  The assertion or
employment of any right or remedy hereunder, or otherwise, shall not prevent
the concurrent assertion or employment of any other appropriate right or
remedy.

       SECTION 511. Delay or Omission Not Waiver.

       No delay or omission of the Trustee or of any Holder of any Security to
exercise any right or remedy accruing upon any Event of Default shall impair
any such right or remedy or constitute a waiver of any such Event of Default
or an acquiescence therein.  Every right and remedy given by this Article or
by law to the Trustee or to the Holders may be exercised from time to time,
and as often as may be deemed expedient, by the Trustee or by the Holders, as
the case may be.

       SECTION 512. Control by Holders.

       The Holders of not less than a majority in principal amount of the
Outstanding Securities shall have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee, provided that

           (1) such direction shall not be in conflict with any rule of law or
      with this Indenture,

           (2) the Trustee may take any other action deemed proper by the
      Trustee which is not inconsistent with such direction, and

           (3) the Trustee need not take any action which might involve it in
      personal liability or be unjustly prejudicial to the Holders not
      consenting.

       SECTION 513. Waiver of Past Defaults.

       The Holders of not less than a majority in principal amount of the
Outstanding Securities may on behalf of the Holders of all the Securities
waive any past default hereunder and its consequences, except a default

           (1) in respect of the payment of the principal of (or premium,
      if any, on) or interest on any Security, or

           (2) in respect of a covenant or provision hereof which under
      Article Nine cannot be modified or amended without the consent of the
      Holder of each Outstanding Security affected.

       Upon any such waiver, such default shall cease to exist, and any Event
of Default arising therefrom shall be deemed to have been cured, for every
purpose of this Indenture; but no such waiver shall extend to any subsequent
or other default or Event of Default or impair any right consequent thereon.

       SECTION 514. Waiver of Stay or Extension Laws.

       The Company and each Guarantor covenant (to the extent that they may
lawfully do so) that they will not at any time insist upon, or plead, or in
any manner whatsoever claim or take the benefit or advantage of, any stay or
extension law wherever enacted, now or at any time hereafter in force, which
may affect the covenants or the performance of this Indenture; and the Company
and each Guarantor (to the extent that they may lawfully do so) hereby
expressly waive all benefit or advantage of any such law and covenant that
they will not hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted.

                                  ARTICLE SIX

                                  THE TRUSTEE

       SECTION 601. Notice of Defaults.

       Within 90 days after the occurrence of any Default hereunder, the
Trustee shall transmit in the manner and to the extent provided in TIA Section
313(c), notice of such Default hereunder known to the Trustee, unless such
Default shall have been cured or waived; provided, however, that, except in
the case of a Default in the payment of the principal of (or premium, if any,
on) or interest on any Security or in the payment of any sinking fund
installment, the Trustee shall be protected in withholding such notice if and
so long as the board of directors, the executive committee or a trust
committee of directors and/or Responsible Officers of the Trustee in good
faith determines that the withholding of such notice is in the interest of the
Holders; and provided further that in the case of any Default of the character
specified in clause (i) of Section 501(3) no such notice to Holders shall be
given until at least 60 days after the occurrence thereof.

       SECTION 602. Certain Rights of Trustee.

       Subject to the provisions of TIA Sections 315(a) through 315(d):

           (1) the Trustee may rely and shall be protected in acting or
      refraining from acting upon any resolution, certificate, statement,
      instrument, opinion, report, notice, request, direction, consent,
      order, bond, debenture, note, other evidence of indebtedness or other
      paper or document believed by it to be genuine and to have been
      signed or presented by the proper party or parties;

           (2) any request or direction of the Company mentioned herein
      shall be sufficiently evidenced by a Company Request or Company Order
      and any resolution of the board of directors of the Company may be
      sufficiently evidenced by a Board Resolution;

           (3) whenever in the administration of this Indenture the Trustee
      shall deem it desirable that a matter be proved or established prior
      to taking, suffering or omitting any action hereunder, the Trustee
      (unless other evidence be herein specifically prescribed) may, in the
      absence of bad faith on its part, rely upon an Officers' Certificate;

           (4) the Trustee may consult with counsel and the written advice
      of such counsel or any Opinion of Counsel shall be full and complete
      authorization and protection in respect of any action taken, suffered
      or omitted by it hereunder in good faith and in reliance thereon;

           (5) the Trustee shall be under no obligation to exercise any of the
      rights or powers vested in it by or pursuant to this Indenture at the
      request or direction of any of the Holders pursuant to this Indenture,
      unless such Holders shall have offered to the Trustee security or
      indemnity reasonably satisfactory to the Trustee against the costs,
      expenses and liabilities which might be incurred by it in compliance
      with such request or direction;

           (6) the Trustee shall not be bound to make any investigation
      into the facts or matters stated in any resolution, certificate,
      statement, instrument, opinion, report, notice, request, direction,
      consent, order, bond, debenture, note, other evidence of indebtedness
      or other paper or document, but the Trustee, in its discretion, may
      make such further inquiry or investigation into such facts or matters
      as it may see fit, and, if the Trustee shall determine to make such
      further inquiry or investigation, it shall be entitled to examine the
      books, records and premises of the Company or any Guarantor,
      personally or by agent or attorney at the cost of the Company or such
      Guarantor and shall not incur by reason of such inquiry or
      investigation any obligation or responsibility of any kind other than
      those imposed by or pursuant to this Indenture;

           (7) the Trustee may execute any of the trusts or powers
      hereunder or perform any duties hereunder either directly or by or
      through agents or attorneys and the Trustee shall not be responsible
      for any misconduct or negligence on the part of any agent or attorney
      appointed with due care by it hereunder;

           (8) the Trustee shall not be liable for any action taken,
      suffered or omitted by it in good faith and believed by it to be
      authorized or within the discretion or rights or powers conferred
      upon it by this Indenture; and

           (9) the Trustee shall not be deemed to have knowledge of the
      occurrence of a Change in Control or of the fact that the amount of
      Excess Proceeds equals or exceeds $20,000,000 until the Trustee
      receives written notice thereof as required by this Indenture.

       The Trustee shall not be required to expend or risk its own funds or
otherwise incur any financial liability in the performance of any of its
duties hereunder, or in the exercise of any of its rights or powers if it
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it.

       SECTION 603. Trustee Not Responsible for Recitals or Issuance of
Securities.

       The recitals contained herein, in the Securities and in the Guarantees,
except for the Trustee's certificates of authentication, shall be taken as the
statements of the Company and each Guarantor, and the Trustee assumes no
responsibility for their correctness.  The Trustee makes no representations as
to the validity or sufficiency of this Indenture, the Securities or the
Guarantees, except that the Trustee represents that it is duly authorized to
execute and deliver this Indenture, authenticate the Securities and perform
its obligations hereunder and that the statements made by it in a Statement of
Eligibility and Qualification on Form T-1 supplied to the Company are true and
accurate, subject to the qualifications set forth therein.  The Trustee shall
not be accountable for the use or application by the Company of Securities or
the proceeds thereof.

       SECTION 604. May Hold Securities.

       The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company or of the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to TIA
Sections 310(b) and 311, may otherwise deal with the Company with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar
or such other agent.

       SECTION 605. Money Held in Trust.

       Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law.  The Trustee shall be
under no liability for interest on any money received by it hereunder except
as otherwise agreed with the Company.

       SECTION 606. Compensation and Reimbursement.

       The Company and each Guarantor agree:

           (1) to pay to the Trustee from time to time reasonable
      compensation for all services rendered by it hereunder (which
      compensation shall not be limited by any provision of law in regard
      to the compensation of a trustee of an express trust);

           (2) except as otherwise expressly provided herein, to reimburse the
      Trustee upon its request for all reasonable expenses (including, without
      limitation, expenses incurred in connection with notices or other
      communications to the Holders as required hereunder), disbursements and
      advances incurred or made by the Trustee in accordance with any
      provision of this Indenture (including the reasonable compensation and
      the expenses and disbursements of its agents and counsel), except any
      such expense, disbursement or advance as may be attributable to its
      negligence or bad faith; and

           (3) to indemnify the Trustee, and its officers, directors,
      employees and agents, for, and to hold them harmless against, any
      loss, liability or expense incurred without negligence or bad faith
      on their part, arising out of or in connection with the acceptance or
      administration of this trust, including the costs and expenses of
      defending themselves against any claim or liability in connection
      with the exercise or performance of any of their powers or duties
      hereunder.

       The obligations of the Company and the Guarantors under this Section to
compensate the Trustee, to pay or reimburse the Trustee for expenses,
disbursements and advances and to indemnify and hold harmless the Trustee
shall constitute additional indebtedness hereunder and shall survive the
satisfaction and discharge of this Indenture.  As security for the performance
of such obligations of the Company and the Guarantors, the Trustee shall have
a claim prior to the Securities upon all property and funds held or collected
by the Trustee as such, except funds held in trust for the payment of
principal of (and premium, if any, on) or interest on particular Securities.

       SECTION 607. Corporate Trustee Required; Eligibility.

       There shall at all times be a Trustee hereunder which shall be eligible
to act as Trustee under TIA Section 310(a)(1) and shall have a combined
capital and surplus of at least $50,000,000.  If such corporation publishes
reports of condition at least annually, pursuant to law or to the requirements
of federal, state, territorial or District of Columbia supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published.  If
at any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect hereinafter specified in this Article.

       SECTION 608. Resignation and Removal; Appointment of Successor.

       (a) No resignation or removal of the Trustee and no appointment of a
successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 609.

       (b) The Trustee may resign at any time by giving written notice thereof
to the Company.  If the instrument of acceptance by a successor Trustee
required by Section 609 shall not have been delivered to the Trustee within 30
days after the giving of such notice of resignation, the resigning Trustee may
petition any court of competent jurisdiction for the appointment of a
successor Trustee.

       (c) The Trustee may be removed at any time by Act of the Holders of not
less than a majority in principal amount of the Outstanding Securities,
delivered to the Trustee and to the Company.

       (d) If at any time:

           (1) the Trustee shall fail to comply with the provisions of TIA
      Section 310(b) after written request therefor by the Company or by
      any Holder who has been a bona fide Holder of a Security for at least
      six months, or

           (2) the Trustee shall cease to be eligible under Section 607 and
      shall fail to resign after written request therefor by the Company or
      by any Holder who has been a bona fide Holder of a Security for at
      least six months, or

           (3) the Trustee shall become incapable of acting or shall be
      adjudged a bankrupt or insolvent or a receiver of the Trustee or of
      its property shall be appointed or any public officer shall take
      charge or control of the Trustee or of its property or affairs for
      the purpose of rehabilitation, conservation or liquidation,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee, or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself
and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

       (e) If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause,
the Company, by a Board Resolution, shall promptly appoint a successor
Trustee.  If, within one year after such resignation, removal or incapability,
or the occurrence of such vacancy, a successor Trustee shall be appointed by
Act of the Holders of a majority in principal amount of the Outstanding
Securities delivered to the Company and the retiring Trustee, the successor
Trustee so appointed shall, forthwith upon its acceptance of such appointment,
become the successor Trustee and supersede the successor Trustee appointed by
the Company.  If no successor Trustee shall have been so appointed by the
Company or the Holders and accepted appointment in the manner hereinafter
provided, any Holder who has been a bona fide Holder of a Security for at
least six months may, on behalf of himself and all others similarly situated,
petition any court of competent jurisdiction for the appointment of a
successor Trustee.

       (f) The Company shall give notice of each resignation and each removal
of the Trustee and each appointment of a successor Trustee to the Holders of
Securities in the manner provided for in Section 106.  Each notice shall
include the name of the successor Trustee and the address of its Corporate
Trust Office.

       SECTION 609. Acceptance of Appointment by Successor.

       Every successor Trustee appointed hereunder shall execute, acknowledge
and deliver to the Company and to the retiring Trustee an instrument accepting
such appointment, and thereupon the resignation or removal of the retiring
Trustee shall become effective and such successor Trustee, without any further
act, deed or conveyance, shall become vested with all the rights, powers,
trusts and duties of the retiring Trustee; but, on request of the Company or
the successor Trustee, such retiring Trustee shall, upon payment of its
charges, execute and deliver an instrument transferring to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall
duly assign, transfer and deliver to such successor Trustee all property and
money held by such retiring Trustee hereunder.  Upon request of any such
successor Trustee, the Company and each Guarantor shall execute any and all
instruments for more fully and certainly vesting in and confirming to such
successor Trustee all such rights, powers and trusts.

       No successor Trustee shall accept its appointment unless at the time of
such acceptance such successor Trustee shall be qualified and eligible under
this Article.

       SECTION 610. Merger, Conversion, Consolidation or Succession to
Business.

       Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on
the part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may
adopt such authentication and deliver the Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such
Securities; and in case at that time any of the Securities shall not have been
authenticated, any successor Trustee may authenticate such Securities either
in the name of any predecessor hereunder or in the name of the successor
Trustee; and in all such cases such certificates shall have the full force
which it is anywhere in the Securities or in this Indenture provided that the
certificate of the Trustee shall have; provided, however, that the right to
adopt the certificate of authentication of any predecessor Trustee or to
authenticate Securities in the name of any predecessor Trustee shall apply
only to its successor or successors by merger, conversion or consolidation.

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

       SECTION 701. Disclosure of Names and Addresses of Holders.

       Every Holder of Securities, by receiving and holding the same, agrees
with the Company, the Guarantors and the Trustee that none of the Company, the
Guarantors or the Trustee or any agent of any of them shall be held
accountable by reason of the disclosure of any such information as to the
names and addresses of the Holders in accordance with TIA Section 312,
regardless of the source from which such information was derived, and that the
Trustee shall not be held accountable by reason of mailing any material
pursuant to a request made under TIA Section 312(b).

       SECTION 702. Reports by Trustee.

       Within 60 days after May 15 of each year commencing with the first May
15 after the first issuance of Securities, the Trustee shall transmit to the
Holders, in the manner and to the extent provided in TIA Section 313(c), a
brief report dated as of such May 15 if required by TIA Section 313(a).

       SECTION 703. Reports by Company and the Guarantors.

       The Company and each Guarantor shall:

           (1) file with the Trustee, within 15 days after the Company or such
      Guarantor, as the case may be, is required to file the same with the
      Commission, copies of the annual reports and of the information,
      documents and other reports (or copies of such portions of any of the
      foregoing as the Commission may from time to time by rules and
      regulations prescribe) which the Company or such Guarantor may be
      required to file with the Commission pursuant to Section 13 or Section
      15(d) of the Exchange Act; or, if the Company or such Guarantor, as the
      case may be, is not required to file information, documents or reports
      pursuant to either of said Sections, then it shall file with the Trustee
      and the Commission, in accordance with rules and regulations prescribed
      from time to time by the Commission, such of the supplementary and
      periodic information, documents and reports which may be required
      pursuant to Section 13 of the Exchange Act in respect of a security
      listed and registered on a national securities exchange as may be
      prescribed from time to time in such rules and regulations;

           (2) file with the Trustee and the Commission, in accordance with
      rules and regulations prescribed from time to time by the Commission,
      such additional information, documents and reports with respect to
      compliance by the Company or such Guarantor with the conditions and
      covenants of this Indenture as may be required from time to time by
      such rules and regulations; and

           (3) transmit by mail to all Holders, in the manner and to the
      extent provided in TIA Section 313(c), within 30 days after the
      filing thereof with the Trustee, such summaries of any information,
      documents and reports required to be filed by the Company or such
      Guarantor pursuant to paragraphs (1) and (2) of this Section as may
      be required by rules and regulations prescribed from time to time by
      the Commission.

                                 ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

       SECTION 801. ADT Limited or Any Restricted Subsidiary May Consolidate,
etc. Only on Certain Terms.

       ADT Limited shall not consolidate or amalgamate with or merge with or
into any other Person or, directly or indirectly, sell, convey, assign,
transfer, lease or otherwise dispose of all or substantially all of its
properties and assets to any Person or group of affiliated Persons, or permit
any of the Restricted Subsidiaries to enter into any such transaction or
transactions if such transaction or transactions, in the aggregate, would
result in the sale, conveyance, assignment, transfer, lease or other
disposition of all or substantially all of the properties and assets of the
Company, ADT Limited and the other Restricted Subsidiaries on a consolidated
basis, to any Person or group of affiliated Persons, unless (and, in the case
of certain mergers, consolidations or amalgamations of ADT Limited with or
into any other Person, subject to Section 802 hereof):

           (1) either (A) the Company, ADT Limited or such other Restricted
      Subsidiary shall be the continuing corporation or (B) such Person (if
      other than the Company, ADT Limited or such other Restricted Subsidiary)
      formed by such consolidation or amalgamation or into which the Company,
      ADT Limited or such other Restricted Subsidiary is amalgamated or merged
      or the Person which acquires by sale, conveyance, assignment, transfer,
      lease or other disposition all or substantially all of the properties and
      assets of the Company, ADT Limited and the other Restricted Subsidiaries
      (the "Surviving Entity") shall be a corporation duly organized and
      validly existing under the laws of the United States of America, any
      state thereof or the District of Columbia except that in the case of ADT
      Limited or any Restricted Subsidiary (other than the Company or any
      Restricted Subsidiary of the Company), the Surviving Entity may be a
      corporation duly organized and validly existing under the laws of
      Bermuda, Canada, the United Kingdom or any political subdivision thereof
      and shall, in either case, expressly assume, by supplemental indenture
      to this Indenture, executed and delivered by the Trustee, in form
      satisfactory to the Trustee, all the obligations of the Company, ADT
      Limited or such other Restricted Subsidiary under the Securities and
      this Indenture and this Indenture shall remain in full force and effect;

           (2) immediately before and immediately after giving effect to such
      transaction no Default or Event of Default shall have occurred and be
      continuing (and treating any Indebtedness that becomes an obligation of
      the Company, ADT Limited or any other Restricted Subsidiary in
      connection with or as a result of such transaction as having been
      incurred at the time of such transaction);

           (3) immediately after giving effect to such transaction, the
      Consolidated Net Worth of ADT Limited, if the Company, ADT Limited or
      any other Restricted Subsidiary is the continuing corporation, or the
      Surviving Entity is at least equal to the Consolidated Net Worth of ADT
      Limited immediately before such transaction;

           (4) each Guarantor, unless it is the other party to the
      transactions described above, shall have by supplemental indenture
      confirmed that its Guarantee shall apply to such Person's obligations
      under the Securities; and

           (5) the Company and ADT Limited shall have delivered, or caused
      to be delivered, to the Trustee an Officers' Certificate and an
      Opinion of Counsel, each stating that this Section 801 has been
      complied with and that all conditions precedent herein provided for
      relating to such transaction have been satisfied.

Notwithstanding anything contained in this Section 801, the Company and any
Surviving Entity of the Company shall at all times be a corporation duly
organized and validly existing under the laws of the United States of America,
any state thereof or the District of Columbia.

       SECTION 802. ADT Limited May Amalgamate, Redomesticate, etc., Only on
Certain Terms.

       ADT Limited may (a) amalgamate with or merge with or into a newly-formed
corporation having no assets or liabilities, which amalgamation or merger
shall be solely for the purpose of reincorporating ADT Limited under the laws
of Canada, the United Kingdom or other political subdivision thereof or the
United States of America, any state thereof or the District of Columbia or (b)
continue, redomesticate or otherwise become subject to the laws of a
jurisdiction other than Bermuda, to the same extent as if it had been
incorporated in such jurisdiction, provided that in the case of clauses (a)
and (b) above:

           (1) the Surviving Entity shall be a corporation duly organized and
      validly existing under the laws of Canada, the United Kingdom or
      political subdivision thereof or the United States of America, any state
      thereof or the District of Columbia and shall, in either case, expressly
      assume, by supplemental indenture to this Indenture, executed and
      delivered by the Trustee, in form satisfactory to the Trustee, all the
      obligations of ADT Limited under the Securities and this Indenture and
      this Indenture shall remain in full force and effect;

           (2) immediately before and immediately after giving effect to such
      transaction, no Default or Event of Default shall have occurred and be
      continuing (and treating any Indebtedness that becomes an obligation of
      the Company, ADT Limited or any other Restricted Subsidiary in
      connection with or as a result of such transaction as having been
      incurred at the time of such transaction);

           (3) immediately after giving effect to such transaction, the
      Consolidated Net Worth of the Surviving Entity is at least equal to the
      Consolidated Net Worth of ADT Limited immediately before such
      transaction less customary and reasonable transaction costs;

           (4) each Guarantor, unless it is the other party to the transactions
      described above, shall have by supplemental indenture confirmed that its
      Guarantee shall apply to such Person's obligations under the Securities;
      and

           (5) the Surviving Entity shall have delivered, or caused to be
      delivered, to the Trustee an Officers' Certificate and an Opinion of
      Counsel, each stating that this Section 802 has been complied with and
      that all conditions precedent herein provided for relating to such
      transaction have been satisfied.

       SECTION 803. Successor Substituted.

       Upon any consolidation or amalgamation of ADT Limited or consolidation
of the Company or any Guarantor with or merger of the Company or any Guarantor
with or into any other corporation, or any continuance or redomestication of
ADT Limited in a jurisdiction other than Bermuda, or upon any conveyance,
transfer or lease of all or substantially all of the properties and assets of
the Company, ADT Limited and the other Restricted Subsidiaries to any Person in
accordance with Section 801 or 802, the successor Person formed by such
consolidation, amalgamation, continuance or redomestication or into which the
Company or such Guarantor is merged or to which such conveyance, transfer or
lease is made shall succeed to, and be substituted for, and may exercise every
right and power of, the Company or such Guarantor under this Indenture, the
Securities and the Guarantees, as the case may be, with the same effect as if
such successor Person had been named as the Company or such Guarantor, as the
case may be, herein, in the Securities or in the Guarantees, as the case may
be, and in the event of any such conveyance or transfer, the Company or such
Guarantor (which terms shall for this purpose mean the Person named as the
"Company" in the first paragraph of this Indenture, any Guarantor on the date
hereof or any successor Person which shall theretofore become such in the
manner described in Section 801 or 802), except in the case of a lease, shall
be discharged of all obligations and covenants under this Indenture, the
Securities and the Guarantees, as the case may be, and may be dissolved and
liquidated.

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

       SECTION 901. Supplemental Indentures Without Consent of Holders.

       Without the consent of any Holders, the Company and the Guarantors,
when each is authorized by a Board Resolution adopted by their respective
boards of directors or any duly authorized committee thereof, and the Trustee,
at any time and from time to time, may enter into one or more indentures
supplemental hereto, or agreements or other instruments with respect to the
Guarantees, in form satisfactory to the Trustee, for any of the following
purposes:

           (1) to evidence the succession of another Person to the Company
      or any Guarantor and the assumption by any such successor of the
      covenants of the Company or any Guarantor contained herein, in the
      Securities or in the Guarantees; or

           (2) to add to the covenants of the Company or any Guarantor for
      the benefit of the Holders or to surrender any right or power herein
      conferred upon the Company or any Guarantor; or

           (3) to add any additional Events of Default; or

           (4) to evidence and provide for the acceptance of appointment
      hereunder by a successor Trustee pursuant to the requirements of
      Section 609; or

           (5)  to cure any ambiguity, to correct or supplement any provision
      herein which may be inconsistent with any other provision herein, or to
      make any other provisions with respect to matters or questions arising
      under this Indenture; provided that such action shall not adversely
      affect the interests of the Holders in any material respect; or

           (6) to add a guarantor of the Guaranteed Obligations; or

           (7) to secure the Securities pursuant to any relevant provision
      under the Indenture.

       SECTION 902. Supplemental Indentures with Consent of Holders.

       With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Securities, by Act of said Holders
delivered to the Company and the Trustee, the Company and the Guarantors, when
each is authorized by a Board Resolution, and the Trustee may enter into an
indenture or indentures supplemental hereto for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of modifying in any manner the rights of the Holders
under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected
thereby:

           (1) change the Stated Maturity of the principal of, or any
      installment of interest on, any Security, or reduce the principal
      amount thereof or the rate of interest thereon, or change the coin or
      currency in which any Security or any premium or the interest thereon
      is payable, or impair the right to institute suit for the enforcement
      of any such payment after the Stated Maturity thereof, or

           (2) reduce the percentage in principal amount of the Outstanding
      Securities, the consent of whose Holders is required for any such
      supplemental indenture, or the consent of whose Holders is required for
      any waiver of compliance with certain provisions of this Indenture or
      certain defaults hereunder and their consequences provided for in this
      Indenture, or

           (3) modify any of the provisions of this Section or Sections 513
      and 1021, except to increase any such percentage or to provide that
      certain other provisions of this Indenture cannot be modified or
      waived without the consent of the Holder of each Outstanding Security
      affected thereby, or

           (4) modify any of the provisions of this Indenture relating to a
      Change in Control in a manner adverse to the Holders of the
      Outstanding Securities.

       It shall not be necessary for any Act of Holders under this Section to
approve the particular form of any proposed supplemental indenture, but it
shall be sufficient if such Act shall approve the substance thereof.

       SECTION 903. Execution of Supplemental Indentures.

       In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby
of the trusts created by this Indenture, the Trustee shall be entitled to
receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture.  The Trustee may, but shall not be obligated to,
enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

       SECTION 904. Effect of Supplemental Indentures.

       Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Securities theretofore or thereafter authenticated and
delivered hereunder shall be bound thereby.

       SECTION 905. Conformity with Trust Indenture Act.

       Every supplemental indenture executed pursuant to the Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

       SECTION 906. Reference in Securities to Supplemental Indentures.

       Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company shall so
determine, new Securities so modified as to conform, in the opinion of the
Trustee and the Company, to any such supplemental indenture may be prepared
and executed by the Company and authenticated and delivered by the Trustee in
exchange for Outstanding Securities.

       SECTION 907. Notice of Supplemental Indentures.

       Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Security
affected, in the manner provided for in Section 106, setting forth in general
terms the substance of such supplemental indenture.

                                  ARTICLE TEN

                                   COVENANTS

       SECTION 1001. Payment of Principal, Premium, if any, and Interest.

       The Company covenants and agrees for the benefit of the Holders that it
will duly and punctually pay the principal of (and premium, if any, on) and
interest on the Securities in accordance with the terms of the Securities and
this Indenture.

       SECTION 1002. Maintenance of Office or Agency.

       The Company will maintain in The City of New York, an office or agency
where Securities may be presented or surrendered for payment, where Securities
may be surrendered for registration of transfer or exchange and where notices
and demands to or upon the Company in respect of the Securities and this
Indenture may be served.  The Corporate Trust Office of the Trustee shall be
such office or agency of the Company, unless the Company shall designate and
maintain some other office or agency for one or more of such purposes.  The
Company will give prompt written notice to the Trustee of any change in the
location of any such office or agency.  If at any time the Company shall fail
to maintain any such required office or agency or shall fail to furnish the
Trustee with the address thereof, such presentations, surrenders, notices and
demands may be made or served at the Corporate Trust Office of the Trustee,
and the Company hereby appoints the Trustee as its agent to receive all such
presentations, surrenders, notices and demands.

       The Company may also from time to time designate one or more other
offices or agencies (in or outside of The City of New York) where the
Securities may be presented or surrendered for any or all such purposes and
may from time to time rescind any such designation; provided, however, that no
such designation or rescission shall in any manner relieve the Company of its
obligation to maintain an office or agency in The City of New York for such
purposes.  The Company will give prompt written notice to the Trustee of any
such designation or rescission and any change in the location of any such
other office or agency.

       SECTION 1003. Money for Security Payments to Be Held in Trust.

       If the Company shall at any time act as its own Paying Agent, it will,
on or before each due date of the principal of (and premium, if any, on) or
interest on any of the Securities, segregate and hold in trust for the benefit
of the Persons entitled thereto a sum sufficient to pay the principal (and
premium, if any) or interest so becoming due until such sums shall be paid to
such Persons or otherwise disposed of as herein provided and will promptly
notify the Trustee of its action or failure so to act.

       Whenever the Company shall have one or more Paying Agents for the
Securities, it will, on or before each due date of the principal of (and
premium, if any, on), or interest on, any Securities, deposit with a Paying
Agent a sum sufficient to pay the principal (and premium, if any) or interest
so becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such Paying Agent
is the Trustee) the Company will promptly notify the Trustee of such action or
any failure so to act.

       The Company will cause each Paying Agent (other than the Trustee) to
execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee, subject to the provisions of this Section, that
such Paying Agent will:

           (1) hold all sums held by it for the payment of the principal of
      (and premium, if any, on) or interest on Securities in trust for the
      benefit of the Persons entitled thereto until such sums shall be paid
      to such Persons or otherwise disposed of as herein provided;

           (2) give the Trustee notice of any default by the Company or any
      Guarantor in the making of any payment of principal (and premium, if
      any) or interest; and

           (3) at any time during the continuance of any such default, upon
      the written request of the Trustee, forthwith pay to the Trustee all
      sums so held in trust by such Paying Agent.

       The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held
in trust by the Company or such Paying Agent, such sums to be held by the
Trustee upon the same trusts as those upon which such sums were held by the
Company or such Paying Agent; and, upon such payment by any Paying Agent to
the Trustee, such Paying Agent shall be released from all further liability
with respect to such sums.

       Any money deposited with the Trustee or any Paying Agent, or then held
by the Company, in trust for the payment of the principal of (and premium, if
any, on) or interest on any Security and remaining unclaimed for two years
after such principal (and premium, if any) or interest has become due and
payable shall be paid to the Company on Company Request, or (if then held by
the Company) shall be discharged from such trust; and the Holder of such
Security shall thereafter, as an unsecured general creditor, look only to the
Company for payment thereof, and all liability of the Trustee or such Paying
Agent with respect to such trust money, and all liability of the Company as
trustee thereof, shall thereupon cease; provided, however, that the Trustee or
such Paying Agent, before being required to make any such repayment, may at the
expense of the Company cause to be published once, in a newspaper published in
the English language, customarily published on each Business Day and of
general circulation in the Borough of Manhattan, The City of New York, notice
that such money remains unclaimed and that, after a date specified therein,
which shall not be less than 30 days from the date of such publication, any
unclaimed balance of such money then remaining will be repaid to the Company.

       SECTION 1004. Corporate Existence.

       Subject to Article Eight, the Company and ADT Limited will do or cause
to be done all things necessary to preserve and keep in full force and effect
the corporate existence, rights (charter and statutory) and franchises of the
Company, ADT Limited and each other Restricted Subsidiary; provided, however,
that the Company and ADT Limited shall not be required to preserve any such
right or franchise if the Board of Directors shall determine that the
preservation thereof is no longer desirable in the conduct of the business of
the Company, ADT Limited and the other Restricted Subsidiaries as a whole and
that the loss thereof is not disadvantageous in any material respect to the
Holders.

       SECTION 1005. Payment of Taxes and Other Claims.

       The Company and ADT Limited will pay or discharge or cause to be paid or
discharged, before the same shall become delinquent, (a) all taxes,
assessments and governmental charges levied or imposed upon the Company, ADT
Limited or any other Subsidiary or upon the income, profits or property of the
Company, ADT Limited or any other Subsidiary and (b) all lawful claims for
labor, materials and supplies, which, if unpaid, might by law become a lien
upon the property of the Company, ADT Limited or any other Restricted
Subsidiary; provided, however, that the Company and ADT Limited shall not be
required to pay or discharge or cause to be paid or discharged any such tax,
assessment, charge or claim whose amount, applicability or validity is being
contested in good faith by appropriate proceedings.

       SECTION 1006. Maintenance of Properties.

       The Company and ADT Limited will cause all properties owned by the
Company, ADT Limited or any other Restricted Subsidiary or used or held for
use in the conduct of the business of the Company, ADT Limited or any other
Restricted Subsidiary to be maintained and kept in good condition, repair and
working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and
improvements thereof, all as in the judgment of the Company and ADT Limited
may be necessary so that the business carried on in connection therewith may
be properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company and ADT Limited from
discontinuing the maintenance of any of such properties if such discontinuance
is, in the judgment of the Company and ADT Limited, desirable in the conduct
of the business of the Company, ADT Limited or any other Restricted Subsidiary
and not disadvantageous in any material respect to the Holders.

       SECTION 1007. Insurance.

       The Company and ADT Limited will at all times keep all of the
properties of the Company, ADT Limited and the other Restricted Subsidiaries
which are of an insurable nature insured with insurers, believed by the
Company and ADT Limited to be responsible, against loss or damage to the
extent that property of similar character is usually so insured by corporations
similarly situated and owning like properties.

       SECTION 1008. Statement by Officers As to Default.

       (a) Each of ADT Limited and the Company will deliver to the Trustee,
within 120 days after the end of each fiscal year, a brief certificate from
its principal executive officer, principal financial officer or principal
accounting officer as to his or her knowledge of compliance by the Company,
ADT Limited and the other Subsidiaries with all conditions and covenants
applicable to the Company, ADT Limited and the other Subsidiaries under this
Indenture.  For purposes of this Section 1008(a), such compliance shall be
determined without regard to any period of grace or requirement of notice
under this Indenture.

       (b) When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the holder of any other evidence of
Indebtedness of the Company, ADT Limited or any other Restricted Subsidiary
gives any notice or takes any other action with respect to a claimed default
(other than with respect to Indebtedness in the principal amount of less than
$15,000,000), the Company or ADT Limited shall deliver to the Trustee by
registered or certified mail or by telegram, telex or facsimile transmission
an Officers' Certificate specifying such event, notice or other action within
five Business Days of its occurrence.

       SECTION 1009. Provision of Financial Statements.

       Whether or not ADT Limited is subject to Section 13(a) or 15(d) of the
Exchange Act, ADT Limited will, to the extent permitted under the Exchange
Act, file with the Commission the annual reports, quarterly reports and other
documents that ADT Limited would have been required to file with the
Commission pursuant to such Sections 13(a) or 15(d) if ADT Limited were so
subject, such documents to be filed with the Commission on or prior to the
respective dates (the "Required Filing Dates") by which ADT Limited would have
been required so to file such documents if ADT Limited were so subject.  The
Company will also in any event (x) within 15 days of each Required Filing Date
(i) transmit by mail to all Holders, as their names and addresses appear in
the Security Register, without cost to such Holders and (ii) file with the
Trustee copies of the annual reports, quarterly reports and other documents
that ADT Limited would have been required to file with the Commission pursuant
to Section 13(a) or 15(d) of the Exchange Act if ADT Limited were subject to
such Sections and (y) if filing such documents by ADT Limited with the
Commission is not permitted under the Exchange Act, promptly upon written
request, authorize the Trustee to provide a copy of such documents to a
prospective holder of the Securities at the Company's cost.

       SECTION 1010. Purchase of Securities upon Change in Control.

       (a) Upon the occurrence of a Change in Control, each Holder of
Securities shall have the right to require the Company to repurchase such
Holder's Securities in whole or in part in integral multiples of $1,000, at a
purchase price (the "Change in Control Purchase Price") in cash in an amount
equal to 101% of the principal amount of such Securities plus accrued and
unpaid interest, if any, to the date of purchase, in accordance with the
procedures set forth in this Section 1010 (a "Change in Control Offer").

       (b) Within 30 days following any Change in Control, the Company shall
send by first-class mail, postage prepaid, to the Trustee and to each Holder
of the Securities, at his address appearing in the Security Register, a notice
stating:

           (1) that a Change in Control has occurred and that such Holder
      has the right to require the Company to repurchase such Holder's
      Securities at the Change in Control Purchase Price;

           (2) the circumstances and relevant facts regarding such Change in
      Control (including but not limited to information with respect to pro
      forma historical income, cash flow and capitalization after giving
      effect to such Change in Control);

           (3) a purchase date (the "Purchase Date") which shall be no earlier
      than 45 days nor later than 60 days from the date such notice is mailed
      or such later date as may be necessary for the Company to comply with
      the requirements under the Exchange Act;

           (4) that any Security not tendered will continue to accrue
      interest; and

           (5) the instructions a Holder must follow in order to have its
      Securities repurchased in accordance with paragraph (d) of this Section.

       (c) Holders electing to have Securities purchased will be required to
surrender such Securities to the Company at the address specified in the
notice at least five Business Days prior to the Purchase Date.  Holders will
be entitled to withdraw their election if the Company receives, not later than
five Business Days prior to the Purchase Date, a telegram, telex, facsimile
transmission or letter setting forth the name of the Holder, the principal
amount of the Securities delivered for purchase by the Holder as to which his
election is to be withdrawn and a statement that such Holder is withdrawing
his election to have such Securities purchased.  Holders whose Securities are
purchased only in part will be issued new Securities equal in principal amount
to the unpurchased portion of the Securities surrendered.

       (d) The Company will comply with the applicable tender offer rules,
including Rule 14e-1 under the Exchange Act, and any other applicable
securities laws or regulations in connection with a Change in Control Offer.

       [SECTIONS 1011-1020 intentionally omitted.]

       SECTION 1021. Waiver of Certain Covenants.

       The Company and each Guarantor may omit in any particular instance to
comply with any term, provision or condition set forth in Section 804,
Sections 1007 through 1009, inclusive, or Sections 1011 through 1020, if
before or after the time for such compliance the Holders of at least a
majority in principal amount of the Outstanding Securities, by Act of such
Holders, waive such compliance in such instance with such term, provision or
condition, but no such waiver shall extend to or affect such term, provision
or condition except to the extent so expressly waived, and, until such waiver
shall become effective, the obligations of the Company and each Guarantor and
the duties of the Trustee in respect of any such term, provision or condition
shall remain in full force and effect.

                                ARTICLE ELEVEN

                      DEFEASANCE AND COVENANT DEFEASANCE

       SECTION 1101. Company's Option to Effect Defeasance or Covenant
Defeasance.

       The Company may, at its option by Board Resolution, at any time, with
respect to the Securities, elect to have either Section 1102 or Section 1103
be applied to all Outstanding Securities upon compliance with the conditions
set forth below in this Article Eleven.

       SECTION 1102. Defeasance and Discharge.

       Upon the Company's exercise under Section 1101 of the option applicable
to this Section 1102, the Company shall be deemed to have been discharged from
its obligations with respect to all Outstanding Securities on the date the
conditions set forth in Section 1104 are satisfied (hereinafter,
"defeasance").  For this purpose, such defeasance means that the Company shall
be deemed to have paid and discharged the entire indebtedness represented by
the Outstanding Securities, which shall thereafter be deemed to be
"Outstanding" only for the purposes of Section 1105 and the other Sections of
this Indenture referred to in (A) and (B) below, and to have satisfied all its
other obligations under such Securities and this Indenture insofar as such
Securities are concerned (and the Trustee, at the expense of the Company,
shall execute proper instruments acknowledging the same), except for the
following which shall survive until otherwise terminated or discharged
hereunder:  (A) the rights of Holders of Outstanding Securities to receive,
solely from the trust fund described in Section 1104 and as more fully set
forth in such Section, payments in respect of the principal of (and premium,
if any, on) and interest on such Securities when such payments are due, (B)
the Company's obligations with respect to such Securities under Sections 304,
305, 306, 1002 and 1003, (C) the rights, powers, trusts, duties and immunities
of the Trustee hereunder and (D) this Article Eleven.  Subject to compliance
with this Article Eleven, the Company may exercise its option under this
Section 1102 notwithstanding the prior exercise of its option under Section
1103 with respect to the Securities.

       SECTION 1103. Covenant Defeasance.

       Upon the Company's exercise under Section 1101 of the option applicable
to this Section 1103, the Company and the Guarantors shall be released from
their obligations under any covenant contained in Section 801(3), Section
802(3) and in Sections 1007 through 1010 with respect to the Outstanding
Securities on and after the date the conditions set forth below are satisfied
(hereinafter, "covenant defeasance"), and the Securities shall thereafter be
deemed not to be "Outstanding" for the purposes of any direction, waiver,
consent or declaration or Act of Holders (and the consequences of any thereof)
in connection with such covenants, but shall continue to be deemed
"Outstanding" for all other purposes hereunder.  For this purpose, such
covenant defeasance means that, with respect to the Outstanding Securities,
the Company and the Guarantors may omit to comply with and shall have no
liability in respect of any term, condition or limitation set forth in any
such covenant, whether directly or indirectly, by reason of any reference
elsewhere herein to any such covenant or by reason of any reference in any such
covenant to any other provision herein or in any other document and such
omission to comply shall not constitute a Default or an Event of Default under
Section 501(3), but, except as specified above, the remainder of this
Indenture and such Securities shall be unaffected thereby.

       SECTION 1104. Conditions to Defeasance or Covenant Defeasance.

       The following shall be the conditions to application of either Section
1102 or Section 1103 to the Outstanding Securities:

           (1) The Company shall irrevocably have deposited or caused to be
      deposited with the Trustee (or another trustee satisfying the
      requirements of Section 607 who shall agree to comply with the
      provisions of this Article Eleven applicable to it) as trust funds in
      trust for the purpose of making the following payments, specifically
      pledged as security for, and dedicated solely to, the benefit of the
      Holders of such Securities, (A) cash in U.S. dollars in an amount, or
      (B) U.S. Government Obligations which through the scheduled payment of
      principal and interest in respect thereof in accordance with their terms
      will provide, not later than one day before the due date of any payment,
      money in an amount, or (C) a combination thereof, sufficient, in the
      opinion of a nationally recognized firm of independent public
      accountants expressed in a written certification thereof delivered to the
      Trustee, to pay and discharge, and which shall be applied by the Trustee
      (or other qualifying trustee) to pay and discharge, the principal of
      (and premium, if any, on) and interest on the Outstanding Securities on
      the Stated Maturity of such principal (and premium, if any) or
      installment of interest on the day on which such payments are due and
      payable in accordance with the terms of this Indenture and of such
      Securities; provided that the Trustee shall have been irrevocably
      instructed to apply such money or the proceeds of such U.S. Government
      Obligations to said payments with respect to the Securities.

           (2)  No Default or Event of Default with respect to the
      Securities shall have occurred and be continuing on the date of such
      deposit or, insofar as paragraphs (7) and (8) of Section 501 hereof
      are concerned, at any time during the period ending on the 91st or
      367th day, as the case may be, after the date of such deposit (it
      being understood that this condition shall not be deemed satisfied
      until the expiration of such period).

           (3)  Such defeasance or covenant defeasance shall not result in a
      breach or violation of, or constitute a default under, this Indenture or
      any other material agreement or instrument to which the Company or any
      Guarantor is a party or by which the Company or any Guarantor is bound.

           (4)  In the case of an election under Section 1102, the Company
      shall have delivered to the Trustee an Opinion of Counsel stating
      that (x) the Company has received from, or there has been published
      by, the Internal Revenue Service a ruling, or (y) since the date
      hereof, there has been a change in the applicable federal income tax
      law, in either case to the effect that, and based thereon such
      opinion shall confirm that, the Holders of the Outstanding Securities
      will not recognize income, gain or loss for federal income tax
      purposes as a result of such defeasance and will be subject to
      federal income tax on the same amounts, in the same manner and at the
      same times as would have been the case if such defeasance had not
      occurred.

           (5)  In the case of an election under Section 1103, the Company
      shall have delivered to the Trustee an Opinion of Counsel to the
      effect that the Holders of the Outstanding Securities will not
      recognize income, gain or loss for federal income tax purposes as a
      result of such covenant defeasance and will be subject to federal
      income tax on the same amounts, in the same manner and at the same
      times as would have been the case if such covenant defeasance had not
      occurred.

           (6) The Company shall have delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that all conditions
      precedent provided for relating to either the defeasance under Section
      1102 or the covenant defeasance under Section 1103 (as the case may be)
      have been complied with.

           (7) The Company shall have delivered to the Trustee an Opinion of
      Counsel stating that after the 91st day following the deposit, the trust
      funds will not be subject to the effect of any applicable bankruptcy,
      insolvency, reorganization or similar laws affecting creditors' rights
      generally; provided, however, that if counsel determines that it cannot
      deliver such opinion as a matter of law, the Company shall have
      delivered to the Trustee an Opinion of Counsel to the effect that after
      the 367th day following the deposit, the trust funds will not be subject
      to the effect of any applicable bankruptcy, insolvency, reorganization
      or similar laws affecting creditors' rights generally.

           (8) The Company shall have delivered to the Trustee an Officers'
      Certificate stating that the deposit was not made by the Company with
      the intent of preferring the holders of the Securities or the Guarantees
      endorsed thereon over the other creditors of the Company or any
      Guarantor or with the intent of hindering, delaying or defrauding
      creditors of the Company or any Guarantor.

Reference in paragraph (2) above to the number of days shall mean the 91st day
if the Opinion of Counsel referred to in paragraph (7) above refers to the
91st day and shall mean the 367th day if the Opinion of Counsel referred to in
paragraph (7) above refers to the 367th day.

       SECTION 1105. Deposited Money and U.S. Government Obligations to Be Held
in Trust; Other Miscellaneous Provisions.

       Subject to the provisions of the last paragraph of Section 1003, all
money and U.S. Government Obligations (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee--collectively for
purposes of this Section 1105, the "Trustee") pursuant to Section 1104 in
respect of the Outstanding Securities shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of such Securities of all sums due and to become due
thereon in respect of principal (and premium, if any) and interest, but such
money need not be segregated from other funds except to the extent required by
law.

       The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the U.S. Governmental Obligations
deposited pursuant to Section 1104 or the principal and interest received in
respect thereof other than any such tax, fee or other charge which by law is
for the account of the Holders of the Outstanding Securities.

       Anything in this Article Eleven to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1104 which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article.

       SECTION 1106. Reinstatement.

       If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1105 by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and each Guarantor's obligations under this
Indenture, the Securities and the Guarantees shall be revived and reinstated
as though no deposit had occurred pursuant to Section 1102 or 1103, as the case
may be, until such time as the Trustee or Paying Agent is permitted to apply
all such money in accordance with Section 1105; provided, however, that if the
Company makes any payment of principal of (or premium, if any, on) or interest
on any Security following the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
such payment from the money held by the Trustee or Paying Agent.

                                ARTICLE TWELVE

                                   GUARANTEE

       SECTION 1201. Guarantee.

       Subject to the provisions of this Article Twelve, each Guarantor hereby
irrevocably and unconditionally guarantees, jointly and severally, on a senior
basis to each Holder and to the Trustee, on behalf of the Holders, (i) the due
and punctual payment of the principal of and interest on each Security, when
and as the same shall become due and payable, whether at Stated Maturity or
purchase upon Change in Control, and whether by declaration of acceleration,
Change in Control, call for purchase or otherwise, the due and punctual
payment of interest on the overdue principal of and interest, if any, on the
Securities, to the extent lawful, and the due and punctual performance of all
other obligations of the Company to the Holders or the Trustee all in
accordance with the terms of such Security and this Indenture and (ii) in the
case of any extension of time of payment or renewal of any Securities or any
of such other obligations, that the same will be promptly paid in full when
due or performed in accordance with the terms of the extension or renewal, at
Stated Maturity or purchase upon Change in Control, and whether by declaration
of acceleration, Change in Control, call for purchase or otherwise (the
obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  Without limiting the generality of the foregoing, each
Guarantor's liability shall extend to all amounts that constitute part of the
Guaranteed Obligations and would be owed by the Company to the Holders or the
Trustee under the Securities and the Indenture but for the fact that they are
unenforceable or not allowable due to the existence of a bankruptcy,
reorganization or similar proceeding involving the Company.  The Guarantors
hereby agree that their obligations hereunder shall be absolute and
unconditional, irrespective of, and shall be unaffected by, any invalidity,
irregularity or unenforceability of any such Security or this Indenture, any
failure to enforce the provisions of any such Security or this Indenture, any
waiver, modification or indulgence granted to the Company with respect
thereto, by any Guaranteed Party or any other circumstances which may
otherwise constitute a legal or equitable discharge or defense of the Company
or a surety or guarantor.  The Guarantors hereby waive diligence, presentment,
filing of claims with a court in the event of merger or bankruptcy of the
Company, any right to require a proceeding first against the Company, the
benefit of discussion, protest or notice with respect to any such Security or
the Indebtedness evidenced thereby and all demands whatsoever (except as
specified above), and covenant that this Guarantee will not be discharged as
to any such Security except by payment in full of the Guaranteed Obligations
and as provided in Sections 401, 1102 and 1207.  Each Guarantor further agrees
that, as between such Guarantor and the Guaranteed Parties, (i) the maturity
of the Guaranteed Obligations may be accelerated as provided in Article Five
for the purposes of this Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the Guaranteed
Obligations, and (ii) in the event of any declaration of acceleration of such
Guaranteed Obligations as provided in Article Five, such Guaranteed
Obligations (whether or not due and payable) shall forthwith become due and
payable by each Guarantor for the purpose of this Guarantee.  In addition,
without limiting the foregoing provisions, upon the effectiveness of an
acceleration under Article Five, the Trustee shall promptly make a demand for
payment on the Securities under each Guarantee provided for in this Article
Twelve and not discharged.

       Each Guarantor hereby irrevocably waives any claim or other rights that
it may now or hereafter acquire against the Company that arise from the
existence, payment, performance or enforcement of such Guarantor's obligations
under this Indenture, or any other document or instrument including, without
limitation, any right of subrogation, reimbursement, exoneration,
contribution, indemnification, any right to participate in any claim or remedy
of the Guaranteed Parties against the Company, whether or not such claim,
remedy or right arises in equity, or under contract, statute or common law,
including, without limitation, the right to take or receive from the Company,
directly or indirectly, in cash or other property or in any other manner,
payment or security on account of such claim or other rights.  If any amount
shall be paid to any Guarantor in violation of the preceding sentence and the
Guaranteed Obligations shall not have been paid in full, such amount shall be
deemed to have been paid to such Guarantor for the benefit of, and held in
trust for the benefit of, the Guaranteed Parties, and shall forthwith be paid
to the Trustee.  Each Guarantor acknowledges that it will receive direct and
indirect benefits from the issuance of the Securities and that the waiver set
forth in this paragraph is knowingly made in contemplation of such benefits.

       SECTION 1202. Obligations of the Guarantors Unconditional.

       Nothing contained in this Article Twelve, elsewhere in this Indenture
or in any Security or in the Guarantee is intended to or shall impair, as
between the Guarantors and the Holders, the obligation of the Guarantors,
which obligations are independent of the obligations of the Company under the
Securities and this Indenture and are absolute and unconditional, to pay to
the Holders the Guaranteed Obligations as and when the same shall become due
and payable in accordance with the provisions of this Guarantee and this
Indenture, or is intended to or shall affect the relative rights of the
Holders and creditors of the Guarantors, nor shall anything herein or therein
prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable law upon Default under this Indenture.  Each payment
to be made by any Guarantor hereunder in respect of the Guaranteed Obligations
shall be payable in the currency or currencies in which such Guaranteed
Obligations are denominated.

       SECTION 1203. Execution of Guarantee.

       To evidence its obligations under this Article Twelve, each Guarantor
hereby agrees to execute a guarantee substantially in the form set forth in
Section 205 hereof, to be endorsed on each Security authenticated and
delivered by the Trustee and that this Indenture shall be executed on behalf
of the Guarantors by their respective Chairmen of the Board, Presidents or
Vice Presidents, under their corporate seals reproduced thereon attested by
their respective Secretaries or Assistant Secretaries.  The signature of any
of these officers on the Securities may be manual or facsimile.  Each
Guarantor hereby agrees that its Guarantee set forth in this Article Twelve
shall remain in full force and effect notwithstanding any failure to endorse
such Guarantee on any Security.

       If an officer whose signature is on this Indenture no longer holds that
office at the time the Trustee authenticates a Security on which this
Guarantee is endorsed, the Guarantee shall be valid nevertheless.

       SECTION 1204. Ranking of Guarantee.

       Each Guarantor covenants and agrees, and each Holder of a Security by
his acceptance thereof likewise covenants and agrees, that each Guarantee will
be an unsecured senior obligation of the Guarantor issuing such Guarantee,
ranking pari passu in right of payment with all other existing and future
Guarantor Senior Indebtedness.

       SECTION 1205. Withholding.

       All payments made by a Guarantor with respect to the Guarantees will be
made without withholding or deduction for, or on account of, any present or
future taxes, duties, assessments or governmental charges of whatever nature
imposed or levied by or on behalf of Bermuda or any other country (other than
the United States) or any political subdivision thereof or any authority
therein or thereof, having power to tax, unless the withholding or deduction
of such taxes, duties, assessments or governmental charges is then required by
law.  In the event that Bermuda or any other country (other than the United
States) or any political subdivision thereof or any authority therein or
thereof, imposes any such withholding or deduction on (i) any payments made by
a Guarantor with respect to the Guarantees or (ii) any net proceeds on the
sale to or exchange with any Guarantor of the Securities, such Guarantor will
pay such additional amounts (the "Additional Amounts") as may be necessary in
order that the net amounts received in respect of such payments or sale or
exchange by the Holders of the Securities or the Trustee, as the case may be,
after such withholding or deduction shall equal the respective amounts that
would have been received in respect of such payments or sale or exchange in
the absence of such withholding or deduction; except that no such Additional
Amounts shall be payable with respect to any Security held by or on behalf of
a holder who is liable for such taxes, duties, assessments or governmental
charges in respect of such Security by reason of his being a citizen or
resident of, or carrying on a business in, Bermuda or the country of residence
of any Guarantor.  Notwithstanding the foregoing, a Guarantor making a payment
on the Securities pursuant to the Guarantee shall not be required to pay any
Additional Amounts if (i) the beneficial holder of a Security receives by
certified mail (evidenced by a return receipt signed by such beneficial
holder) (A) written notice from such Guarantor no less than 60 days in advance
of making such payment and (B) the appropriate forms or instructions necessary
to enable such beneficial holder to certify or document the availability of an
exemption from, or reduction of, the withholding or deduction of such taxes
under applicable law, which such instructions shall clearly specify that
Additional Amounts hereunder may not be paid if such forms are not completed
by such beneficial holder, and (ii) the Guarantor that would otherwise have to
pay such Additional Amounts establishes to the satisfaction of the Trustee
that the obligation to pay such Additional Amounts would not have arisen but
for the failure of such beneficial holder to (A) duly complete such forms as
were actually received by such beneficial holder or respond to such
instructions and (B) provide to such Guarantor such duly completed forms or
responses to instructions.  Without prejudice to the survival of any other
agreement of the Guarantors hereunder, the agreements and obligations of the
Guarantors contained in this Section 1205 shall survive the payment in full of
the Guaranteed Obligations and all other amounts payable under this Guarantee.

       SECTION 1206. Limitation of Subsidiary Guarantee.

       The Company and each Guarantor, and each Holder of a Security by his
acceptance thereof, hereby confirm that it is the intention of all such
parties that any Guarantee of the Guaranteed Obligations executed by a
Subsidiary Guarantor not constitute a fraudulent transfer or conveyance for
purposes of the Federal Bankruptcy Code, the Uniform Fraudulent Conveyance Act
or any similar federal or state law.  To effectuate the foregoing intention,
the Holders hereby irrevocably agree that in the event that any such Guarantee
would constitute or result in a violation of any applicable fraudulent
conveyance or similar law of any relevant jurisdiction, the liability of the
Subsidiary Guarantor under such Guarantee shall be reduced to the maximum
amount, after giving effect to all other contingent and fixed liabilities of
such Subsidiary Guarantor, permissible under the applicable fraudulent
conveyance or similar law.

       SECTION 1207. Release of Guarantee.

       (a) Concurrently with the payment in full of all of the Guaranteed
Obligations, the Guarantors shall be released from and relieved of their
obligations under this Article Twelve.  Upon the delivery by the Company to
the Trustee of an Officers' Certificate and, if requested by the Trustee, an
Opinion of Counsel to the effect that the transaction giving rise to the
release of such obligations was made by the Company in accordance with the
provisions of this Indenture and the Securities, the Trustee shall execute any
documents reasonably required in order to evidence the release of the
Guarantors from their obligations.  If any of the Guaranteed Obligations are
revived and reinstated after the termination of this Guarantee, then all of the
obligations of the Guarantors under this Guarantee shall be revived and
reinstated as if this Guarantee had not been terminated until such time as the
Guaranteed Obligations are paid in full, and the Guarantors shall enter into
an amendment to this Guarantee, reasonably satisfactory to the Trustee,
evidencing such revival and reinstatement.

       (b) Upon (i) the sale or disposition of all of the Common Stock of a
Subsidiary Guarantor (by merger or otherwise) to a Person other than the
Company, ADT Limited or another Restricted Subsidiary and which sale or
disposition is otherwise in compliance with the terms of this Indenture, or
(ii) the unconditional and full release in writing of such Subsidiary Guarantor
from all Indebtedness (including, without limitation, Indebtedness under the
New Bank Credit Agreement, but excluding any Permitted Non-Guarantor
Indebtedness (other than Indebtedness specified in subparagraph (i) of the
definition of "Permitted Non-Guarantor Indebtedness" or any renewals,
extensions, substitutions or replacements thereof), such Subsidiary Guarantor
shall be deemed released from all obligations under this Article Twelve;
provided, however, that any such termination upon such sale or disposition
shall occur if and only to the extent that all obligations of such Subsidiary
Guarantor under all of its guarantees of, and under all of its pledges of
assets or other security interests which secure, Indebtedness of the Company,
ADT Limited or any Restricted Subsidiary shall also terminate upon such sale
or disposition.  Upon the delivery by the Company to the Trustee of an
Officers' Certificate and, if requested by the Trustee, an Opinion of Counsel
to the effect that the transaction giving rise to the release of such
obligations was made in accordance with the provisions of this Indenture and
the Securities, the Trustee shall execute any documents reasonably required in
order to evidence the release of such Subsidiary Guarantor from its
obligations.  Any Subsidiary Guarantor not so released remains liable for the
full amount of principal of and interest on the Securities as provided in this
Article Twelve.

       This Indenture may be signed in any number of counterparts each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same Indenture.


       IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of the day and year first above written.

                                    ADT OPERATIONS, INC.

[SEAL]                              By_____________________
                                      Title:

Attest:____________________
       Title:
                                    ADT LIMITED

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT GENERAL HOLDINGS, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT SECURITY SERVICES, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:


                                    ADT SECURITY SYSTEMS, WEST, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT AUTOMOTIVE HOLDINGS, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT AUTOMOTIVE, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                     AA PROPERTY HOLDINGS, INC.

[SEAL]                               By____________________
                                       Title:

Attest:____________________
       Title:

                                     ADT INVESTMENTS, INC.

[SEAL]                               By____________________
                                       Title:

Attest:____________________
       Title:

                                     AAAA DEALERS SERVICES INC.

[SEAL]                               By____________________
                                       Title:

Attest:____________________
       Title:

                                     ADT BUSINESS HOLDINGS, INC.

[SEAL]                               By___________________
                                       Title:

Attest:____________________
       Title:


                                     ADT PROPERTY HOLDINGS, INC.

[SEAL]                               By____________________
                                       Title:

Attest:____________________
       Title:


                                     ADT SECURITY SYSTEMS
                                       MANUFACTURING, INC.

[SEAL]                               By____________________
                                       Title:

Attest:____________________
       Title:

                                    MID-ATLANTIC SECURITY, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT AUTOMOTIVE SERVICES, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    AUCTION TRANSPORT, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:


                                    BRITISH CAR AUCTIONS, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    CCTC INTERNATIONAL, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    ADT SPECIALTY AUCTIONS, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    FLYING LION, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    TRI-CITY AUTO AUCTION, INC.

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:

                                    THE CHASE MANHATTAN BANK

[SEAL]                              By____________________
                                      Title:

Attest:____________________
       Title:





<PAGE>

                                                                 EXHIBIT 10.2
==============================================================================
                           ADT OPERATIONS, INC.,
                                as Issuer,

                                    AND

                               ADT LIMITED,
                        ADT GENERAL HOLDINGS, INC.,
                       ADT SECURITY SERVICES, INC.,
                     ADT SECURITY SYSTEMS, WEST, INC.,
                      ADT AUTOMOTIVE HOLDINGS, INC.,
                           ADT AUTOMOTIVE, INC.,
                        AA PROPERTY HOLDINGS, INC.,
                          ADT INVESTMENTS, INC.,
                        AAAA DEALERS SERVICES INC.,
                       ADT BUSINESS HOLDINGS, INC.,
                       ADT PROPERTY HOLDINGS, INC.,
                 ADT SECURITY SYSTEMS MANUFACTURING, INC.,
                       MID-ATLANTIC SECURITY, INC.,
                       ADT AUTOMOTIVE SERVICES INC.,
                          AUCTION TRANSPORT INC.,
                        BRITISH CAR AUCTIONS INC.,
                         CCTC INTERNATIONAL, INC.,
                       ADT SPECIALTY AUCTIONS, INC.,
                             FLYING LION INC.
                                    AND
                       TRI-CITY AUTO AUCTION, INC.,
                              as Guarantors,

                                    AND

                         THE CHASE MANHATTAN BANK
                                as Trustee
                              _______________

                           Amended and Restated
                                Indenture
                         Dated as of July 2, 1997
                              _______________

                               $250,000,000
                       8-1/4% Senior Notes due 2000

==============================================================================

                             ADT OPERATIONS, INC.

              Reconciliation and tie between Trust Indenture Act
               of 1939 and Indenture, dated as of August 4, 1993

Trust Indenture                                              Indenture
  Act Section                                                 Section
- ---------------                                              ---------
Section  310 (a)(1).............................................607
      (a)(2)....................................................607
      (b).......................................................608
Section  312 (c)................................................701
Section  314 (a)................................................703
      (a)(4)....................................................1008(a)
      (c)(1)....................................................102
      (c)(2)....................................................102
      (e).......................................................102
Section  315 (b)................................................601
Section  316 (a)(last sentence).................................101
      ("Outstanding")
      (a)(1)(A).................................................502, 512
      (a)(1)(B).................................................513
      (b).......................................................508
      (c).......................................................104(d)
Section  317 (a)(1).............................................503
      (a)(2)....................................................504
      (b).......................................................1003
Section  318 (a)................................................111
____________
Note:  This reconciliation and tie shall not, for any purpose, be deemed to be
a part of the Indenture.

                    TABLE OF CONTENTS
                                                      Page
                                                      ----
RECITALS............................................... 1
PARTIES................................................ 1

                      ARTICLE ONE

           DEFINITIONS AND OTHER PROVISIONS
                OF GENERAL APPLICATION

SECTION 101.  Definitions.............................  2
   Act................................................  3
   ADT Limited........................................  3
   Affiliate..........................................  3
   Agent..............................................  3
   Attributable Debt..................................  3
   Average Life to Stated Maturity....................  3
   Board of Directors.................................  4
   Board Resolution...................................  4
   Business Day.......................................  4
   Canadian Revolving Credit Lines....................  4
   Capitalized Lease Obligation.......................  4
   Capital Stock......................................  4
   Cash Equivalents...................................  4
   Change in Control..................................  5
   Commission.........................................  6
   Common Stock.......................................  6
   Company............................................  6
   Company Request....................................  6
   Consolidated Net Worth.............................  6
   Consolidated Tangible Assets.......................  6
   Corporate Trust Office.............................  6
   Corporation........................................  6
   Default............................................  7
   Defaulted Interest.................................  7
   Dollar Equivalent..................................  7
   Event of Default...................................  7
   Exchange Act.......................................  7
   Federal Bankruptcy Code............................  7
   Finance Canada Preferred Stock.....................  7
   Generally Accepted Accounting
    Principles........................................  7
   Guaranteed Obligations.............................  7
   Guaranteed Parties.................................  8
   Guarantees.........................................  8
   Guarantor..........................................  8
   Guarantor Senior Indebtedness......................  8
   Holder.............................................  8
   Indebtedness.......................................  9
   Indenture..........................................  9
   Interest Payment Date..............................  9
   Investment.........................................  9
   Laidlaw Group......................................  9
   Lender.............................................  9
   Lien............................................... 10
   Material Restricted Subsidiary..................... 10
   Maturity........................................... 10
   New Bank Credit Agreement.......................... 10
   Non-Guarantor...................................... 10
   Officers' Certificate.............................. 10
   Opinion of Counsel................................. 10
   Outstanding........................................ 11
   Paying Agent....................................... 11
   Permitted Non-Guarantor Indebtedness............... 11
   Person............................................. 13
   Post-Merger Entity................................. 13
   Predecessor Security............................... 13
   Preferred Stock.................................... 13
   Redeemable Capital Stock........................... 13
   Reference Banks.................................... 14
   Regular Record Date................................ 14
   Responsible Officer................................ 14
   Restricted Subsidiary.............................. 14
   Securities......................................... 14
   Security Register.................................. 14
   Security Registrar................................. 14
   Senior Subordinated Note Indenture................. 14
   Senior Subordinated Notes.......................... 15
   Special Record Date................................ 15
   Stated Maturity.................................... 15
   Subordinated Indebtedness.......................... 15
   Subsidiary......................................... 15
   Subsidiary Guarantor............................... 15
   Surviving Entity................................... 15
   Trust Indenture Act................................ 15
   TIA................................................ 15
   Trustee............................................ 15
   Tyco............................................... 15
   Unrestricted Subsidiary............................ 15
   U.S. Government Obligations........................ 16
   Vice President..................................... 17
   Voting Stock....................................... 17
   Wholly Owned Restricted Subsidiary................. 17
SECTION 102.   Compliance Certificates and
   Opinions........................................... 17
SECTION 103.   Form of Documents Delivered to
   Trustee............................................ 18
SECTION 104.   Acts of Holders........................ 19
SECTION 105.   Notices, etc., to Trustee, Company,
   Guarantors and Agent............................... 20
SECTION 106.   Notice to Holders;
   Waiver............................................. 20
SECTION 107.   Effect of Headings and Table of
   Contents........................................... 21
SECTION 108.   Successors and Assigns................. 21
SECTION 109.   Separability Clause.................... 21
SECTION 110.   Benefits of Indenture.................. 21
SECTION 111.   Governing Law.......................... 22
SECTION 112.   Legal Holidays......................... 22
SECTION 113.   No Recourse Against Others............. 22
SECTION 114.   Submission to Jurisdiction............. 22

                     ARTICLE TWO

                   SECURITY FORMS

SECTION 201.   Forms Generally........................ 23
SECTION 202.   Form of Face of Security............... 24
SECTION 203.   Form of Reverse of Security............ 25
SECTION 204.   Form of Trustee's Certificate of
   Authentication..................................... 28
SECTION 205.   Form of Guarantee...................... 28

                    ARTICLE THREE

                    THE SECURITIES

SECTION 301.   Title and Terms........................ 34
SECTION 302.   Denominations.......................... 35
SECTION 303.   Execution, Authentication, Delivery and
   Dating............................................. 35
SECTION 304.   Temporary Securities................... 36
SECTION 305.   Registration, Registration of Transfer
   and Exchange....................................... 36
SECTION 306.   Mutilated, Destroyed, Lost and Stolen
   Securities......................................... 37
SECTION 307.   Payment of Interest; Interest Rights
   Preserved.......................................... 38
SECTION 308.   Persons Deemed Owners.................. 40
SECTION 309.   Cancellation........................... 40
SECTION 310.   Computation of Interest................ 40
SECTION 311.   Designation as Senior
   Indebtedness....................................... 40

                    ARTICLE FOUR

             SATISFACTION AND DISCHARGE

SECTION 401.   Satisfaction and Discharge of
   Indenture.......................................... 41
SECTION 402.   Application of Trust Money............. 42

                    ARTICLE FIVE

                      REMEDIES

SECTION 501.   Events of Default...................... 42
SECTION 502.   Acceleration of Maturity; Rescission
   and Annulment...................................... 45
SECTION 503.   Collection of Indebtedness and Suits
   for Enforcement by Trustee......................... 46
SECTION 504.   Trustee May File Proofs of
   Claim.............................................. 47
SECTION 505.   Trustee May Enforce Claims Without
   Possession of Securities........................... 48
SECTION 506.   Application of Money Collected......... 48
SECTION 507.   Limitation on Suits.................... 48
SECTION 508.   Unconditional Right of Holders to
   Receive Principal, Premium and Interest............ 49
SECTION 509.   Restoration of Rights and
   Remedies........................................... 49
SECTION 510.   Rights and Remedies
   Cumulative......................................... 49
SECTION 511.   Delay or Omission Not
   Waiver............................................. 50
SECTION 512.   Control by Holders..................... 50
SECTION 513.   Waiver of Past Defaults................ 50
SECTION 514.   Waiver of Stay or Extension
   Laws............................................... 51

                     ARTICLE SIX

                     THE TRUSTEE

SECTION 601.   Notice of Defaults..................... 51
SECTION 602.   Certain Rights of Trustee.............. 52
SECTION 603.   Trustee Not Responsible for Recitals
   or Issuance of Securities.......................... 53
SECTION 604.   May Hold Securities.................... 53
SECTION 605.   Money Held in Trust.................... 54
SECTION 606.   Compensation and Reimbursement......... 54
SECTION 607.   Corporate Trustee Required;
   Eligibility........................................ 55
SECTION 608.   Resignation and Removal; Appointment of
   Successor.......................................... 55
SECTION 609.   Acceptance of Appointment by
   Successor.......................................... 56
SECTION 610.   Merger, Conversion, Consolidation or
   Succession to Business............................. 57

                         ARTICLE SEVEN

       HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.   Disclosure of Names and Addresses of
   Holders............................................ 57
SECTION 702.   Reports by Trustee..................... 58
SECTION 703.   Reports by Company and the
   Guarantors......................................... 58

                         ARTICLE EIGHT

     CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.   ADT Limited or Any Restricted Subsidiary
   May Consolidate, etc. Only on Certain Terms........ 59
SECTION 802.   ADT Limited May Amalgamate,
   Redomesticate, etc., Only on Certain Terms......... 60
SECTION 803.   Successor Substituted.................. 61

                        ARTICLE NINE

                   SUPPLEMENTAL INDENTURES

SECTION 901.   Supplemental Indentures Without Consent
   of Holders......................................... 62
SECTION 902.   Supplemental Indentures with Consent of
   Holders............................................ 62
SECTION 903.   Execution of Supplemental
   Indentures......................................... 63
SECTION 904.   Effect of Supplemental Indentures...... 64
SECTION 905.   Conformity with Trust Indenture
   Act................................................ 64
SECTION 906.   Reference in Securities to Supplemental
   Indentures......................................... 64
SECTION 907.   Notice of Supplemental
   Indentures......................................... 64

                         ARTICLE TEN

                          COVENANTS

SECTION 1001.  Payment of Principal, Premium, if any,
   and Interest....................................... 64
SECTION 1002.  Maintenance of Office or
   Agency............................................. 65
SECTION 1003.  Money for Security Payments to Be Held
   in Trust........................................... 65
SECTION 1004.  Corporate Existence.................... 67
SECTION 1005.  Payment of Taxes and Other Claims...... 67
SECTION 1006.  Maintenance of Properties.............. 67
SECTION 1007.  Insurance.............................. 68
SECTION 1008.  Statement by Officers As to
   Default............................................ 68
SECTION 1009.  Provision of Financial
   Statements......................................... 68
SECTION 1010.  Purchase of Securities upon Change in
   Control............................................ 69
[SECTIONS 1011-1020 intentionally
   omitted.].......................................... 70
SECTION 1021.  Waiver of Certain
   Covenants.......................................... 70

                       ARTICLE ELEVEN

             DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1101.  Company's Option to Effect Defeasance
   or Covenant Defeasance............................. 70
SECTION 1102.  Defeasance and Discharge............... 70
SECTION 1103.  Covenant Defeasance.................... 71
SECTION 1104.  Conditions to Defeasance or Covenant
   Defeasance......................................... 71
SECTION 1105.  Deposited Money and U.S. Government
   Obligations to Be Held in Trust; Other Miscellaneous
   Provisions......................................... 73
SECTION 1106.  Reinstatement.......................... 74

                       ARTICLE TWELVE

                          GUARANTEE

SECTION 1201.  Guarantee.............................. 74
SECTION 1202.  Obligations of the Guarantors
   Unconditional...................................... 76
SECTION 1203.  Execution of Guarantee................. 76
SECTION 1204.  Ranking of Guarantee................... 77
SECTION 1205.  Withholding............................ 77
SECTION 1206.  Limitation of Subsidiary
   Guarantee.......................................... 78
SECTION 1207.  Release of Guarantee................... 78



            AMENDED AND RESTATED INDENTURE, dated as of July 2, 1997 among ADT
OPERATIONS, INC., a corporation duly organized and existing under the laws of
the State of Delaware (herein called the "Company"), having its principal
office at 902 Market Street, 13th Floor, Wilmington, Delaware 19899, as
Issuer, ADT LIMITED, a company duly organized and existing under the laws of
Bermuda ("ADT Limited"), having its principal office at Cedar House, 41 Cedar
Avenue, Hamilton HM12, Bermuda, ADT GENERAL HOLDINGS, INC., ADT SECURITY
SERVICES, INC., ADT SECURITY SYSTEMS, WEST, INC., ADT AUTOMOTIVE HOLDINGS,
INC., ADT AUTOMOTIVE, INC., AA PROPERTY HOLDINGS, INC., ADT INVESTMENTS, INC.,
AAAA DEALERS SERVICES INC., ADT BUSINESS HOLDINGS, INC., ADT PROPERTY
HOLDINGS, INC., ADT SECURITY SYSTEMS MANUFACTURING, INC., MID-ATLANTIC
SECURITY, INC., ADT AUTOMOTIVE SERVICES INC., BRITISH CAR AUCTIONS INC., CCTC
INTERNATIONAL, INC. and FLYING LION INC., each a corporation duly organized
and existing under the laws of the State of Delaware, AUCTION TRANSPORT INC.,
a corporation duly organized and existing under the laws of Missouri, ADT
SPECIALTY AUCTIONS, INC., INC., a corporation duly organized and existing
under the laws of the State of Michigan, and TRI-CITY AUTO AUCTION, INC., a
corporation duly organized and existing under the laws of the State of
Washington, as Guarantors (the "Guarantors"), and THE CHASE MANHATTAN BANK, a
New York banking corporation, duly organized and existing under the laws of
the State of New York, as Trustee (herein called the "Trustee").

                   RECITALS OF THE COMPANY AND THE GUARANTOR

      The Company has duly authorized the creation of an issue of 8-1/4%
Senior Notes due 2000 (herein called the "Securities"), of substantially the
tenor and amount hereinafter set forth, and to provide therefor the Company
has duly authorized the execution and delivery of the Indenture, dated as of
August 4, 1993 among the Company, the Guarantors listed therein and the
Trustee (the "1993 Senior Note Indenture") and the Securities.

      The Guarantor has duly authorized the issuance of a guarantee (the
"Guarantees") of the Securities, of substantially the tenor hereinafter set
forth, and to provide therefor each Guarantor has duly authorized the
execution and delivery of the 1993 Senior Note Indenture and the Guarantees.

      The Holders of not less than a majority in principal amount of the
Outstanding Securities, by Act of said Holders delivered to the Company and
the Trustee, have authorized certain amendments to the 1993 Senior Note
Indenture.
      The Company, the Guarantors and the Trustee have duly authorized the
execution and delivery of this Indenture.

      This Indenture is subject to the provisions of the Trust Indenture Act
of 1939, as amended, that are required to be part of this Indenture and shall,
to the extent applicable, be governed by such provisions.

      All things necessary have been done to make (i) the Securities the valid
obligations of the Company, (ii) the Guarantees the valid obligation of each
Guarantor and (iii) this Indenture a valid agreement of the Company and the
Guarantors, in accordance with their respective terms.

                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

      For and in consideration of the premises, the prior purchase of the
Securities by the Holders thereof and the receipt of consideration pursuant to
a simultaneous tender offer and consent solicitation by the Company for the
Securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Securities, as follows:

                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

            SECTION 101.  Definitions.

            For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

                  (a)   the terms defined in this Article have the meanings
            assigned to them in this Article, and include the plural as well
            as the singular;

                  (b)   all other terms used herein which are defined in the
            Trust Indenture Act, either directly or by reference therein, have
            the meanings assigned to them therein, and the terms "cash
            transaction" and "self-liquidating paper", as used in TIA Section
            311, shall have the meanings assigned to them in the rules of the
            Commission adopted under the Trust Indenture Act; and

                  (c)   the words "herein", "hereof" and "hereunder" and other
            words of similar import refer to this Indenture as a whole and not
            to any particular Article, Section or other subdivision.

            Certain terms, used principally in Article Ten, are defined in
that Article.

            "Act", when used with respect to any Holder, has the meaning
specified in Section 104 hereof.

            "ADT Limited" means ADT Limited, a Bermuda company.

            "Affiliate" of any specified Person means (i) any other Person
directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person or (ii) any officer or
director of such specified Person.  For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

            "Agent" means The Bank of Nova Scotia, as agent under the New Bank
Credit Agreement, and any future such agent or agents under the New Bank
Credit Agreement.

            "Attributable Debt" means, when used in connection with a sale and
leaseback transaction, at the time of determination, the present value
(discounted at the interest rate implicit in the lease, compounded
semiannually) of the obligation of the lessee of the property subject to such
sale and leaseback transaction for rental payments during the remaining term
of the lease included in such transaction, including any period for which such
lease has been extended or may, at the option of the lessor, be extended or
until the earliest date on which the lessee may terminate such lease without
penalty or upon payment of penalty (in which case the rental payments shall
include such penalty), after excluding all amounts required to be paid on
account of maintenance and repairs, insurance, taxes, assessments, water,
utilities and similar charges.

            "Average Life to Stated Maturity" means, with respect to any
Indebtedness, as at any date of determination, the quotient obtained by
dividing (i) the sum of the products  of (a) the number of years from such
date to the date or dates of each successive scheduled principal payment
(including, without limitation, any sinking fund requirements) of such
Indebtedness multiplied by (b) the amount of each such principal payment by
(ii) the sum of all such principal payments.

            "Board of Directors" means the board of directors of ADT Limited;
provided, however, that for purposes of the proviso of Section 1004 hereof
with respect to any right or franchise of a Restricted Subsidiary other than
the Company, "Board of Directors" shall include any committee of such Board of
Directors duly authorized to act under this Indenture.

            "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of ADT Limited, the Company or any other
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors of ADT Limited or the board of directors of the Company or such
other Guarantor, as the case may be, and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

            "Business Day" means each Monday, Tuesday, Wednesday, Thursday and
Friday which is not a day on which banking institutions in The City of New
York are authorized or obligated by law or executive order to close.

            "Canadian Revolving Credit Lines" means the committed lines of
credit outstanding on the date hereof for working capital purposes in Canada
in an aggregate amount not to exceed Canadian $60,000,000, provided that all
amounts outstanding under such committed lines of credit are at all times
supported by irrevocable letters of credit issued under the New Bank Credit
Agreement.

            "Capitalized Lease Obligation" means any obligation under any
capital lease of real or personal property that, in accordance with GAAP, has
been recorded as a capitalized lease obligation, and, for purposes of this
Indenture, the amount of such obligation at any date shall be the capitalized
amount thereof at such date, determined in accordance with GAAP.

            "Capital Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated) of
such Person's capital stock whether now outstanding or issued after the date
hereof, including, without limitation, all Common Stock and Preferred Stock.

            "Cash Equivalents" means (i) any evidence of Indebtedness with a
maturity of 180 days or less issued or directly and fully guaranteed or
insured by the United States of America or any agency or instrumentality
thereof (provided that the full faith and credit of the United States of
America is pledged in support thereof); (ii) certificates of deposit or time
deposits with a maturity of 180 days or less of any financial institution that
is a member of the Federal Reserve System having combined capital and surplus
and undivided profits of not less than $500,000,000 (x) whose short term
obligations have a rating, at the time as of which any such Investment is
made, of "P-1" (or higher) according to Moody's Investors Service, Inc. or
"A-1" (or higher) according to Standard & Poor's Corporation or (y) whose debt
is rated, at the time as of which any Investment therein is made, "A" (or
higher) according to Moody's Investors Service, Inc. or "A" (or higher)
according to Standard & Poor's Corporation; (iii) commercial paper with a
maturity of 180 days or less issued by a corporation (other than an Affiliate
of ADT Limited) organized under the laws of any state of the United States of
America or the District of Columbia and rated "P-1" (or higher) according to
Moody's Investors Service, Inc. or "A-1" (or higher) according to Standard &
Poor's Corporation or at least an equivalent rating category of another
nationally recognized securities rating agency; and (iv) any money market
deposit accounts issued or offered by any commercial banking institution
described in clause (ii) above.

            "Change in Control" means an event as a result of which (i) any
"person" or "group" (as such terms are used in Sections 13(d) and 14(d) of the
Exchange Act), including the Laidlaw Group, is or becomes the direct or
indirect "beneficial owner" (as defined in Rule 13d-3 and 13d-5 under the
Exchange Act) of (A) if the Laidlaw Group beneficially owns more than 20% of
the outstanding Voting Stock of ADT Limited, more than 50% of such outstanding
Voting Stock and (B) if the Laidlaw Group beneficially owns 20% or less of the
outstanding Voting Stock of ADT Limited, more than 40% of such outstanding
Voting Stock, (ii) during any period of two consecutive years, individuals who
either (a) were members of the Board of Directors at the beginning of such
period or (b) whose election by the Board of Directors or whose nomination for
election by the shareholders of ADT Limited was approved by a vote of 66 2/3%
of the directors then still in office who were either directors at the
beginning of such period or whose election or nomination for election was
previously approved as provided for in this clause (b) cease for any reason
(including as a result of any proxy contest involving the solicitation of
revocable proxies under Section 14(a) of the Exchange Act) to constitute a
majority of the Board of Directors, (iii) the Company consolidates with or
merges with or into any other Person or all or substantially all of the
Company's assets are sold, conveyed, assigned, transferred, leased or
otherwise disposed of to any Person, or any corporation consolidates with or
merges with or into the Company (other than to, with or into a Wholly Owned
Restricted Subsidiary of ADT Limited), or (iv) ADT Limited consolidates or
amalgamates with or merges with or into any Person or all or substantially all
of ADT Limited's assets are sold, conveyed, assigned, leased or otherwise
disposed of to any Person, or any corporation consolidates with or merges with
or into ADT Limited, in any such event pursuant to a transaction in which the
outstanding Voting Stock of ADT Limited is changed into or exchanged for cash,
securities or other property, other than any such transaction (a) where the
outstanding Voting Stock of ADT Limited is not changed or exchanged at all
(except, with respect to any such transaction described above, to the extent
necessary to reflect a change in the jurisdiction of incorporation of ADT
Limited) or (b) where (A) the outstanding Voting Stock of ADT Limited is
changed into or exchanged for Voting Stock (other than Redeemable Capital
Stock) of the surviving corporation and (B) no "person" or "group" (as such
term is used in Sections 13(d) and 14(d) of the Exchange Act) is the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange
Act, except that a Person shall be deemed to have "beneficial ownership" of
all securities that such Person has the right to acquire, whether or not such
right is exercisable immediately or only after the passage of time)
immediately after such transaction, directly or indirectly, of more than 50%
of the total outstanding Voting Stock of the surviving corporation.

            "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under  the Securities Exchange Act of 1934,
or, if at any time after the execution of this Indenture such Commission is
not existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties at such time.

            "Common Stock" means, with respect to any Person, any and all
shares, interests, participations and other equivalents (however designated,
whether voting or non-voting) of such Person's common stock, whether now
outstanding or issued after the date of this Indenture, and includes, without
limitation, all series and classes of such common stock.

            "Company" means the Person named as the "Company" in the first
paragraph of this Indenture, until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

            "Company Request" or "Company Order" means a written request or
order signed in the name of the Company by its Chairman, its President, any
Vice President, its Treasurer or an Assistant Treasurer, and delivered to the
Trustee.

            "Consolidated Net Worth" means the consolidated stockholders'
equity (excluding Redeemable Capital Stock) of a person and its consolidated
Subsidiaries (and in the case of ADT Limited, of ADT Limited and its
Restricted Subsidiaries), as determined in accordance with GAAP.

            "Consolidated Tangible Assets" means the total amount of assets of
the Company, ADT Limited and the other Restricted Subsidiaries (less
applicable reserves and other properly deductible items) after deducting (i)
all current liabilities (excluding any thereof which are by their terms
extendible or renewable at the option of the obligor thereon to a time more
than 12 months after the time as of which the amount thereof is being
computed) and (ii) all good will, trade names, trademarks, patents,
unamortized debt discount and expense and other like intangibles, all
determined in accordance with GAAP.

            "Corporate Trust Office" means the principal corporate trust
office of the Trustee, at which at any particular time its corporate trust
business shall be administered, which office at the date of execution of this
Indenture is located at 450 West 33rd Street, 15th Floor, New York, New York
10001, except that with respect to presentation of Securities for payment or
for registration of transfer or exchange, such term shall mean the office or
agency of the Trustee at which, at any particular time, its corporate agency
business shall be conducted.

            "Corporation" includes corporations, associations, companies and
business trusts.

            "Default" means any event which is, or after notice or passage of
time or both would be, an Event of Default.

            "Defaulted Interest" has the meaning specified in Section 307.

            "Dollar Equivalent" means, with respect to any amount of any
currency other than U.S. dollars, the equivalent amount of U.S. dollars
determined by using the arithmetic average of the quoted spot rates at which
the principal office or principal branch office of each of the Reference Banks
in London offers to provide such other currency in exchange for U.S. dollars
in London at 2:00 P.M. London time on the date as of which such Dollar
Equivalent is to be determined, provided that if one or more of the Reference
Banks no longer announces such quoted spot rates for such currency, then the
Dollar Equivalent shall be determined by using the arithmetic average of the
quoted spot rates or the quoted spot rate, as the case may be, of the other
Reference Banks or Bank, respectively.

            "Event of Default" has the meaning specified in Section 501 hereof.

            "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

            "Federal Bankruptcy Code" means Title 11 of the United States
Code, as amended from time to time.

            "Finance Canada Preferred Stock" means the Non-Voting Exchangeable
Shares, Series A, of ADT Finance Inc., a Canadian corporation (the "Series A
Shares"), and any publicly-held non-voting Preferred Stock issued by any
successor corporation of ADT Finance Inc. incorporated under the laws of
Canada ("Finance Canada") (i) in respect of which dividends are payable only
when a dividend is payable by ADT Limited in respect of its voting Common
Stock, (ii) that is convertible, exchangeable or redeemable only for voting
Common Stock of ADT Limited, (iii) that will entitle the holder thereof to
participate in any liquidation, dissolution or winding up of Finance Canada,
whether voluntary or  involuntary, or any other distribution of assets of
Finance Canada among its stockholders for the purpose of winding up its
affairs, to no greater extent than the extent to which the holders of the
Series A Shares would currently so participate and (iv) the other terms of
which are not adverse in any material respect to the Holders of the Securities.

            "Generally Accepted Accounting Principles" or "GAAP" means
generally accepted accounting principles in the United States, consistently
applied, that are in effect on the date hereof.

            "Guaranteed Obligations" has the meaning specified in Section 1201
hereof.

            "Guaranteed Parties" means all the Persons who are now or who
hereafter become Holders and the Trustee.

            "Guarantees" means the guarantees of the Guarantors set forth in
Article Twelve of this Indenture and more particularly means any guarantees
endorsed on any Securities delivered under this Indenture.

            "Guarantor" means each of the parties named as "Guarantors" in the
first paragraph of this Indenture, until a successor replaces any such
Guarantor pursuant to the applicable provisions hereof and, thereafter, shall
mean such successor; provided, however, that  unless expressly provided for
otherwise by a supplemental indenture hereto, no Post-Merger Entity shall be a
"Guarantor".

            "Guarantor Senior Indebtedness" means the principal of (and
premium, if any, on) and interest on (including interest accruing after the
filing of a petition initiating any proceeding pursuant to any bankruptcy law,
whether or not allowable as a claim in such proceeding) and other amounts due
on or in connection with any Indebtedness of any Guarantor, whether
outstanding on the date hereof or hereafter created, incurred or assumed,
unless, in the case of any particular Indebtedness, the instrument creating or
evidencing the same or pursuant to which the same is outstanding expressly
provides that such Indebtedness shall not be pari passu with the Guarantees.
Without limiting the generality of the foregoing, "Guarantor Senior
Indebtedness" shall include the principal of (and premium, if any, on) and
interest (including interest accruing after the filing of a petition
initiating any proceeding pursuant to any bankruptcy law, whether or not
allowable as a claim in such proceeding) on all obligations of every nature of
any Guarantor to the Lenders under the New Bank Credit Agreement and to the
Holders of the Securities, and any interest rate or foreign exchange agreement
now existing or hereinafter entered into by any Guarantor with any Lender,
including, without limitation, all fees, expenses (including fees and expenses
of counsel), claims, charges and indemnity obligations.  Notwithstanding the
foregoing, "Guarantor Senior Indebtedness" shall not include (i) Indebtedness
evidenced by the guarantees of the Senior Subordinated Notes, (ii)
Indebtedness of any Guarantor that is expressly subordinated in right of
payment to any of such Guarantor's Guarantees, (iii) Indebtedness of any
Guarantor that by operation of law is subordinate to any general unsecured
obligations of such Guarantor, (iv) Indebtedness represented by Redeemable
Capital Stock, (v) Indebtedness of any Guarantor to ADT Limited or any of its
Subsidiaries, (vi) any liability for federal, state, local or other taxes owed
or owing by any Guarantor and (vii) trade payables owed or owing by any
Guarantor.

            "Holder" means a Person in whose name a Security is registered in
the Security Register.

            "Indebtedness" means (i) any liability of any Person (A) for
borrowed money, or under any reimbursement obligation relating to a letter of
credit, or (B) evidenced by a bond, note, debenture or similar instrument
(including a purchase money obligation) given in connection with the
acquisition of any businesses, properties or assets of any kind (other than
a trade payable or a current liability arising in the ordinary course of
business), or (C) under interest rate contracts and exchange rate contracts,
or (D) for the payment of money relating to a Capitalized Lease Obligation or
(E) for all Redeemable Capital Stock valued at the greater of its voluntary or
involuntary liquidation preference plus accrued and unpaid dividends; (ii) any
liability of others described in the preceding clause (i) that such Person has
guaranteed or that is otherwise its legal liability; (iii) all Indebtedness
referred to in (but not excluded from) clauses (i) and (ii) above of other
Persons and all dividends of other Persons, the payment of which is secured by
(or for which the holder of such Indebtedness has an existing right,
contingent or otherwise, to be secured by) any Lien upon or in property
(including, without limitation, accounts and contract rights) owned by such
Person, even though such Person has not assumed or become liable for the
payment of such Indebtedness; and (iv) any amendment, supplement,
modification, deferral, renewal, extension or refunding of any liability of
the types referred to in clauses (i), (ii) and (iii) above.

            "Indenture" means this amended and restated indenture as
originally executed and as it may from time to time be supplemented or
amended by one or more indentures supplemental hereto entered into pursuant to
the applicable provisions hereof.

            "Interest Payment Date" means the Stated Maturity of an
installment of interest on the Securities.

            "Investment" means any direct or indirect advance, loan (other
than advances to customers in the ordinary course of business, which are
recorded as accounts receivable on the balance sheet of the Company, ADT
Limited and the other Restricted Subsidiaries) or other extension of credit or
capital contribution to (by means of any transfer of cash or other property to
others or any payment for property or services for the account or use of
others), or any purchase or acquisition of Capital Stock, bonds, notes,
debentures or other securities issued by any other Person.

            "Laidlaw Group" means Laidlaw Inc., a Canadian corporation, and
any of its Affiliates or any "group" (as such term is used in Sections 13(d)
and 14(d) of the Exchange Act) that includes Laidlaw Inc. or any of its
Affiliates.

            "Lender" means the various financial institutions as are, or shall
from time to time become, parties to the New Bank Credit Agreement.

            "Lien" means any mortgage, charge, pledge, lien, security interest
or encumbrance of any kind.

            "Material Restricted Subsidiary" means any Restricted Subsidiary
whose total assets or consolidated revenues (or, where ADT Limited owns
directly or indirectly less than 100% of the equity share capital of such
Restricted Subsidiary, that part thereof attributable to ADT Limited's direct
or indirect interest therein) is equal to or greater than 5% of the total
assets or 5% of consolidated revenues, as the case may be, of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited; provided,
however, that a Material Restricted Subsidiary shall not include Insight Group
Limited, a United Kingdom corporation ("Insight"), for so long as Insight does
not conduct any business other than the travel services business and does not
account for more than 15% of the consolidated revenues of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited.

            "Maturity", when used with respect to any Security, means the date
on which the principal of such Security or an installment of principal becomes
due and payable as therein or herein provided, whether at the Stated Maturity
or purchase upon Change in Control, and whether by declaration of
acceleration, Change in Control, call for purchase or otherwise.

            "New Bank Credit Agreement" means, collectively, the Amended and
Restated Credit Agreement, dated as of April 14, 1997, among the Company, the
Lenders named therein, and the Bank of Nova Scotia, as Agent, together with
any related documents (including, without limitation, any guarantees or
security documents) as in effect on the date hereof and as such Agreement (and
such related documents) may be amended, restated, supplemented, renewed,
replaced or otherwise modified from time to time, including any agreement
extending the maturity of or refinancing or refunding all or any portion of the
Indebtedness or increasing the amount to be borrowed under such agreement or
any successor agreement, whether or not by or among the same parties.

            "Non-Guarantor" means all Restricted Subsidiaries of ADT Limited
other than the Company and the Guarantors.

            "Officers' Certificate" means a certificate signed by the
Chairman, the President or a Vice President, and by the Treasurer, an
Assistant Treasurer, the Secretary or an Assistant Secretary of the Company or
ADT Limited, as the case may be, and delivered to the Trustee.

            "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company, including an employee of the Company, and who shall be
acceptable to the Trustee.

            "Outstanding", when used with respect to the Securities, means, as
of the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except:

            (i)   Securities theretofore cancelled by the Trustee or delivered
      to the Trustee for cancellation;

            (ii)  Securities, or portions thereof, for whose payment money in
      the necessary amount has been theretofore deposited with the Trustee or
      any Paying Agent (other than the Company) in trust or set aside and
      segregated in trust by the Company (if the Company shall act as its own
      Paying Agent) for the Holders of such Securities;

            (iii) Securities, except to the extent provided in Sections 1102
      and 1103, with respect to which the Company has effected defeasance
      and/or covenant defeasance as provided in Article Eleven; and

            (iv)  Securities which have been paid pursuant to Section 306 or
      in exchange for or in lieu of which other Securities have been
      authenticated and delivered pursuant to this Indenture, other than any
      such Securities in respect of which there shall have been presented to
      the Trustee proof satisfactory to it that such Securities are held by a
      bona fide purchaser in whose hands the Securities are valid obligations
      of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by TIA Section 313, Securities
owned by the Company or any Guarantor or any Affiliate of the Company or any
Guarantor shall be disregarded and deemed not to be Outstanding, except that,
in determining whether the Trustee shall be protected in making such
calculation or in relying upon any such request, demand, authorization,
direction, notice, consent or waiver, only Securities which the Trustee knows
to be so owned shall be so disregarded.  Securities so owned which have been
pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
Guarantor or any Affiliate of the Company or any Guarantor.

            "Paying Agent" means any Person (including the Company acting as
Paying Agent) authorized by the Company to pay the principal of (and premium,
if any, on) or interest on any Securities on behalf of the Company.

            "Permitted Non-Guarantor Indebtedness" means any of the following:

            (i)   Indebtedness of any Non-Guarantor outstanding on the date
      hereof and Indebtedness under the Canadian Revolving Credit Lines;

            (ii)  obligations of any Non-Guarantor pursuant to interest rate
      contracts designed to protect such Non-Guarantor against fluctuations in
      interest rates and exchange rates in respect of Indebtedness of such
      Non-Guarantor, to the extent the notional principal amount of such
      obligations does not exceed the aggregate principal amount of the
      Indebtedness to which such interest rate contracts relate;

            (iii) obligations of any Non-Guarantor pursuant to foreign exchange
      contracts designed to protect such Non-Guarantor against fluctuations in
      currency values and entered into in the ordinary course of business and
      not for purposes of speculation;

            (iv)  Indebtedness of any Non-Guarantor owing to the Company or to
      ADT Limited or any of its Wholly Owned Restricted Subsidiaries;
      provided, however, that (A) any disposition, pledge or transfer of any
      such Indebtedness to a Person (other than to a Wholly Owned Restricted
      Subsidiary of ADT Limited) shall be deemed to be an incurrence of such
      Indebtedness by the obligor not permitted by this clause and (B) any
      transaction by which any Non-Guarantor that has any Indebtedness owing to
      another Restricted Subsidiary ceases to be a Restricted Subsidiary shall
      be deemed to be the incurrence of Indebtedness by such Non-Guarantor
      that is not permitted by this clause;

            (v)   Indebtedness of any Non-Guarantor consisting of guarantees,
      indemnities, surety or performance bonds or obligations in respect of
      purchase price adjustments in connection with the acquisition or
      disposition of assets;

            (vi)  Indebtedness in respect of letters of credit, surety bonds
      and performance bonds provided in the ordinary course of business;

            (vii) any renewals, extensions, substitutions, refinancings or
      replacements of any Indebtedness described in the foregoing clauses (i)
      through (vi) so long as (A) the principal amount of any such new
      Indebtedness (including any unused or revolving commitment thereunder)
      does not exceed the principal amount (including any unused or revolving
      commitment) (or, if such Indebtedness provides for an amount less than
      the principal amount thereof to be payable upon acceleration, such
      lesser amount) so refinanced, plus the amount of any premium required to
      be paid under the terms of the instrument governing such Indebtedness
      being so refinanced or the amount of any premium reasonably determined
      by the Non-Guarantor as necessary to accomplish such refinancing through
      means of a tender offer or privately negotiated transaction, (B) if such
      Indebtedness is Subordinated Indebtedness, such new Indebtedness is made
      subordinate to the Securities at least to the same extent as the
      Indebtedness being refinanced and (C) such new Indebtedness has an
      Average Life to Stated Maturity and final Stated Maturity of principal
      that equals or exceeds the Average Life to Stated Maturity and final
      Stated Maturity of the Indebtedness being refinanced;

            (viii) Indebtedness arising from the honoring by a bank or other
      financial institution of a check, draft or similar instrument
      inadvertently drawn against insufficient funds in the ordinary course of
      business; provided that such Indebtedness is extinguished within two
      Business Days of its incurrence; and

            (ix)  Indebtedness in addition to that permitted by clauses (i)
      through (viii) above, that, together with any other outstanding
      Indebtedness (including Attributable Debt) incurred pursuant to this
      clause (ix) has (without duplication) an aggregate principal amount not
      in excess of 10% of Consolidated Tangible Assets of ADT Limited at the
      date of incurrence.

            "Person" means any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization
or government or any agency or political subdivision thereof.

            "Post-Merger Entity" means (i) any of Tyco and its Subsidiaries
and (ii) any other Subsidiary of ADT Limited created or acquired after the
consummation of the merger between Tyco and Limited Apache, Inc., a
Wholly-Owned Subsidiary of ADT Limited and a Massachusetts corporation,
pursuant to the Agreement and Plan of Merger, dated as of March 17, 1997,
among Tyco, Limited Apache, Inc. and ADT Limited.

            "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that
evidenced by such particular Security; and, for the purposes of this
definition, any Security authenticated and delivered under Section 306 in
exchange for a mutilated security or in lieu of a lost, destroyed or stolen
Security shall be deemed to evidence the same debt as the mutilated, lost,
destroyed or stolen Security.

            "Preferred Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated,
whether voting or non-voting) of such Person's preferred or preference stock
whether now outstanding or issued after the date hereof, including, without
limitation, all classes and series of preferred or preference stock.

            "Redeemable Capital Stock" means any Capital Stock of the Company,
ADT Limited or any other Restricted Subsidiary that, either by its terms, by
the terms of any security into which it is convertible or exchangeable or
otherwise, (i) is or upon the happening of an event or passage of time would
be required to be redeemed (for consideration other than shares of the common
equity capital of ADT Limited) on or prior to the final Stated Maturity of the
Securities, (ii) is redeemable at the option of the holder thereof (for
consideration other than shares of the common equity capital of ADT Limited) at
any time prior to  such final Stated Maturity, or (iii) is convertible into or
exchangeable for debt securities at any time prior to such final Stated
Maturity.

            "Reference Banks" means each of The Chase Manhattan Bank and
Midland Bank plc.

            "Regular Record Date" for the interest payable on any Interest
Payment Date means the January 15 or July 15 (whether or not a Business Day),
as the case may be, next preceding such Interest Payment Date.

            "Responsible Officer", when used with respect to the Trustee,
means any officer within the Corporate Trust Office of the trustee including
the chairman or any vice-chairman of the board of directors, the chairman or
any vice-chairman of the executive committee of the board of directors, the
chairman of the trust committee, the president, any vice president, the
secretary, any assistant secretary, the treasurer, any assistant treasurer,
the cashier, any assistant cashier, any trust officer or assistant trust
officer, the controller or any assistant controller or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above-designated officers, with the direct responsibility for the
administration of this Indenture on behalf of the Trustee and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of such officer's knowledge of and familiarity with
the particular subject.

            "Restricted Subsidiary" means any Subsidiary of ADT Limited,
including, without limitation, the Company, other than an Unrestricted
Subsidiary.

            "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

            "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

            "Senior Subordinated Note Indenture" means the indenture dated as
of August 4, 1993, as amended, among the Company, as issuer, ADT Limited, as
guarantor, and The Bank of New York, as trustee, relating to the Company's
9-1/4% Senior Subordinated Notes due 2003, as such indenture may be amended or
supplemented from time to time by one or more indentures supplemental thereto
entered into pursuant to the applicable provisions thereof.

            "Senior Subordinated Notes" means the 9-1/4% Senior Subordinated
Notes due 2003 of the Company issued pursuant to the Senior Subordinated Note
Indenture.

            "Special Record Date" for the payment of any Defaulted Interest
means a date fixed by the Trustee pursuant to Section 307.

            "Stated Maturity", when used with respect to any Indebtedness or
any installment of principal thereof or interest thereon, means the date
specified in such Indebtedness as the fixed date on which the principal of
such Indebtedness or such installment of principal or interest is due and
payable.

            "Subordinated Indebtedness" means Indebtedness of any Person that
by its terms is subordinated in right of payment to other Indebtedness of such
Person and shall be deemed to include Redeemable Capital Stock.

            "Subsidiary" means, with respect to any Person, any corporation of
which, at the time of determination, such person, directly or indirectly
through one or more Subsidiaries, owns more than 50% of the Voting Stock.

            "Subsidiary Guarantor" means any Guarantor that is a Restricted
Subsidiary, other than a Restricted Subsidiary that is a direct or indirect
parent of the Company.

            "Surviving Entity" has the meaning specified in Section 801 hereof.

            "Trust Indenture Act" or "TIA" means the Trust Indenture Act of
1939, as amended, as in force at the date as of which this Indenture was
executed, except as provided in Section 905.

            "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

            "Tyco" means Tyco International Limited, a Massachusetts
corporation.

            "Unrestricted Subsidiary" means (a) any Post-Merger Entity and (b)
any Subsidiary of ADT Limited that at the time of determination shall be
designated an Unrestricted Subsidiary by the Board of Directors in the manner
provided below and (c) any Subsidiary of an Unrestricted Subsidiary.  The
Board of Directors may designate any Subsidiary of ADT Limited (including any
newly acquired or newly formed subsidiary) to be an Unrestricted Subsidiary if
such Subsidiary of ADT Limited is a Subsidiary (a) no portion of the
Indebtedness or any other obligation (contingent or otherwise) of which (i) is
guaranteed by the Company, ADT Limited or any other Restricted Subsidiary,
(ii) is recourse to or obligates the Company, ADT Limited or any other
Restricted Subsidiary in any way or (iii) subjects any property or asset of
the Company, ADT Limited or any other Restricted Subsidiary, directly or
indirectly, contingently or otherwise, to satisfaction thereof, (b) which has
no Indebtedness or any other obligation that, if in default in any respect
(including a non-payment default), would permit (upon notice, lapse of time or
both) any holder of any other Indebtedness of the Company, ADT Limited or any
other Restricted Subsidiary to declare a default on such other Indebtedness or
cause the payment thereof to be accelerated or payable prior to its Stated
Maturity, (c) with which the Company, ADT Limited or any other Restricted
Subsidiary has no contract, agreement, arrangement, understanding or
obligation of any kind, whether written or oral, other than a transaction on
terms no less favorable to the Company, ADT Limited or any other Restricted
Subsidiary than those that might be obtained at the time from Persons who are
not Affiliates of the Company or ADT Limited, and (d) with which neither the
Company, ADT Limited nor any other Restricted Subsidiary has any obligation
(i) to subscribe for additional shares of Capital Stock, or other equity
interest therein, or (ii) to maintain or preserve such Restricted Subsidiary's
financial condition or to cause such Restricted Subsidiary to achieve certain
levels of operating results; provided, however, that in no event shall any
Guarantor be deemed an Unrestricted Subsidiary.  The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided
that immediately after giving effect to such designation (A) any Indebtedness
or Liens of such Unrestricted Subsidiary would be permitted to be incurred by
such Restricted Subsidiary under this Indenture and (B) no Default or Event of
Default shall have occurred and be continuing.  Any such designation by the
Board of Directors shall be evidenced to the Trustees by promptly filing with
each of the Trustees a copy of the Board Resolution giving effect to such
designation and an Officers' Certificate certifying that such designation
complied with the foregoing provisions.  A designation of an Unrestricted
Subsidiary as a Restricted Subsidiary may not thereafter be rescinded.

            "U.S. Government Obligations" means securities that are (i) direct
obligations of the United States of America  for the timely payment of which
its full faith and credit is pledged or (ii) obligations of a Person
controlled or supervised by and acting as an agency or instrumentality of the
United States of America the timely payment of which is unconditionally
guaranteed as a full faith and credit obligation by the United States of
America, which, in either case, are not callable or redeemable at the option
of the issuer thereof, and shall also include a depository receipt issued by a
bank (as defined in Section 3(a)(2) of the Securities Act of 1933, as
amended), as custodian with respect to any such U.S. Government Obligation or
a specific payment of principal of or interest on any such U.S. Government
Obligation held by such custodian for the account of the holder of such
depository receipt; provided that (except as required by law) such custodian
is not authorized to make any deduction from the amount payable to the holder
of such depository receipt from any amount received by the custodian in
respect of the U.S. Government Obligation or the specific payment of principal
of or interest on the U.S. Government Obligation evidenced by such depository
receipt.

            "Vice President", when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president".

            "Voting Stock" means stock of the class or classes pursuant to
which the holders thereof have the general voting power under ordinary
circumstances to elect at least a majority of the board of directors, managers
or trustees of a corporation (irrespective of whether or not at the time stock
of any other class or classes shall have or might have voting power by reason
of the happening of any contingency).

            "Wholly Owned Restricted Subsidiary" means (i) a Subsidiary all
the Capital Stock (other than directors' qualifying shares that are required
under applicable law) of which is owned by ADT Limited or another Wholly Owned
Restricted Subsidiary of ADT Limited and (ii) ADT Finance Inc., a Canadian
corporation, if and only if and for so long as, the Capital Stock of ADT
Finance Inc. consists entirely of Voting Stock, 100% of which is owned
directly or indirectly by ADT Limited, and Non-Voting Exchangeable Shares,
Series A, or any successor corporation of ADT Finance Inc. incorporated under
the laws of Canada, provided that the Capital Stock of such successor shall
consist entirely of Voting Stock, 100% of which is owned directly or
indirectly by ADT Limited, and Finance Canada Preferred Stock.

            SECTION 102.   Compliance Certificates and Opinions.

            Upon any application or request by the Company or ADT Limited, on
its own behalf or on behalf of any Guarantor, to the Trustee to take any
action under any provision of this Indenture, the Company or ADT Limited, as
the case may be, shall furnish to the Trustee an Officers' Certificate stating
that all conditions precedent, if any, provided for in this Indenture
(including any covenant compliance with which constitutes a condition
precedent) relating to the proposed action have been complied with and an
Opinion of Counsel stating that in the opinion of such counsel all such
conditions precedent, if any, have been complied with, except that in the case
of any such application or request as to which the furnishing of such
documents is specifically required by any provision of this Indenture relating
to such particular application or request, no additional certificate or
opinion need be furnished.

            Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1008(a)) shall include:

            (1)   a statement that each Person signing such certificate or
      opinion has read such covenant or condition and the definitions herein
      relating thereto;

            (2)   a brief statement as to the nature and scope of the
      examination or investigation upon which the statements or opinions
      contained in such certificate or opinion are based;

            (3)   a statement that, in the opinion of each such Person, he has
      made such examination or investigation as is necessary to enable him to
      express an informed opinion as to whether or not such covenant or
      condition has been complied with; and

            (4)   a statement as to whether, in the opinion of each such
      Person, such condition or covenant has been complied with.

            SECTION 103.   Form of Documents Delivered to Trustee.

            In any case where several matters are required to be certified by,
or covered by an opinion of, any specified Person, it is not necessary that
all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion with respect to some matters and
one or more other such Persons as to other matters, and any such Person may
certify or give an opinion as to such matters in one or several documents.

            Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which his
certificate or opinion is based are erroneous.  Any such certificate or Opinion
of Counsel may be based, insofar as it relates to factual matters, upon a
certificate or opinion of, or representations by, an officer or officers of
the Company or such Guarantor stating that the information with respect to
such factual matters is in the possession of the Company or such Guarantor,
unless such counsel knows, or in the exercise of reasonable care should know,
that the certificate or opinion or representations with respect to such
matters are erroneous.

            Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

            SECTION 104.   Acts of Holders.

            (a)   Any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or
taken by Holders may be embodied in and evidenced by one or more instruments
of substantially similar tenor signed by such Holders in person or by agents
duly appointed in writing; and, except as herein otherwise expressly provided,
such action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the
Company or any Guarantor.  Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as
the "Act" of the Holders signing such instrument or instruments.  Proof of
execution of any such instrument or of a writing appointing any such agent
shall be sufficient for any purpose of this Indenture and conclusive in favor
of the Trustee, the Company and each Guarantor, if made in the manner provided
in this Section.

            (b)   The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized
by law to take acknowledgments of deeds, certifying that the individual
signing such instrument or writing acknowledged to him the execution thereof.
Where such execution is by a signer acting in a capacity other than his
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of authority.  The fact and date of the execution of any such
instrument or writing, or the authority of the Person executing the same, may
also be proved in any other manner which the Trustee deems sufficient.

            (c)   The principal amount and serial numbers of Securities held
by any Person, and the date of holding the same, shall be proved by the
Security Register.

            (d)   If the Company shall solicit from the Holders of Securities
any request, demand, authorization, direction, notice, consent, waiver or
other Act, the Company may, at its option, by or pursuant to Board Resolution,
fix in advance a record date for the determination of Holders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or
other Act, but the Company shall have no obligation to do so.  Notwithstanding
TIA Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in
connection therewith and not later than the date such solicitation is
completed.  If such a record date is fixed, such request, demand,
authorization, direction, notice, consent, waiver or other Act may be given
before or after such record date, but only the Holders of record at the close
of business on such record date shall be deemed to be Holders for the purposes
of determining whether Holders of the requisite proportion of Outstanding
Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that
purpose the Outstanding Securities shall be computed as of such record date;
provided that no such authorization, agreement or consent by the Holders on
such record date shall be deemed effective unless it shall become effective
pursuant to the provisions of this Indenture not later than 11 months after
the record date.

            (e)   Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security  and the Holder of every Security issued
upon the registration of transfer thereof or in exchange therefor or in lieu
thereof in respect of anything done, omitted or suffered to be done by the
Trustee, the Company or any Guarantor in reliance thereon, whether or not
notation of such action is made upon such Security.

            SECTION 105.   Notices, etc., to Trustee, Company, Guarantors and
Agent.

            Any request, demand, authorization, direction, notice, consent,
waiver or Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

            (1)   the Trustee by any Holder or by the Company or any Guarantor
      shall be sufficient for every purpose hereunder if made, given,
      furnished or filed in writing to or with the Trustee at its Corporate
      Trust Office, Attention:  Corporate Trust Administration,

            (2)   the Company or any Guarantor by the Trustee or by any Holder
      shall be sufficient for every purpose hereunder (unless otherwise herein
      expressly provided) if in writing and mailed, first-class postage
      prepaid, to the Company or such Guarantor addressed to the Company or
      such Guarantor at the address of the Company's principal office
      specified in the first paragraph of this Indenture, or at any other
      address previously furnished in writing to the Trustee by the Company or
      such Guarantor, or

            (3)   the Agent by the Company, any Guarantor, the Trustee or any
      Holder shall be sufficient for any purpose hereunder if made, given,
      furnished or delivered, in writing to or with the Agent addressed to it
      c/o The Bank of Nova Scotia, Atlanta Agency, Suite 2700, 600 Peachtree
      Street N.E., Atlanta, Georgia 30308, Attention:  ADT Operations Account
      Officer or at any other address previously furnished in writing to the
      Company and the Trustee by the Agent.

            SECTION 106.   Notice to Holders; Waiver.

            Where this Indenture provides for notice of any event to Holders
by the Company, any Guarantor or the Trustee, such notice shall be
sufficiently given (unless otherwise herein expressly provided) if in writing
and  mailed, first-class postage prepaid, to each Holder affected by such
event, at his address as it appears in the Security Register, not later than
the latest date, and not earlier than the earliest date, prescribed for the
giving of such notice.  In any case where notice to Holders is given by mail,
neither the failure to mail such notice, nor any defect in any notice so
mailed, to any particular Holder shall affect the sufficiency of such notice
with respect to other Holders.  Any notice mailed to a Holder in the manner
herein prescribed shall be conclusively deemed to have been received by such
Holder, whether or not such Holder actually receives such notice.  Where this
Indenture provides for notice in any manner, such notice may be waived in
writing by the Person entitled to receive such notice, either before or after
the event, and such waiver shall be the equivalent of such notice.  Waivers of
notice by Holders shall be filed with the Trustee, but such filing shall not
be a condition precedent to the validity of any action taken in reliance upon
such waiver.

            In case by reason of the suspension of or irregularities in
regular mail service or by reason of any other cause, it shall be
impracticable to mail notice of any event to Holders when such notice is
required to be given pursuant to any provision of this Indenture, then any
manner of giving such notice as shall be satisfactory to the Trustee shall be
deemed to be a sufficient giving of such notice for every purpose hereunder.

            SECTION 107.   Effect of Headings and Table of Contents.

            The Article and Section headings herein and the Table of Contents
are for convenience only and shall not affect the construction hereof.

            SECTION 108.   Successors and Assigns.

            All covenants and agreements in this Indenture by the Company and
the Guarantors shall bind their respective successors and assigns, whether so
expressed or not.

            SECTION 109.   Separability Clause.

            In case any provision in this Indenture or in the Securities or
the Guarantees shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way
be affected or impaired thereby.

            SECTION 110.   Benefits of Indenture.

            Nothing in this Indenture, the Securities or the Guarantees,
express or implied, shall give to any Person, other than the parties hereto,
any Paying Agent, any Security Registrar and their successors hereunder and
the Holders, any benefit or any legal or equitable right, remedy or claim
under this Indenture.

            SECTION 111.   Governing Law.

            This Indenture, the Securities and the Guarantees shall be
governed by and construed in accordance with the law of the State of New York.
This Indenture is subject to the provisions of the Trust Indenture Act that
are required to be part of this Indenture and shall, to the extent applicable,
be governed by such provisions.

            SECTION 112.   Legal Holidays.

            In any case where any Interest Payment Date, or Stated Maturity or
Maturity of any Security shall not be a Business Day, then (notwithstanding
any other provision of this Indenture, the Securities or the Guarantees)
payment of interest or principal (and premium, if any) need not be made on
such date, but may be made on the next succeeding Business Day with the same
force and effect as if made on the Interest Payment Date, or at the Stated
Maturity or Maturity; provided that no interest shall accrue for the period
from and after such Interest Payment Date, Stated Maturity or Maturity, as the
case may be.

            SECTION 113.   No Recourse Against Others.

            A director, officer, employee or stockholder, as such, of the
Company or any Guarantor shall not have any liability for any obligations of
the Company or such Guarantor, as the case may be, under the Securities, this
Indenture or the Guarantees or for any claim based on, in respect of or by
reason of such obligations or their creation.  Each Holder by accepting any of
the Securities waives and releases all such liability.

            SECTION 114.   Submission to Jurisdiction.

            The Company and each Guarantor irrevocably agree that any suit,
action or proceeding against the Company or any Guarantor arising out of or
based upon this Indenture, the Securities, the Guarantees or the public
offering of the Securities may be instituted in any state or federal court  in
the Borough of Manhattan, The City of New York, New York, and irrevocably
waive, to the extent they may lawfully do so, any objection which they may now
or hereafter have to the laying of venue of any such suit, action or
proceeding, and irrevocably submit to the nonexclusive jurisdiction of such
courts in any suit, action or proceeding.  The Company and each Guarantor
hereby irrevocably appoint ADT, Inc., 1750 Clint Moore Road, P.O. Box 5035,
Boca Raton, Florida 33431, as their Authorized Agent (the "Authorized Agent")
upon whom process may be served in any suit, action or proceeding arising out
of or based on this Indenture, the Securities, the Guarantees or the public
offering of the Securities which may be instituted in any state or federal
court in the Borough of Manhattan, The City of New York, New York, and the
Company and each Guarantor expressly consent to the jurisdiction of any such
court in respect of any such suit, action or proceeding, and waive any other
requirements of or objections to personal jurisdiction with respect thereto.
The Company and each Guarantor represent and warrant that the Authorized Agent
has agreed to act as said agent for service of process, and the Company and
each Guarantor agree to take any and all action, including the filing of any
and all documents and instruments, that may be necessary to continue such
appointment in full force and effect as aforesaid.  Service of process upon
the Authorized Agent and written notice of such service to the Company or any
Guarantor shall be deemed, in every respect, effective service of process upon
the Company or such Guarantor.  The foregoing does not limit any right of the
Trustee or any Holder of a Security to institute any suit, action or
proceeding in any other court of competent jurisdiction.

                                  ARTICLE TWO

                                SECURITY FORMS

            SECTION 201.   Forms Generally.

            The Securities, the Guarantees and the Trustee's certificate of
authentication shall be in substantially the forms set forth in this Article,
with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or as may, consistently herewith, be determined by the
officers executing such Securities or Guarantees, as evidenced by their
execution of the Securities or  Guarantees.  Any portion of the text of any
Security or Guarantee may be set forth on the reverse thereof, with an
appropriate reference thereto on the face of the Security or Guarantee.

            The definitive Securities and Guarantees shall be printed,
lithographed or engraved on steel-engraved borders or may be produced in any
other manner, all as determined by the officers of the Company executing such
Securities, as evidenced by their execution of such Securities.

            SECTION 202.   Form of Face of Security.

                             ADT OPERATIONS, INC.

                          8-1/4% Senior Note due 2000

No.__________                                                    $__________

            ADT Operations, Inc., a Delaware corporation (herein called the
"Company", which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
_____________ or registered assigns, the principal sum of _________ Dollars
on August 1, 2000 at the office or agency of the Company referred to below,
and to pay interest thereon on February 1, 1994 and semi-annually thereafter,
on February 1 and August 1 in each year, from August 4, 1993, or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for, at the rate of 8-1/4% per annum, until the principal hereof is paid or
duly provided for, and (to the extent lawful) to pay on demand interest on any
overdue interest at the rate borne by the Securities from the date on which
such overdue interest becomes payable to the date payment of such interest has
been made or duly provided for.  The interest so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest, which shall be the January 15 or July 15
(whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date.  Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date, and such defaulted interest, and (to the extent lawful) interest
on such defaulted interest at the rate borne by the Securities, may be paid to
the Person in whose name this Security (or one or more Predecessor Securities)
is registered at the close of business on a Special Record Date for the
payment of such Defaulted Interest to be fixed by the Trustee, notice whereof
shall be given to Holders of Securities not less than 10 days prior to such
Special Record Date, or may be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities may be listed, and upon such notice as may be required by such
exchange, all as more fully provided in said Indenture.  Payment of the
principal of (and premium, if any, on) and interest on this Security will be
made at the office or agency of the Company maintained for that purpose in The
City of New York, or at such other office or agency of the Company as may be
maintained for such purpose, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that payment of interest may be made at the
option of the Company (i) by check mailed to the address of the Person
entitled thereto as such address shall appear on the Security Register or (ii)
by transfer to an account maintained by the payee located in the United States.

            Reference is hereby made to the further provisions of this
Security set forth on the reverse hereof, which further provisions shall for
all purposes have the same effect as if set forth at this place.

            This Security is entitled to the benefits of the Guarantees issued
by each Guarantor of the punctual payment when due of the Guaranteed
Obligations made in favor of the Trustee for the benefit of the Holder.
Reference is hereby made to Article Twelve of the Indenture for a statement of
the respective rights, limitations of rights, duties and obligations under the
Guarantees of the Guarantors, the Trustee and the Holders.

            Unless the certificate of authentication hereon has been duly
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be entitled to any benefit under the Indenture, or be
valid or obligatory for any purpose.

            IN WITNESS WHEREOF, the Company has caused this instrument to be
duly executed under its corporate seal.

Dated:                                          ADT OPERATIONS, INC.

          [SEAL]                                By___________________
Attest:

_______________________
 Authorized Signature

            SECTION 203.   Form of Reverse of Security.

            This Security is one of a duly authorized issue of securities of
the Company designated as its 8-1/4% Senior Notes due 2000 (herein called the
"Securities"), limited (except as otherwise provided in the Indenture referred
to below) in aggregate principal amount to $250,000,000, which may be issued
under an indenture (herein called the "Indenture") dated as of August 4, 1993
between the Company, as issuer, ADT Limited, ADT General Holdings, Inc., Inc.,
ADT Security Services, Inc., ADT Security Systems, West, Inc., ADT Automotive
Holdings, Inc., ADT Automotive, Inc., AA Property Holdings Inc., ADT
Investments, Inc., AAAA Dealers Services Inc., ADT Business Holdings, Inc.,
ADT Property Holdings, Inc., ADT Security Systems Manufacturing, Inc.,
Mid-Atlantic Security, Inc., ADT Automotive Services Inc., Auction Transport
Inc., British Car Auctions Inc., CCTC International, Inc., ADT Specialty
Auctions, Inc., Flying Lion Inc. and Tri-City Auto Auction, Inc., as
guarantors, and The Chase Manhattan Bank, as trustee (herein called the
"Trustee", which term includes any successor trustee under the Indenture), as
amended and restated as of _____, 1997 (herein called the "Indenture") to
which Indenture and all indentures supplemental thereto reference is hereby
made for a statement of the respective rights, limitations of rights, duties,
obligations and immunities thereunder of the Company, the Guarantors, the
Trustee and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered.

            Upon the occurrence of a Change in Control, the Holder of this
Security may require the Company, subject to certain limitations provided in
the Indenture, to repurchase this Security at a purchase price in cash in an
amount equal to 101% of the principal amount thereof plus accrued and unpaid
interest.

            If an Event of Default shall occur and be continuing, the
principal of all the Securities may be declared due and payable in the manner
and with the effect provided in the Indenture.

            The Indenture contains provisions for defeasance at any time of
(a) the entire indebtedness of the Company on this Security and (b) certain
restrictive covenants and the related Defaults and Events of Default, upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

            The Indenture permits, with certain exceptions as therein
provided, the amendment thereof and the modification of the rights and
obligations of the Company and the Guarantors and the rights of the Holders
under the Indenture at any time by the Company, the Guarantors and the Trustee
with the consent of the Holders of a majority in aggregate principal amount of
the Securities at the time Outstanding.  The Indenture also contains
provisions permitting the Holders of specified percentages in aggregate
principal amount of the Securities at the time Outstanding, on behalf of the
Holders of all the Securities, to waive compliance by the Company and the
Guarantors with certain provisions of the Indenture and certain past defaults
under the Indenture and their consequences.  Any such consent or waiver by or
on behalf of the Holder of this Security shall be conclusive and binding upon
such Holder and upon all future Holders of this Security and of any Security
issued upon the registration of transfer hereof or in exchange herefor or in
lieu hereof whether or not notation of such consent or waiver is made upon
this Security.

            No reference herein to the Indenture and no provision of this
Security, the Guarantee endorsed hereon or the Indenture shall alter or impair
the obligation of the Company or any Guarantor (in the event any Guarantor is
obligated to make payments in respect of the Securities), which is absolute
and unconditional, to pay the principal of (and premium, if any, on) and
interest on this Security at the times, place, and rate, and in the coin or
currency, herein prescribed.

            As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registrable on the
Security Register of the Company, upon surrender of this Security for
registration of transfer at the office or agency of the Company maintained for
such purpose in The City of New York, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate principal amount, will be issued to
the designated transferee or transferees.

            The Securities are issuable only in registered form without
coupons in denominations of $1,000 and any integral multiple thereof.  As
provided in the Indenture and subject to certain limitations therein set
forth, the Securities are exchangeable for a like aggregate principal amount
of Securities of a different authorized denomination, as requested by the
Holder surrendering the same.

            No service charge shall be made for any registration of transfer
or exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith.

            Prior to the time of due presentment of this Security for
registration of transfer, the Company, the Guarantors, the Trustee and any
agent of the Company, the Guarantors or the Trustee may treat the Person in
whose name this Security is registered as the owner hereof for all purposes,
whether or not this Security be overdue, and neither the Company, the
Guarantors, the Trustee nor any agent shall be affected by notice to the
contrary.

            All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

            SECTION 204.   Form of Trustee's Certificate of Authentication.

            The Trustee's certificate of authentication shall be in
substantially the following form:

                   TRUSTEE'S CERTIFICATE OF AUTHENTICATION.

            This is one of the Securities referred to in the within-mentioned
Indenture.

Dated:                                    THE CHASE MANHATTAN BANK,
                                            as Trustee

                                          By_______________________
                                              Authorized Officer

            SECTION 205.   Form of Guarantee.

            The form of Guarantee shall be set forth on the Securities
substantially as follows:

                                   GUARANTEE

            For value received, each of the undersigned hereby irrevocably and
unconditionally guarantees, jointly and severally, on a senior basis to the
Holder of this Security and to the Trustee, on behalf of the Holder, (i) the
due and punctual payment of the principal of and interest on this Security,
when and as the same shall become due and payable, whether at Stated Maturity
or purchase upon Change in Control, and whether by declaration of
acceleration, Change in Control, call for purchase or otherwise, the due and
punctual payment of interest on the overdue principal of and interest, if any,
on this Security, to the extent lawful, and the due and punctual performance
of all other obligations of the Company to the Holder of this Security or the
Trustee all in accordance with the terms of this Security and the Indenture
and (ii) in the case of any extension of time of payment or renewal of this
Security or any of such other obligations, that the same will be promptly paid
in full when due or performed in accordance with the terms of the extension or
renewal, at Stated Maturity or purchase upon Change in Control, and whether by
declaration of acceleration, Change in Control, call for purchase or otherwise
(the obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  This Guarantee will not be valid or obligatory for any purpose
until the Trustee duly executes the certificate of authentication on the
Security upon which this Guarantee is endorsed.

Dated:

[SEAL]                                    ADT LIMITED,
                                            a Bermuda company

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT GENERAL HOLDINGS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT SECURITY SERVICES, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT SECURITY SYSTEMS, WEST, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT AUTOMOTIVE HOLDINGS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT AUTOMOTIVE, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    AA PROPERTY HOLDINGS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT INVESTMENTS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    AAAA DEALERS SERVICES INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT BUSINESS HOLDINGS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT PROPERTY HOLDINGS, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT SECURITY SYSTEMS,
                                          MANUFACTURING, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    MID-ATLANTIC SECURITY, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT AUTOMOTIVE SERVICES INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    AUCTION TRANSPORT INC.,
                                             a Missouri corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    BRITISH CAR AUCTIONS INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    CCTC INTERNATIONAL, INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    ADT SPECIALTY AUCTIONS, INC.,
                                             a Michigan corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    FLYING LION INC.,
                                             a Delaware corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    TRI-CITY AUTO AUCTION, INC.,
                                             a Washington corporation

Attest:_____________________              By_______________________
       Authorized Signature


[SEAL]                                    [LIST ADDITIONAL GUARANTORS AND
                                             JURISDICTIONS OF INCORPORATION]

Attest:_____________________              By_______________________
       Authorized Signature


                                 ARTICLE THREE

                                THE SECURITIES

            SECTION 301.   Title and Terms.

            The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is limited to $250,000,000,
except for Securities authenticated and delivered upon registration of
transfer of, or in exchange for, or in lieu of, other Securities pursuant to
Section 304, 305, 306, 906 or 1010.

            The Securities shall be known and designated as the "8-1/4% Senior
Notes due 2000" of the Company.  Their Stated Maturity shall be August 1,
2000, and they shall bear interest at the rate of 8-1/4% per annum from August
4, 1993, or from the most recent Interest Payment Date to which interest has
been paid or duly provided for, payable on February 1, 1994 and semi-annually
thereafter on February 1 and August 1 in each year and at said Stated
Maturity, until the principal thereof is paid or duly provided for.

            The principal of (and premium, if any, on) and interest on the
Securities shall be payable at the office or agency of the Company maintained
for such purpose in The City of New York, or at such other office or agency of
the Company as may be maintained for such purpose; provided, however, that, at
the option of the Company, interest may be paid by check mailed to addresses
of the Persons entitled thereto as such addresses shall appear on the Security
Register.

            SECTION 302.   Denominations.

            The Securities shall be issuable only in registered form without
coupons and only in denominations of $1,000 and any integral multiple thereof.

            SECTION 303.   Execution, Authentication, Delivery and Dating.

            The Securities shall be executed on behalf of the Company by its
Chairman, its President or a Vice President, under its corporate seal
reproduced thereon and attested by its Secretary or an Assistant Secretary.
The signature of any of these officers on the Securities may be manual or
facsimile signatures of the present or any future such authorized officer and
may be imprinted or otherwise reproduced on the Securities.

            Securities bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased
to hold such offices prior to the authentication and delivery of such
Securities or did not hold such offices at the date of such Securities.

            At any time and from time to time after the execution and delivery
of this Indenture, the Company may deliver Securities executed by the Company
to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Securities.

            Each Security shall be dated the date of its authentication.

            No Security shall be entitled to any benefit under this Indenture
or be valid or obligatory for any purpose unless there appears on such
Security a certificate of authentication substantially in the form provided
for herein duly executed by the Trustee by manual signature of an authorized
officer, and such certificate upon any Security shall be conclusive evidence,
and the only evidence, that such Security has been duly authenticated and
delivered hereunder and is entitled to the benefits of this Indenture.

            In case the Company or any Guarantor, pursuant to Article Eight,
shall be consolidated, amalgamated or merged with or into any other Person or
shall be continued or redomesticated under the laws of a jurisdiction other
than Bermuda or shall convey, transfer, lease or otherwise dispose of all or
substantially all of its properties and assets to any Person, and the
successor Person resulting from such consolidation or amalgamation, or
surviving such merger, continuance or redomestication, or into which the
Company or such Guarantor shall have been merged, or the Person which shall
have received a conveyance, transfer, lease or other disposition as aforesaid,
shall have executed an indenture supplemental hereto with the Trustee pursuant
to Article Eight, any of the Securities authenticated or delivered prior to
such consolidation, amalgamation, merger, continuance, redomestication,
conveyance, transfer, lease or other disposition may, from time to time, at
the request of the successor Person, be exchanged for other Securities
executed in the name of the successor Person with such changes in phraseology
and form as may be appropriate, but otherwise in substance of like tenor as the
Securities surrendered for such exchange and of like principal amount; and the
Trustee, upon Company Request of the successor Person, shall authenticate and
deliver Securities as specified in such request for the purpose of such
exchange.  If Securities shall at any time be authenticated and delivered in
any new name of a successor Person pursuant to this Section in exchange or
substitution for or upon registration of transfer of any Securities, such
successor Person, at the option of the Holders but without expense to them,
shall provide for the exchange of all Securities at the time Outstanding for
Securities authenticated and delivered in such new name.

            SECTION 304.   Temporary Securities.

            Pending the preparation of definitive Securities, the Company may
execute, the Guarantors may endorse Guarantees on, and upon Company Order the
Trustee shall authenticate and deliver temporary Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive
Securities in lieu of which they are issued and with such appropriate
insertions, omissions, substitutions and other variations as the officers
executing such Securities may determine, as conclusively evidenced by their
execution of such Securities.

            If temporary Securities are issued, the Company will cause
definitive Securities to be prepared without unreasonable delay.  After the
preparation of definitive Securities, the temporary Securities shall be
exchangeable for definitive Securities upon surrender of the temporary
Securities at the office or agency of the Company designated for such purpose
pursuant to Section 1002, without charge to the Holder.  Upon surrender for
cancellation of any one or more temporary Securities, the Company shall
execute, the Guarantors shall endorse Guarantees on, and upon Company Order
the Trustee shall authenticate and deliver in exchange therefor a like
principal amount of definitive Securities of authorized denominations.  Until
so exchanged, the temporary Securities shall in all respects be entitled to
the same benefits under this Indenture as definitive Securities.

            SECTION 305.   Registration, Registration of Transfer and Exchange.

            The Company shall cause to be kept at the Corporate Trust Office
of the Trustee a register (the register maintained in such office and in any
other office or agency designated pursuant to Section 1002 being herein
sometimes referred to as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Securities and of transfers of Securities.  The Security
Register shall be in written form or any other form capable of being converted
into written form within a reasonable time.  At all reasonable times, the
Security Register shall be open to inspection by the Trustee.  The Trustee is
hereby initially appointed as security registrar (the "Security Registrar")
for the purpose of registering Securities and transfers of Securities as
herein provided.

            Upon surrender for registration of transfer of any Security at the
office or agency of the Company designated pursuant to Section 1002, the
Company shall execute, the Guarantors shall endorse Guarantees on, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Securities of any authorized
denomination or denominations of a like aggregate principal amount.

            At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination and of a like aggregate principal
amount, upon surrender of the Securities to be exchanged at such office or
agency.  Whenever any Securities are so surrendered for exchange, the Company
shall execute, the Guarantors shall endorse Guarantees on, and the Trustee
shall authenticate and deliver the Securities which the Holder making the
exchange is entitled to receive.

            All Securities issued upon any registration of transfer or
exchange of Securities shall be the valid obligations of the Company and the
Guarantors, evidencing the same debt, and entitled to the same benefits under
this Indenture, as the Securities surrendered upon such registration of
transfer or exchange.

            Every Security presented or surrendered for registration of
transfer or for exchange shall (if so required by the Company or the Security
Registrar) be duly endorsed, or be accompanied by a written instrument of
transfer, in form satisfactory to the Company and the Security Registrar, duly
executed by the Holder thereof or his attorney duly authorized in writing.

            No service charge shall be made for any registration of transfer
or exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of transfer or exchange of Securities,
other than exchanges pursuant to Section 304, 906 or 1010 not involving any
transfer.

            SECTION 306.   Mutilated, Destroyed, Lost and Stolen Securities.

            If (i) any mutilated Security is surrendered to the Trustee, or
(ii) the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them
to save each of them harmless, then, in the absence of notice to the Company
or the Trustee that such Security has been acquired by a bona fide purchaser,
the Company shall execute, the Guarantors shall endorse a Guarantee on and
upon Company Order the Trustee shall authenticate and deliver, in exchange for
any such mutilated Security or in lieu of any such destroyed, lost or stolen
Security, a new Security of like tenor and principal amount, bearing a number
not contemporaneously outstanding.

            In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

            Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

            Every new Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company and the Guarantors, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

            The provisions of this Section are exclusive and shall preclude
(to the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Securities.

            SECTION 307.   Payment of Interest; Interest Rights Preserved.

            Interest on any Security which is payable, and is punctually paid
or duly provided for, on any Interest Payment Date shall be paid to the Person
in whose name such Security (or one or more Predecessor Securities) is
registered at the close of business on the Regular Record Date for such
interest at the office or agency of the Company maintained for such purpose
pursuant to Section 1002; provided, however, that each installment of interest
may at the Company's option be paid by (i) mailing a check for such interest,
payable to or upon the written order of the Person entitled thereto pursuant
to Section 308, to the address of such Person as it appears in the Security
Register or (ii) transfer to an account maintained by the payee located in the
United States.

            Any interest on any Security which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date shall
forthwith cease to be payable to the Holder on the Regular Record Date by
virtue of having been such Holder, and such defaulted interest and (to the
extent lawful) interest on such defaulted interest at the rate borne by the
Securities (such defaulted interest and interest thereon herein collectively
called "Defaulted Interest") may be paid by the Company, at its election in
each case, as provided in clause (1) or (2) below:

            (1)   The Company may elect to make payment of any Defaulted
      Interest to the Persons in whose names the Securities (or their
      respective Predecessor Securities) are registered at the close of
      business on a Special Record Date for the payment of such Defaulted
      Interest, which shall be fixed in the following manner.  The Company
      shall notify the Trustee in writing of the amount of Defaulted Interest
      proposed to be paid on each Security and the date of the proposed
      payment, and at the same time the Company shall deposit with the Trustee
      an amount of money equal to the aggregate amount proposed to be paid in
      respect of such Defaulted Interest or shall make arrangements
      satisfactory to the Trustee for such deposit prior to the date of the
      proposed payment, such money when deposited to be held in trust for the
      benefit of the Persons entitled to such Defaulted Interest as in this
      clause provided.  Thereupon the Trustee shall fix a Special Record Date
      for the payment of such Defaulted Interest which shall be not more than
      15 days and not less than 10 days prior to the date of the proposed
      payment and not less than 10 days after the receipt by the Trustee of the
      notice of the proposed payment.  The Trustee shall promptly notify the
      Company of such Special Record Date, and in the name and at the expense
      of the Company, shall cause notice of the proposed payment of such
      Defaulted Interest and the Special Record Date therefor to be given in
      the manner provided for in Section 106, not less than 10 days prior to
      such Special Record Date.  Notice of the proposed payment of such
      Defaulted Interest and the Special Record Date therefor having been so
      given, such Defaulted Interest shall be paid to the Persons in whose
      names the Securities (or their respective Predecessor Securities) are
      registered at the close of business on such Special Record Date and
      shall no longer be payable pursuant to the following clause (2).

            (2)   The Company may make payment of any Defaulted Interest in
      any other lawful manner not inconsistent with the requirements of any
      securities exchange on which the Securities may be listed, and upon such
      notice as may be required by such exchange, if, after notice given by
      the Company to the Trustee of the proposed payment pursuant to this
      clause, such manner of payment shall be deemed practicable by the
      Trustee.

            Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

            SECTION 308.   Persons Deemed Owners.

            Prior to the due presentment of a Security for registration of
transfer, the Company, the Guarantors, the Trustee and any agent of the
Company, any Guarantor or the Trustee may treat the Person in whose name such
Security is registered as the owner of such Security for the purpose of
receiving payment of principal of (and premium, if any, on) and (subject to
Sections 305 and 307) interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and none of the Company,
any Guarantor, the Trustee or any agent of the Company, any Guarantor or the
Trustee shall be affected by notice to the contrary.

            SECTION 309.   Cancellation.

            All Securities surrendered for payment, registration of transfer
or exchange shall, if surrendered to any Person other than the Trustee, be
delivered to the Trustee and shall be promptly cancelled by it.  The Company
may at any time deliver to the Trustee for cancellation any Securities
previously authenticated and delivered hereunder which the Company may have
acquired in any manner whatsoever, and may deliver to the Trustee (or to any
other Person for delivery to the Trustee) for cancellation any Securities
previously authenticated hereunder which the Company has not issued and sold,
and all Securities so delivered shall be promptly cancelled by the Trustee.
If the Company shall so acquire any of the Securities, however, such
acquisition shall not operate as satisfaction of the indebtedness represented
by such Securities unless and until the same are surrendered to the Trustee for
cancellation.  No Securities shall be authenticated in lieu of or in exchange
for any Securities cancelled as provided in this Section, except as expressly
permitted by this Indenture.  All cancelled Securities held by the Trustee
shall be disposed of by the Trustee in accordance with its customary
procedures and certification of their disposal delivered to the Company unless
by Company Order the Company shall direct that cancelled Securities be
returned to it.

            SECTION 310.   Computation of Interest.

            Interest on the Securities shall be computed on the basis of a
360-day year of twelve 30-day months.

            SECTION 311.   Designation as Senior Indebtedness.
            The Company hereby confirms the designation of the Securities as
"Senior Indebtedness" for the purposes of the Senior Subordinated Note
Indenture.

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

            SECTION 401.   Satisfaction and Discharge of Indenture.

            This Indenture shall upon Company Request cease to be of further
effect (except as to surviving rights of registration of transfer or exchange
of Securities herein expressly provided for) and the Trustee, at the expense
of the Company, shall execute proper instruments acknowledging satisfaction
and discharge of this Indenture when

            (1)  either

                  (a)   all Securities theretofore authenticated and delivered
            (other than (i) Securities which have been destroyed, lost or
            stolen and which have been replaced or paid as provided in Section
            306 and (ii) Securities for whose payment money has theretofore
            been deposited in trust with the Trustee or any Paying Agent or
            segregated and held in trust by the Company and thereafter repaid
            to the Company or discharged from such trust, as provided in
            Section 1003) have been delivered to the Trustee for cancellation;
            or

                  (b)   all such Securities not theretofore delivered to the
            Trustee for cancellation

                        (i) have become due and payable, or

                        (ii) will become due and payable at their Stated
                  Maturity within one year,

            and the Company in the case of (i) or (ii) above, has irrevocably
            deposited or caused to be deposited with the Trustee as trust
            funds in trust for the purpose an amount sufficient to pay and
            discharge the entire indebtedness on such Securities not
            theretofore delivered to the Trustee for cancellation, for
            principal (and premium, if any) and interest to the date of such
            deposit (in the case of Securities which have become due and
            payable) or to the Stated Maturity, as the case may be;

            (2)   the Company has paid or caused to be paid all other sums
      payable hereunder by the Company; and

            (3)   the Company has delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that (i) all
      conditions precedent herein provided for relating to the satisfaction
      and discharge of this Indenture have been complied with and (ii) such
      satisfaction and discharge will not result in a breach or violation of,
      or constitute a default hereunder or under any other material agreement
      or instrument to which the Company or any Guarantor is a party or by
      which the Company or any Guarantor is bound.

            Notwithstanding the satisfaction and discharge of this Indenture,
the obligations of the Company and the Guarantors to the Trustee under Section
606 and, if money shall have been deposited with the Trustee pursuant to
subclause (b) of clause (1) of this Section, the obligations of the Trustee
under Section 402 and the last paragraph of Section 1003 shall survive.

            SECTION 402.   Application of Trust Money.

            Subject to the provisions of the last paragraph of Section 1003,
all money deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities
and this Indenture, to the payment, either directly or through any Paying
Agent (including the Company acting as its own Paying Agent), as the Trustee
may determine, to the Persons entitled thereto, of the principal (and premium,
if any) and interest for whose payment such money has been deposited with the
Trustee; but such money need not be segregated from other funds except to the
extent required by law.

                                 ARTICLE FIVE

                                   REMEDIES

            SECTION 501.   Events of Default.

            "Event of Default", wherever used herein, means any one of the
following events (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or
pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

            (1)   default in the payment of any interest on any Security when
      it becomes due and payable, and continuance of such default for a period
      of 30 days; or

            (2)   default in the payment of the principal of (or premium, if
      any, on) any Security at its Maturity; or

            (3)     (i) default in the performance, or breach, of any covenant
      or warranty of the Company, ADT Limited or any of the other Restricted
      Subsidiaries in this Indenture (other than a default in the performance,
      or breach, of a covenant or warranty which is specifically dealt with
      elsewhere in paragraphs (1) or (2) of this Section 501 or in clauses
      (ii) and (iii) of this paragraph (3)), and continuance of such default
      or breach for a period of 60 days after there has been given, by
      registered or certified mail, to the Company by the Trustee or to the
      Company and the Trustee by the Holders of at least 25% in principal
      amount of the Outstanding Securities a written notice specifying such
      default or breach; (ii) default in the performance or breach of the
      provisions of Article Eight hereof; or (iii) the Company shall have
      failed to make or consummate a Change in Control Offer in accordance
      with the provisions of Section 1010 hereof; or

            (4)   (i) there shall have occurred one or more defaults by the
      Company, ADT Limited or any of the other Restricted Subsidiaries in the
      payment of the principal of (or premium, if any, on) Indebtedness
      aggregating $15,000,000 or more when the same becomes due and payable at
      its final maturity or (ii) Indebtedness of the Company, ADT Limited or
      any of the other Restricted Subsidiaries aggregating $15,000,000 or more
      shall have been accelerated or otherwise declared due and payable, or
      required to be prepaid or repurchased (other than by regularly scheduled
      required prepayment or prepayments in respect of asset sales, excess
      cash flow or new financings), including amounts declared due and payable
      by virtue of any demand for cash collateralization, aggregating
      $15,000,000 or more, of any letter of credit prior to its final
      maturity; or

            (5)   any Person entitled to take the actions described in this
      Section 501(5), after the occurrence of any event of default under any
      agreement or instrument evidencing any Indebtedness in excess of
      $15,000,000 in the aggregate (which, in the case of interest rate
      contracts or exchange rate contracts, shall be deemed to be the net
      Indebtedness outstanding under such contract on the date or during any
      period during which any action described in this Section 501(5) is
      taken) of the Company, ADT Limited or any of the other Restricted
      Subsidiaries, shall notify the Trustee of the intended sale or
      disposition of any assets of the Company, ADT Limited or any of the
      other Restricted Subsidiaries that have been pledged to or for the
      benefit of such Person to secure such Indebtedness or shall commence
      proceedings, or take any action (including by way of set-off) to retain
      in satisfaction of any Indebtedness, or to collect on, seize, dispose of
      or apply, any such assets of the Company, ADT Limited or any of the
      other Restricted Subsidiaries (including funds on deposit or held
      pursuant to lock-box and other similar arrangements), pursuant to the
      terms of any agreement or instrument evidencing any such Indebtedness of
      the Company, ADT Limited or any such other Restricted Subsidiary or in
      accordance with applicable law; or

            (6)   final judgments or orders rendered against the Company, ADT
      Limited or any of the other Restricted Subsidiaries that require the
      payment in money, either individually or in an aggregate amount, of more
      than $15,000,000 (net of amounts covered by insurance) and either (i) an
      enforcement proceeding shall have been commenced by any creditor upon
      such judgment or order or (ii) there shall have been a period of 30
      consecutive days during which a stay of enforcement of such judgment or
      order, by reason of pending appeal or otherwise, was not in effect; or

            (7)   the entry of a decree or order by a court having
      jurisdiction in the premises adjudging the Company, ADT Limited or any
      other Material Restricted Subsidiary a bankrupt or insolvent, or
      approving as properly filed a petition seeking reorganization,
      arrangement, adjustment or composition of or in respect of the Company,
      ADT Limited or any other Material Restricted Subsidiary under the Federal
      Bankruptcy Code or any other applicable federal or state law, or
      appointing a receiver, liquidator, assignee, trustee, sequestrator (or
      other similar official) of the Company, ADT Limited or any other
      Material Restricted Subsidiary or of any substantial part of its
      property, or ordering the winding up or liquidation of its affairs, and
      the continuance of any such decree or order unstayed and in effect for a
      period of 90 consecutive days; or

            (8)   the institution by the Company, ADT Limited or any other
      Material Restricted Subsidiary of proceedings to be adjudicated a
      bankrupt or insolvent, or the consent by it to the institution of
      bankruptcy or insolvency proceedings against it, or the filing by it of
      a petition or answer or consent seeking reorganization or relief under
      the Federal Bankruptcy Code or any other applicable federal or state
      law, or the consent by it to the filing of any such petition or to the
      appointment of a receiver, liquidator, assignee, trustee, sequestrator
      (or other similar official) of the Company, ADT Limited or any other
      Material Restricted Subsidiary or of any substantial part of its
      property, or the making by it of an assignment for the benefit of
      creditors, or the admission by it in writing of its inability to pay its
      debts generally as they become due; or

            (9)   any Guarantee shall for any reason cease to be, or be
      asserted in writing by any Guarantor thereof or the Company not to be,
      in full force and effect, and enforceable in accordance with its terms
      (other than by reason of the termination of this Indenture or the
      release of any such Guarantee in accordance with this Indenture);
      provided, however, that if the Company or any Guarantor asserts in
      writing that any Guarantee is not in full force and effect and
      enforceable in accordance with its terms, such assertion shall not
      constitute an Event of Default for purposes of this paragraph (10) if
      (x) such written assertion is accompanied by an Opinion of Counsel to
      the effect that, as a matter of law, the defect or defects rendering
      such Guarantee unenforceable can be remedied within 10 days of the date
      of such assertion, (y) the Company or such Guarantor delivers an
      Officers' Certificate to the effect that the Company or such Guarantor
      represents that such defect or defects shall be so remedied within such
      10-day period, and (z) such defect or defects are in fact so remedied
      within such 10-day period.

            SECTION 502.   Acceleration of Maturity; Rescission and Annulment.

            If an Event of Default (other than an Event of Default specified
in Section 501(7) or 501(8)) occurs and is continuing, then and in every such
case the Trustee or the Holders of not less than 25% in principal amount of
the Securities Outstanding may declare all unpaid principal of (and premium,
if any, on) and any accrued interest on all the Securities to be due and
payable immediately, by a notice in writing to the Company and, if the New Bank
Credit Agreement is in effect, to the Agent (and to the Trustee if given by
Holders), and upon any such declaration such principal amount shall become due
and payable immediately.  If an Event of Default specified in Section 501(7)
or 501(8) occurs and is continuing, then the principal amount of all the
Securities shall ipso facto become and be immediately due and payable without
any declaration or other act on the part of the Trustee or any Holder.

            At any time after a declaration of acceleration has been made but
before a judgment or decree for payment of the money due has been obtained by
the Trustee as hereinafter in this Article provided, the Holders of at least a
majority in aggregate principal amount of the Securities Outstanding, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if:

            (1)   the Company has paid or deposited with the Trustee a sum
      sufficient to pay,

                  (A)   all overdue interest on all Outstanding Securities,

                  (B)   the principal of (and premium, if any, on) any
            Outstanding Securities which have become due otherwise than by
            such declaration of acceleration, and interest on such unpaid
            principal at the rate borne by the Securities,

                  (C)   to the extent that payment of such interest is lawful,
            interest on overdue interest at the rate borne by the Securities,
            and

                  (D)   all sums paid or advanced by the Trustee hereunder and
            the reasonable compensation, expenses, disbursements and advances
            of the Trustee, its agents and counsel; and

            (2)   all Events of Default, other than the non-payment of amounts
      of principal of the Securities that have become due solely by such
      declaration of acceleration, have been cured or waived as provided in
      Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.
Upon a determination by the Company that the New Bank Credit Agreement is no
longer in effect, the Company shall promptly give to the Trustee written
notice thereof, which notice shall be countersigned by the Agent.  Unless and
until the Trustee shall have received such written notice with respect to the
New Bank Credit Agreement, the Trustee, subject to the TIA Sections 315(a)
through 315(d), shall be entitled in all respects to assume that the New Bank
Credit Agreement is in effect (unless a Responsible Officer of the Trustee
shall have actual knowledge to the contrary).

            SECTION 503.   Collection of Indebtedness and Suits for
Enforcement by Trustee.

            The Company and each Guarantor covenant that if

            (a)   default is made in the payment of any installment of
      interest on any Security when such interest becomes due and payable and
      such default continues for a period of 30 days, or

            (b)   default is made in the payment of the principal of (or
      premium, if any, on) any Security at the Maturity thereof,

the Company and such Guarantor will, upon demand of the Trustee, pay to the
Trustee for the benefit of the Holders of such Securities, the whole amount
then due and payable on such Securities for principal (and premium, if any)
and interest, and interest on any overdue principal (and premium, if any) and,
to the extent that payment of such interest shall be legally enforceable, upon
any overdue installment of interest, at the rate borne by the Securities, and,
in addition thereto, such further amount as shall be sufficient to cover the
costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

            If the Company or any Guarantor fails to pay such amounts
forthwith upon such demand, the Trustee, in its own name as trustee of an
express trust, may institute a judicial proceeding for the collection of the
sums so due and unpaid, may prosecute such proceeding to judgment or final
decree and may enforce the same against the Company or such Guarantor and
collect the moneys adjudged or decreed to be payable in the manner provided by
law out of the property of the Company or such Guarantor, wherever situated.

            If an Event of Default occurs and is continuing, the Trustee may
in its discretion proceed to protect and enforce its rights and the rights of
the Holders by such appropriate private or judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, whether for
the specific enforcement of any covenant or agreement in this Indenture or in
aid of the exercise of any power granted herein, including, without
limitation, seeking recourse against any Guarantor pursuant to the terms of its
Guarantee, or to enforce any other proper remedy.

            SECTION 504.   Trustee May File Proofs of Claim.

            In case of the pendency of any receivership, insolvency,
liquidation, bankruptcy, reorganization, arrangement, adjustment, composition
or other judicial proceeding relative to the Company or any Guarantor or the
property of the Company or any Guarantor or their creditors, the Trustee
(irrespective of whether the principal of the Securities shall then be due and
payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand on the Company or any Guarantor
for the payment of overdue principal, premium, if any, or interest) shall be
entitled and empowered, by intervention in such proceeding or otherwise,

            (i)   to file and prove a claim for the whole amount of principal
      (and premium, if any) and interest owing and unpaid in respect of the
      Securities and to file such other papers or documents as may be
      necessary or advisable in order to have the claims of the Trustee
      (including any claim for the reasonable compensation, expenses,
      disbursements and advances of the Trustee, its agents and counsel) and
      of the Holders allowed in such judicial proceeding, and

            (ii)  to collect and receive any moneys or other property payable
      or deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay
the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any
other amounts due the Trustee under Section 606.

            Nothing herein contained shall be deemed to authorize the Trustee
to authorize or consent to or accept or adopt on behalf of any Holder any plan
of reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof, or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

            SECTION 505.   Trustee May Enforce Claims Without Possession of
Securities.

            All rights of action and claims under this Indenture, the
Securities and the Guarantees may be prosecuted and enforced by the Trustee
without the possession of any of the Securities or the production thereof in
any proceeding relating thereto, and any such proceeding instituted by the
Trustee shall be brought in its own name and as trustee of an express trust,
and any recovery of judgment shall, after provision for the payment of the
reasonable compensation, expenses, disbursements and advances of the Trustee,
its agents and counsel, be for the ratable benefit of the Holders of the
Securities in respect of which such judgment has been recovered.

            SECTION 506.   Application of Money Collected.

            Any money collected by the Trustee pursuant to this Article shall
be applied in the following order, at the date or dates fixed by the Trustee
and, in case of the distribution of such money on account of principal (or
premium, if any) or interest, upon presentation of the Securities and the
notation thereon of the payment if only partially paid and upon surrender
thereof if fully paid:

            FIRST:  To the payment of all amounts due the Trustee under
      Section 606;

            SECOND:  To the payment of the amounts then due and unpaid for
      principal of (and premium, if any, on,) and interest on the Securities
      in respect of which or for the benefit of which such money has been
      collected, ratably, without preference or priority of any kind,
      according to the amounts due and payable on such Securities for principal
      (and premium, if any) and interest, respectively; and

            THIRD:  The balance, if any, to the Person or Persons entitled
      thereto.

            SECTION 507.   Limitation on Suits.

            No Holder of any Securities shall have any right to institute any
proceeding, judicial or otherwise, with respect to this Indenture, or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless

            (1)   such Holder has previously given written notice to the
      Trustee of a continuing Event of Default;

            (2)   the Holders of not less than 25% in principal amount of the
      Outstanding Securities shall have made written request to the Trustee to
      institute proceedings in respect of such Event of Default in its own
      name as Trustee hereunder;

            (3)   such Holder or Holders have offered to the Trustee
      reasonable indemnity against the costs, expenses and liabilities to be
      incurred in compliance with such request;

            (4)   the Trustee for 60 days after its receipt of such notice,
      request and offer of indemnity has failed to institute any such
      proceeding; and

            (5)   no direction inconsistent with such written request has been
      given to the Trustee during such 60-day period by the Holders of a
      majority or more in principal amount of the Outstanding Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other
Holders, or to obtain or to seek to obtain priority or preference over any
other Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all the
Holders.

            SECTION 508.   Unconditional Right of Holders to Receive Principal,
Premium and Interest.

            Notwithstanding any other provision in this Indenture, the Holder
of any Security shall have the right, which is absolute and unconditional, to
receive payment, as provided herein (including, if applicable, Article Eleven)
and in such Security of the principal of (and premium, if any, on) and
(subject to Section 307) interest on, such Security on the respective Stated
Maturities expressed in such Security and to institute suit for the enforcement
of any such payment, and such rights shall not be impaired without the consent
of such Holder.

            SECTION 509.   Restoration of Rights and Remedies.

            If the Trustee or any Holder has instituted any proceeding to
enforce any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantors, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

            SECTION 510.   Rights and Remedies Cumulative.

            Except as otherwise provided with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other
right or remedy, and every right and remedy shall, to the extent permitted by
law, be cumulative and in addition to every other right and remedy given
hereunder or now or hereafter existing at law or in equity or otherwise.  The
assertion or employment of any right or remedy hereunder, or otherwise, shall
not prevent the concurrent assertion or employment of any other appropriate
right or remedy.

            SECTION 511.   Delay or Omission Not Waiver.

            No delay or omission of the Trustee or of any Holder of any
Security to exercise any right or remedy accruing upon any Event of Default
shall impair any such right or remedy or constitute a waiver of any such Event
of Default or an acquiescence therein.  Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time
to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

            SECTION 512.   Control by Holders.

            The Holders of not less than a majority in principal amount of the
Outstanding Securities shall have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee, provided that

            (1)   such direction shall not be in conflict with any rule of law
      or with this Indenture,

            (2)   the Trustee may take any other action deemed proper by the
      Trustee which is not inconsistent with such direction, and

            (3)   the Trustee need not take any action which might involve it
      in personal liability or be unjustly prejudicial to the Holders not
      consenting.

            SECTION 513.   Waiver of Past Defaults.

            The Holders of not less than a majority in principal amount of the
Outstanding Securities may on behalf of the Holders of all the Securities
waive any past default hereunder and its consequences, except a default

            (1)   in respect of the payment of the principal of (or premium,
      if any, on) or interest on any Security, or

            (2)   in respect of a covenant or provision hereof which under
      Article Nine cannot be modified or amended without the consent of the
      Holder of each Outstanding Security affected.

            Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

            SECTION 514.   Waiver of Stay or Extension Laws.

            The Company and each Guarantor covenant (to the extent that they
may lawfully do so) that they will not at any time insist upon, or plead, or
in any manner whatsoever claim or take the benefit or advantage of, any stay
or extension law wherever enacted, now or at any time hereafter in force,
which may affect the covenants or the performance of this Indenture; and the
Company and each Guarantor (to the extent that they may lawfully do so) hereby
expressly waive all benefit or advantage of any such law and covenant that
they will not hinder, delay or impede the execution of any power herein granted
to the Trustee, but will suffer and permit the execution of every such power
as though no such law had been enacted.

                                  ARTICLE SIX

                                  THE TRUSTEE

            SECTION 601.   Notice of Defaults.

            Within 90 days after the occurrence of any Default hereunder, the
Trustee shall transmit in the manner and to the extent provided in TIA Section
313(c), notice of such Default hereunder known to the Trustee, unless such
Default shall have been cured or waived; provided, however, that, except in
the case of a Default in the payment of the principal of (or premium, if any,
on) or interest on any Security or in the payment of any sinking fund
installment, the Trustee shall be protected in withholding such notice if and
so long as the board of directors, the executive committee or a trust
committee of directors and/or Responsible Officers of the Trustee in good
faith determines that the withholding of such notice is in the interest of the
Holders; and provided further that in the case of any Default of the character
specified in clause (i) of Section 501(3) no such notice to Holders shall be
given until at least 60 days after the occurrence thereof.

            SECTION 602.   Certain Rights of Trustee.

            Subject to the provisions of TIA Sections 315(a) through 315(d):

            (1)   the Trustee may rely and shall be protected in acting or
      refraining from acting upon any resolution, certificate, statement,
      instrument, opinion, report, notice, request, direction, consent, order,
      bond, debenture, note, other evidence of indebtedness or other paper or
      document believed by it to be genuine and to have been signed or
      presented by the proper party or parties;

            (2)   any request or direction of the Company mentioned herein
      shall be sufficiently evidenced by a Company Request or Company Order
      and any resolution of the board of directors of the Company may be
      sufficiently evidenced by a Board Resolution;

            (3)   whenever in the administration of this Indenture the Trustee
      shall deem it desirable that a matter be proved or established prior to
      taking, suffering or omitting any action hereunder, the Trustee (unless
      other evidence be herein specifically prescribed) may, in the absence of
      bad faith on its part, rely upon an Officers' Certificate;

            (4)   the Trustee may consult with counsel and the written advice
      of such counsel or any Opinion of Counsel shall be full and complete
      authorization and protection in respect of any action taken, suffered or
      omitted by it hereunder in good faith and in reliance thereon;

            (5)   the Trustee shall be under no obligation to exercise any of
      the rights or powers vested in it by or pursuant to this Indenture at
      the request or direction of any of the Holders pursuant to this
      Indenture, unless such Holders shall have offered to the Trustee
      security or indemnity reasonably satisfactory to the Trustee against the
      costs, expenses and liabilities which might be incurred by it in
      compliance with such request or direction;

            (6)   the Trustee shall not be bound to make any investigation
      into the facts or matters stated in any resolution, certificate,
      statement, instrument, opinion, report, notice, request, direction,
      consent, order, bond, debenture, note, other evidence of indebtedness or
      other paper or document, but the Trustee, in its discretion, may make
      such further inquiry or investigation into such facts or matters as it
      may see fit, and, if the Trustee shall determine to make such further
      inquiry or investigation, it shall be entitled to examine the books,
      records and premises of the Company or any Guarantor, personally or by
      agent or attorney at the cost of the Company or such Guarantor and shall
      not incur by reason of such inquiry or investigation any obligation or
      responsibility of any kind other than those imposed by or pursuant to
      this Indenture;

            (7)   the Trustee may execute any of the trusts or powers
      hereunder or perform any duties hereunder either directly or by or
      through agents or attorneys and the Trustee shall not be responsible for
      any misconduct or negligence on the part of any agent or attorney
      appointed with due care by it hereunder;

            (8)   the Trustee shall not be liable for any action taken,
      suffered or omitted by it in good faith and believed by it to be
      authorized or within the discretion or rights or powers conferred upon
      it by this Indenture; and

            (9)   the Trustee shall not be deemed to have knowledge of the
      occurrence of a Change in Control or of the fact that the amount of
      Excess Proceeds equals or exceeds $20,000,000 until the Trustee receives
      written notice thereof as required by this Indenture.

            The Trustee shall not be required to expend or risk its own funds
or otherwise incur any financial liability in the performance of any of its
duties hereunder, or in the exercise of any of its rights or powers if it
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it.

            SECTION 603.   Trustee Not Responsible for Recitals or Issuance of
Securities.

            The recitals contained herein, in the Securities and in the
Guarantees, except for the Trustee's certificates of authentication, shall be
taken as the statements of the Company and each Guarantor, and the Trustee
assumes no responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this Indenture, the
Securities or the Guarantees, except that the Trustee represents that it is
duly authorized to execute and deliver this Indenture, authenticate the
Securities and perform its obligations hereunder and that the statements made
by it in a Statement of Eligibility and Qualification on Form T-1 supplied to
the Company are true and accurate, subject to the qualifications set forth
therein.  The Trustee shall not be accountable for the use or application by
the Company of Securities or the proceeds thereof.

            SECTION 604.   May Hold Securities.

            The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company or of the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to TIA
Sections 310(b) and 311, may otherwise deal with the Company with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar
or such other agent.

            SECTION 605.   Money Held in Trust.

            Money held by the Trustee in trust hereunder need not be
segregated from other funds except to the extent required by law.  The Trustee
shall be under no liability for interest on any money received by it hereunder
except as otherwise agreed with the Company.

            SECTION 606.   Compensation and Reimbursement.

            The Company and each Guarantor agree:

            (1)   to pay to the Trustee from time to time reasonable
      compensation for all services rendered by it hereunder (which
      compensation shall not be limited by any provision of law in regard to
      the compensation of a trustee of an express trust);

            (2)   except as otherwise expressly provided herein, to reimburse
      the Trustee upon its request for all reasonable expenses (including,
      without limitation, expenses incurred in connection with notices or
      other communications to the Holders as required hereunder),
      disbursements and advances incurred or made by the Trustee in accordance
      with any provision of this Indenture (including the reasonable
      compensation and the expenses and disbursements of its agents and
      counsel), except any such expense, disbursement or advance as may be
      attributable to its negligence or bad faith; and

            (3)   to indemnify the Trustee, and its officers, directors,
      employees and agents, for, and to hold them harmless against, any loss,
      liability or expense incurred without negligence or bad faith on their
      part, arising out of or in connection with the acceptance or
      administration of this trust, including the costs and expenses of
      defending themselves against any claim or liability in connection with
      the exercise or performance of any of their powers or duties hereunder.

            The obligations of the Company and the Guarantors under this
Section to compensate the Trustee, to pay or reimburse the Trustee for
expenses, disbursements and advances and to indemnify and hold harmless the
Trustee shall constitute additional indebtedness hereunder and shall survive
the satisfaction and discharge of this Indenture.  As security for the
performance of such obligations of the Company and the Guarantors, the Trustee
shall have a claim prior to the Securities upon all property and funds held or
collected by the Trustee as such, except funds held in trust for the payment
of principal of (and premium, if any, on) or interest on particular Securities.

            SECTION 607.   Corporate Trustee Required; Eligibility.

            There shall at all times be a Trustee hereunder which shall be
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a
combined capital and surplus of at least $50,000,000.  If such corporation
publishes reports of condition at least annually, pursuant to law or to the
requirements of federal, state, territorial or District of Columbia
supervising or examining authority, then for the purposes of this Section, the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of
condition so published.  If at any time the Trustee shall cease to be eligible
in accordance with the provisions of this Section, it shall resign immediately
in the manner and with the effect hereinafter specified in this Article.

            SECTION 608.   Resignation and Removal; Appointment of Successor.

            (a)   No resignation or removal of the Trustee and no appointment
of a successor Trustee pursuant to this Article shall become effective until
the acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 609.

            (b)   The Trustee may resign at any time by giving written notice
thereof to the Company.  If the instrument of acceptance by a successor
Trustee required by Section 609 shall not have been delivered to the Trustee
within 30 days after the giving of such notice of resignation, the resigning
Trustee may petition any court of competent jurisdiction for the appointment
of a successor Trustee.

            (c)   The Trustee may be removed at any time by Act of the Holders
of not less than a majority in principal amount of the Outstanding Securities,
delivered to the Trustee and to the Company.

            (d)   If at any time:

            (1)   the Trustee shall fail to comply with the provisions of TIA
      Section 310(b) after written request therefor by the Company or by any
      Holder who has been a bona fide Holder of a Security for at least six
      months, or

            (2)   the Trustee shall cease to be eligible under Section 607 and
      shall fail to resign after written request therefor by the Company or by
      any Holder who has been a bona fide Holder of a Security for at least
      six months, or

            (3)   the Trustee shall become incapable of acting or shall be
      adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
      property shall be appointed or any public officer shall take charge or
      control of the Trustee or of its property or affairs for the purpose of
      rehabilitation, conservation or liquidation,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee, or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself
and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

            (e)   If the Trustee shall resign, be removed or become incapable
of acting, or if a vacancy shall occur in the office of Trustee for any cause,
the Company, by a Board Resolution, shall promptly appoint a successor
Trustee.  If, within one year after such resignation, removal or incapability,
or the occurrence of such vacancy, a successor Trustee shall be appointed by
Act of the Holders of a majority in principal amount of the Outstanding
Securities delivered to the Company and the retiring Trustee, the successor
Trustee so appointed shall, forthwith upon its acceptance of such appointment,
become the successor Trustee and supersede the successor Trustee appointed by
the Company.  If no successor Trustee shall have been so appointed by the
Company or the Holders and accepted appointment in the manner hereinafter
provided, any Holder who has been a bona fide Holder of a Security for at
least six months may, on behalf of himself and all others similarly situated,
petition any court of competent jurisdiction for the appointment of a successor
Trustee.

            (f)   The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to the
Holders of Securities in the manner provided for in Section 106.  Each notice
shall include the name of the successor Trustee and the address of its
Corporate Trust Office.

            SECTION 609.   Acceptance of Appointment by Successor.

            Every successor Trustee appointed hereunder shall execute,
acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or
removal of the retiring Trustee shall become effective and such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee; but, on
request of the Company or the successor Trustee, such retiring Trustee shall,
upon payment of its charges, execute and deliver an instrument transferring to
such successor Trustee all the rights, powers and trusts of the retiring
Trustee and shall duly assign, transfer and deliver to such successor Trustee
all property and money held by such retiring Trustee hereunder.  Upon request
of any such successor Trustee, the Company and each Guarantor shall execute
any and all instruments for more fully and certainly vesting in and confirming
to such successor Trustee all such rights, powers and trusts.

            No successor Trustee shall accept its appointment unless at the
time of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

            SECTION 610.   Merger, Conversion, Consolidation or Succession to
Business.

            Any corporation into which the Trustee may be merged or converted
or with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on
the part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may
adopt such authentication and deliver the Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such
Securities; and in case at that time any of the Securities shall not have been
authenticated, any successor Trustee may authenticate such Securities either
in the name of any predecessor hereunder or in the name of the successor
Trustee; and in all such cases such certificates shall have the full force
which it is anywhere in the Securities or in this Indenture provided that the
certificate of the Trustee shall have; provided, however, that the right to
adopt the certificate of authentication of any predecessor Trustee or to
authenticate Securities in the name of any predecessor Trustee shall apply
only to its successor or successors by merger, conversion or consolidation.

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

            SECTION 701.   Disclosure of Names and Addresses of Holders.

            Every Holder of Securities, by receiving and holding the same,
agrees with the Company, the Guarantors and the Trustee that none of the
Company, the Guarantors or the Trustee or any agent of any of them shall be
held accountable by reason of the disclosure of any such information as to the
names and addresses of the Holders in accordance with TIA Section 312,
regardless of the source from which such information was derived, and that the
Trustee shall not be held accountable by reason of mailing any material
pursuant to a request made under TIA Section 312(b).

            SECTION 702.   Reports by Trustee.

            Within 60 days after May 15 of each year commencing with the first
May 15 after the first issuance of Securities, the Trustee shall transmit to
the Holders, in the manner and to the extent provided in TIA Section 313(c), a
brief report dated as of such May 15 if required by TIA Section 313(a).

            SECTION 703.   Reports by Company and the Guarantors.

            The Company and each Guarantor shall:

            (1)   file with the Trustee, within 15 days after the Company or
      such Guarantor, as the case may be, is required to file the same with
      the Commission, copies of the annual reports and of the information,
      documents and other reports (or copies of such portions of any of the
      foregoing as the Commission may from time to time by rules and
      regulations prescribe) which the Company or such Guarantor may be
      required to file with the Commission pursuant to Section 13 or Section
      15(d) of the Exchange Act; or, if the Company or such Guarantor, as the
      case may be, is not required to file information, documents or reports
      pursuant to either of said Sections, then it shall file with the Trustee
      and the Commission, in accordance with rules and regulations prescribed
      from time to time by the Commission, such of the supplementary and
      periodic information, documents and reports which may be required
      pursuant to Section 13 of the Exchange Act in respect of a security
      listed and registered on a national securities exchange as may be
      prescribed from time to time in such rules and regulations;

            (2)   file with the Trustee and the Commission, in accordance with
      rules and regulations prescribed from time to time by the Commission,
      such additional information, documents and reports with respect to
      compliance by the Company or such Guarantor with the conditions and
      covenants of this Indenture as may be required from time to time by such
      rules and regulations; and

            (3)   transmit by mail to all Holders, in the manner and to the
      extent provided in TIA Section 313(c), within 30 days after the filing
      thereof with the Trustee, such summaries of any information, documents
      and reports required to be filed by the Company or such Guarantor
      pursuant to paragraphs (1) and (2) of this Section as may be required by
      rules and regulations prescribed from time to time by the Commission.

                                 ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

            SECTION 801.   ADT Limited or Any Restricted Subsidiary May
Consolidate, etc. Only on Certain Terms.

            ADT Limited shall not consolidate or amalgamate with or merge with
or into any other Person or, directly or indirectly, sell, convey, assign,
transfer, lease or otherwise dispose of all or substantially all of its
properties and assets to any Person or group of affiliated Persons, or permit
any of the Restricted Subsidiaries to enter into any such transaction or
transactions if such transaction or transactions, in the aggregate, would
result in the sale, conveyance, assignment, transfer, lease or other
disposition of all or substantially all of the properties and assets of the
Company, ADT Limited and the other Restricted Subsidiaries on a consolidated
basis, to any Person or group of affiliated Persons, unless (and, in the case
of certain mergers, consolidations or amalgamations of ADT Limited with or into
any other Person, subject to Section 802 hereof):

            (1)   either (A) the Company, ADT Limited or such other Restricted
      Subsidiary shall be the continuing corporation or (B) such Person (if
      other than the Company, ADT Limited or such other Restricted Subsidiary)
      formed by such consolidation or amalgamation or into which the Company,
      ADT Limited or such other Restricted Subsidiary is amalgamated or merged
      or the Person which acquires by sale, conveyance, assignment, transfer,
      lease or other disposition all or substantially all of the properties
      and assets of the Company, ADT Limited and the other Restricted
      Subsidiaries (the "Surviving Entity") shall be a corporation duly
      organized and validly existing under the laws of the United States of
      America, any state thereof or the District of Columbia except that in
      the case of ADT Limited or any Restricted Subsidiary (other than the
      Company or any Restricted Subsidiary of the Company), the Surviving
      Entity may be a corporation duly organized and validly existing under the
      laws of Bermuda, Canada, the United Kingdom or any political subdivision
      thereof and shall, in either case, expressly assume, by supplemental
      indenture to this Indenture, executed and delivered by the Trustee, in
      form satisfactory to the Trustee, all the obligations of the Company,
      ADT Limited or such other Restricted Subsidiary under the Securities and
      this Indenture and this Indenture shall remain in full force and effect;

            (2)   immediately before and immediately after giving effect to
      such transaction no Default or Event of Default shall have occurred and
      be continuing (and treating any Indebtedness that becomes an obligation
      of the Company, ADT Limited or any other Restricted Subsidiary in
      connection with or as a result of such transaction as having been
      incurred at the time of such transaction);

            (3)   immediately after giving effect to such transaction, the
      Consolidated Net Worth of ADT Limited, if the Company, ADT Limited or
      any other Restricted Subsidiary is the continuing corporation, or the
      Surviving Entity is at least equal to the Consolidated Net Worth of ADT
      Limited immediately before such transaction;

            (4)   each Guarantor, unless it is the other party to the
      transactions described above, shall have by supplemental indenture
      confirmed that its Guarantee shall apply to such Person's obligations
      under the Securities; and

            (5)   the Company and ADT Limited shall have delivered, or caused
      to be delivered, to the Trustee an Officers' Certificate and an Opinion
      of Counsel, each stating that this Section 801 has been complied with
      and that all conditions precedent herein provided for relating to such
      transaction have been satisfied.

Notwithstanding anything contained in this Section 801, the Company and any
Surviving Entity of the Company shall at all times be a corporation duly
organized and validly existing under the laws of the United States of America,
any state thereof or the District of Columbia.

            SECTION 802.   ADT Limited May Amalgamate, Redomesticate, etc.,
Only on Certain Terms.

            ADT Limited may (a) amalgamate with or merge with or into a
newly-formed corporation having no assets or liabilities, which amalgamation
or merger shall be solely for the purpose of reincorporating ADT Limited under
the laws of Canada, the United Kingdom or other political subdivision thereof
or the United States of America, any state thereof or the District of Columbia
or (b) continue, redomesticate or otherwise become subject to the laws of a
jurisdiction other than Bermuda, to the same extent as if it had been
incorporated in such jurisdiction, provided that in the case of clauses (a)
and (b) above:

            (1)   the Surviving Entity shall be a corporation duly organized
      and validly existing under the laws of Canada, the United Kingdom or
      political subdivision thereof or the United States of America, any state
      thereof or the District of Columbia and shall, in either case, expressly
      assume, by supplemental indenture to this Indenture, executed and
      delivered by the Trustee, in form satisfactory to the Trustee, all the
      obligations of ADT Limited under the Securities and this Indenture and
      this Indenture shall remain in full force and effect;

            (2)   immediately before and immediately after giving effect to
      such transaction, no Default or Event of Default shall have occurred and
      be continuing (and treating any Indebtedness that becomes an obligation
      of the Company, ADT Limited or any other Restricted Subsidiary in
      connection with or as a result of such transaction as having been
      incurred at the time of such transaction);

            (3)   immediately after giving effect to such transaction, the
      Consolidated Net Worth of the Surviving Entity is at least equal to the
      Consolidated Net Worth of ADT Limited immediately before such
      transaction less customary and reasonable transaction costs;

            (4)   each Guarantor, unless it is the other party to the
      transactions described above, shall have by supplemental indenture
      confirmed that its Guarantee shall apply to such Person's obligations
      under the Securities; and

            (5)   the Surviving Entity shall have delivered, or caused to be
      delivered, to the Trustee an Officers' Certificate and an Opinion of
      Counsel, each stating that this Section 802 has been complied with and
      that all conditions precedent herein provided for relating to such
      transaction have been satisfied.

            SECTION 803.   Successor Substituted.

            Upon any consolidation or amalgamation of ADT Limited or
consolidation of the Company or any Guarantor with or merger of the Company or
any Guarantor with or into any other corporation, or any continuance or
redomestication of ADT Limited in a jurisdiction other than Bermuda, or upon
any conveyance, transfer or lease of all or substantially all of the
properties and assets of the Company, ADT Limited and the other Restricted
Subsidiaries to any Person in accordance with Section 801 or 802, the
successor Person formed by such consolidation, amalgamation, continuance or
redomestication or into which the Company or such Guarantor is merged or to
which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company or
such Guarantor under this Indenture, the Securities and the Guarantees, as the
case may be, with the same effect as if such successor Person had been named
as the Company or such Guarantor, as the case may be, herein, in the
Securities or in the Guarantees, as the case may be, and in the event of any
such conveyance or transfer, the Company or such Guarantor (which terms shall
for this purpose mean the Person named as the "Company" in the first paragraph
of this Indenture, any Guarantor on the date hereof or any successor Person
which shall theretofore become such in the manner described in Section 801 or
802), except in the case of a lease, shall be discharged of all obligations
and covenants under this Indenture, the Securities and the Guarantees, as the
case may be, and may be dissolved and liquidated.

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

            SECTION 901.   Supplemental Indentures Without Consent of Holders.

            Without the consent of any Holders, the Company and the
Guarantors, when each is authorized by a Board Resolution adopted by their
respective boards of directors or any duly authorized committee thereof, and
the Trustee, at any time and from time to time, may enter into one or more
indentures supplemental hereto, or agreements or other instruments with
respect to the Guarantees, in form satisfactory to the Trustee, for any of the
following purposes:

            (1)   to evidence the succession of another Person to the Company
      or any Guarantor and the assumption by any such successor of the
      covenants of the Company or any Guarantor contained herein, in the
      Securities or in the Guarantees; or

            (2)   to add to the covenants of the Company or any Guarantor for
      the benefit of the Holders or to surrender any right or power herein
      conferred upon the Company or any Guarantor; or

            (3)   to add any additional Events of Default; or

            (4)   to evidence and provide for the acceptance of appointment
      hereunder by a successor Trustee pursuant to the requirements of Section
      609; or

            (5)  to cure any ambiguity, to correct or supplement any provision
      herein which may be inconsistent with any other provision herein, or to
      make any other provisions with respect to matters or questions arising
      under this Indenture; provided that such action shall not adversely
      affect the interests of the Holders in any material respect; or

            (6)   to add a guarantor of the Guaranteed Obligations; or

            (7)   to secure the Securities pursuant to any relevant provision
      under the Indenture.

            SECTION 902.   Supplemental Indentures with Consent of Holders.

            With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Securities, by Act of said Holders
delivered to the Company and the Trustee, the Company and the Guarantors, when
each is authorized by a Board Resolution, and the Trustee may enter into an
indenture or indentures supplemental hereto for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions of
this Indenture or of modifying in any manner the rights of the Holders under
this Indenture; provided, however, that no such supplemental indenture shall,
without the consent of the Holder of each Outstanding Security affected
thereby:

            (1)   change the Stated Maturity of the principal of, or any
      installment of interest on, any Security, or reduce the principal amount
      thereof or the rate of interest thereon, or change the coin or currency
      in which any Security or any premium or the interest thereon is payable,
      or impair the right to institute suit for the enforcement of any such
      payment after the Stated Maturity thereof, or

            (2)   reduce the percentage in principal amount of the Outstanding
      Securities, the consent of whose Holders is required for any such
      supplemental indenture, or the consent of whose Holders is required for
      any waiver of compliance with certain provisions of this Indenture or
      certain defaults hereunder and their consequences provided for in this
      Indenture, or

            (3)   modify any of the provisions of this Section or Sections 513
      and 1021, except to increase any such percentage or to provide that
      certain other provisions of this Indenture cannot be modified or waived
      without the consent of the Holder of each Outstanding Security affected
      thereby, or

            (4)   modify any of the provisions of this Indenture relating to a
      Change in Control in a manner adverse to the Holders of the Outstanding
      Securities.

            It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

            SECTION 903.   Execution of Supplemental Indentures.

            In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby
of the trusts created by this Indenture, the Trustee shall be entitled to
receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture.  The Trustee may, but shall not be obligated to,
enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

            SECTION 904.   Effect of Supplemental Indentures.

            Upon the execution of any supplemental indenture under this
Article, this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Securities theretofore or thereafter authenticated and
delivered hereunder shall be bound thereby.

            SECTION 905.   Conformity with Trust Indenture Act.

            Every supplemental indenture executed pursuant to the Article
shall conform to the requirements of the Trust Indenture Act as then in effect.

            SECTION 906.   Reference in Securities to Supplemental Indentures.

            Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company shall so
determine, new Securities so modified as to conform, in the opinion of the
Trustee and the Company, to any such supplemental indenture may be prepared and
executed by the Company and authenticated and delivered by the Trustee in
exchange for Outstanding Securities.

            SECTION 907.   Notice of Supplemental Indentures.

            Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Security
affected, in the manner provided for in Section 106, setting forth in general
terms the substance of such supplemental indenture.

                                  ARTICLE TEN

                                   COVENANTS

            SECTION 1001.  Payment of Principal, Premium, if any, and Interest.

            The Company covenants and agrees for the benefit of the Holders
that it will duly and punctually pay the principal of (and premium, if any,
on) and interest on the Securities in accordance with the terms of the
Securities and this Indenture.

            SECTION 1002.  Maintenance of Office or Agency.

            The Company will maintain in The City of New York, an office or
agency where Securities may be presented or surrendered for payment, where
Securities may be surrendered for registration of transfer or exchange and
where notices and demands to or upon the Company in respect of the Securities
and this Indenture may be served.  The Corporate Trust Office of the Trustee
shall be such office or agency of the Company, unless the Company shall
designate and maintain some other office or agency for one or more of such
purposes.  The Company will give prompt written notice to the Trustee of any
change in the location of any such office or agency.  If at any time the
Company shall fail to maintain any such required office or agency or shall
fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the Corporate Trust
Office of the Trustee, and the Company hereby appoints the Trustee as its
agent to receive all such presentations, surrenders, notices and demands.

            The Company may also from time to time designate one or more other
offices or agencies (in or outside of The City of New York) where the
Securities may be presented or surrendered for any or all such purposes and
may from time to time rescind any such designation; provided, however, that no
such designation or rescission shall in any manner relieve the Company of its
obligation to maintain an office or agency in The City of New York for such
purposes.  The Company will give prompt written notice to the Trustee of any
such designation or rescission and any change in the location of any such
other office or agency.

            SECTION 1003.  Money for Security Payments to Be Held in Trust.

            If the Company shall at any time act as its own Paying Agent, it
will, on or before each due date of the principal of (and premium, if any, on)
or interest on any of the Securities, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay the principal
(and premium, if any) or interest so becoming due until such sums shall be
paid to such Persons or otherwise disposed of as herein provided and will
promptly notify the Trustee of its action or failure so to act.

            Whenever the Company shall have one or more Paying Agents for the
Securities, it will, on or before each due date of the principal of (and
premium, if any, on), or interest on, any Securities, deposit with a Paying
Agent a sum sufficient to pay the principal (and premium, if any) or interest
so becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such Paying Agent
is the Trustee) the Company will promptly notify the Trustee of such action or
any failure so to act.

            The Company will cause each Paying Agent (other than the Trustee)
to execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee, subject to the provisions of this Section, that
such Paying Agent will:

            (1)   hold all sums held by it for the payment of the principal of
      (and premium, if any, on) or interest on Securities in trust for the
      benefit of the Persons entitled thereto until such sums shall be paid to
      such Persons or otherwise disposed of as herein provided;

            (2)   give the Trustee notice of any default by the Company or any
      Guarantor in the making of any payment of principal (and premium, if
      any) or interest; and

            (3)   at any time during the continuance of any such default, upon
      the written request of the Trustee, forthwith pay to the Trustee all
      sums so held in trust by such Paying Agent.

            The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held
in trust by the Company or such Paying Agent, such sums to be held by the
Trustee upon the same trusts as those upon which such sums were held by the
Company or such Paying Agent; and, upon such payment by any Paying Agent to
the Trustee, such Paying Agent shall be released from all further liability
with respect to such sums.

            Any money deposited with the Trustee or any Paying Agent, or then
held by the Company, in trust for the payment of the principal of (and
premium, if any, on) or interest on any Security and remaining unclaimed for
two years after such principal (and premium, if any) or interest has become
due and payable shall be paid to the Company on Company Request, or (if then
held by the Company) shall be discharged from such trust; and the Holder of
such Security shall thereafter, as an unsecured general creditor, look only to
the Company for payment thereof, and all liability of the Trustee or such
Paying Agent with respect to such trust money, and all liability of the
Company as trustee thereof, shall thereupon cease; provided, however, that the
Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in a
newspaper published in the English language, customarily published on each
Business Day and of general circulation in the Borough of Manhattan, The City
of New York, notice that such money remains unclaimed and that, after a date
specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid
to the Company.

            SECTION 1004.  Corporate Existence.

            Subject to Article Eight, the Company and ADT Limited will do or
cause to be done all things necessary to preserve and keep in full force and
effect the corporate existence, rights (charter and statutory) and franchises
of the Company, ADT Limited and each other Restricted Subsidiary; provided,
however, that the Company and ADT Limited shall not be required to preserve
any such right or franchise if the Board of Directors shall determine that the
preservation thereof is no longer desirable in the conduct of the business of
the Company, ADT Limited and the other Restricted Subsidiaries as a whole and
that the loss thereof is not disadvantageous in any material respect to the
Holders.

            SECTION 1005.  Payment of Taxes and Other Claims.

            The Company and ADT Limited will pay or discharge or cause to be
paid or discharged, before the same shall become delinquent, (a) all taxes,
assessments and governmental charges levied or imposed upon the Company, ADT
Limited or any other Subsidiary or upon the income, profits or property of the
Company, ADT Limited or any other Subsidiary and (b) all lawful claims for
labor, materials and supplies, which, if unpaid, might by law become a lien
upon the property of the Company, ADT Limited or any other Restricted
Subsidiary; provided, however, that the Company and ADT Limited shall not be
required to pay or discharge or cause to be paid or discharged any such tax,
assessment, charge or claim whose amount, applicability or validity is being
contested in good faith by appropriate proceedings.

            SECTION 1006.  Maintenance of Properties.

            The Company and ADT Limited will cause all properties owned by the
Company, ADT Limited or any other Restricted Subsidiary or used or held for
use in the conduct of the business of the Company, ADT Limited or any other
Restricted Subsidiary to be maintained and kept in good condition, repair and
working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and
improvements thereof, all as in the judgment of the Company and ADT Limited
may be necessary so that the business carried on in connection therewith may be
properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company and ADT Limited from
discontinuing the maintenance of any of such properties if such discontinuance
is, in the judgment of the Company and ADT Limited, desirable in the conduct
of the business of the Company, ADT Limited or any other Restricted Subsidiary
and not disadvantageous in any material respect to the Holders.

            SECTION 1007.  Insurance.

            The Company and ADT Limited will at all times keep all of the
properties of the Company, ADT Limited and the other Restricted Subsidiaries
which are of an insurable nature insured with insurers, believed by the
Company and ADT Limited to be responsible, against loss or damage to the
extent that property of similar character is usually so insured by
corporations similarly situated and owning like properties.

            SECTION 1008.  Statement by Officers As to Default.

            (a)   Each of ADT Limited and the Company will deliver to the
Trustee, within 120 days after the end of each fiscal year, a brief
certificate from its principal executive officer, principal financial officer
or principal accounting officer as to his or her knowledge of compliance by
the Company, ADT Limited and the other Subsidiaries with all conditions and
covenants applicable to the Company, ADT Limited and the other Subsidiaries
under this Indenture.  For purposes of this Section 1008(a), such compliance
shall be determined without regard to any period of grace or requirement of
notice under this Indenture.

            (b)   When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the holder of any other evidence of
Indebtedness of the Company, ADT Limited or any other Restricted Subsidiary
gives any notice or takes any other action with respect to a claimed default
(other than with respect to Indebtedness in the principal amount of less than
$15,000,000), the Company or ADT Limited shall deliver to the Trustee by
registered or certified mail or by telegram, telex or facsimile transmission
an Officers' Certificate specifying such event, notice or other action within
five Business Days of its occurrence.

            SECTION 1009.  Provision of Financial Statements.

            Whether or not ADT Limited is subject to Section 13(a) or 15(d) of
the Exchange Act, ADT Limited will, to the extent permitted under the Exchange
Act, file with the Commission the annual reports, quarterly reports and other
documents that ADT Limited would have been required to file with the
Commission pursuant to such Sections 13(a) or 15(d) if ADT Limited were so
subject, such documents to be filed with the Commission on or prior to the
respective dates (the "Required Filing Dates") by which ADT Limited would have
been required so to file such documents if ADT Limited were so subject.  The
Company will also in any event (x) within 15 days of each Required Filing Date
(i) transmit by mail to all Holders, as their names and addresses appear in
the Security Register, without cost to such Holders and (ii) file with the
Trustee copies of the annual reports, quarterly reports and other documents
that ADT Limited would have been required to file with the Commission pursuant
to Section 13(a) or 15(d) of the Exchange Act if ADT Limited were subject to
such Sections and (y) if filing such documents by ADT Limited with the
Commission is not permitted under the Exchange Act, promptly upon written
request, authorize the Trustee to provide a copy of such documents to a
prospective holder of the Securities at the Company's cost.

            SECTION 1010.  Purchase of Securities upon Change in Control.

            (a)   Upon the occurrence of a Change in Control, each Holder of
Securities shall have the right to require the Company to repurchase such
Holder's Securities in whole or in part in integral multiples of $1,000, at a
purchase price (the "Change in Control Purchase Price") in cash in an amount
equal to 101% of the principal amount of such Securities plus accrued and
unpaid interest, if any, to the date of purchase, in accordance with the
procedures set forth in this Section 1010 (a "Change in Control Offer").

            (b)   Within 30 days following any Change in Control, the Company
shall send by first-class mail, postage prepaid, to the Trustee and to each
Holder of the Securities, at his address appearing in the Security Register, a
notice stating:

            (1)   that a Change in Control has occurred and that such Holder
      has the right to require the Company to repurchase such Holder's
      Securities at the Change in Control Purchase Price;

            (2)   the circumstances and relevant facts regarding such Change
      in Control (including but not limited to information with respect to pro
      forma historical income, cash flow and capitalization after giving
      effect to such Change in Control);

            (3)   a purchase date (the "Purchase Date") which shall be no
      earlier than 45 days nor later than 60 days from the date such notice is
      mailed or such later date as may be necessary for the Company to comply
      with the requirements under the Exchange Act;

            (4)   that any Security not tendered will continue to accrue
      interest; and

            (5)   the instructions a Holder must follow in order to have its
      Securities repurchased in accordance with paragraph (d) of this Section.

            (c)   Holders electing to have Securities purchased will be
required to surrender such Securities to the Company at the address specified
in the notice at least five Business Days prior to the Purchase Date.  Holders
will be entitled to withdraw their election if the Company receives, not later
than five Business Days prior to the Purchase Date, a telegram, telex,
facsimile transmission or letter setting forth the name of the Holder, the
principal amount of the Securities delivered for purchase by the Holder as to
which his election is to be withdrawn and a statement that such Holder is
withdrawing his election to have such Securities purchased.  Holders whose
Securities are purchased only in part will be issued new Securities equal in
principal amount to the unpurchased portion of the Securities surrendered.

            (d)   The Company will comply with the applicable tender offer
rules, including Rule 14e-1 under the Exchange Act, and any other applicable
securities laws or regulations in connection with a Change in Control Offer.

            [SECTIONS 1011-1020 intentionally omitted.]

            SECTION 1021.  Waiver of Certain Covenants.

            The Company and each Guarantor may omit in any particular instance
to comply with any term, provision or condition set forth in Section 804,
Sections 1007 through 1009, inclusive, or Sections 1011 through 1020, if
before or after the time for such compliance the Holders of at least a
majority in principal amount of the Outstanding Securities, by Act of such
Holders, waive such compliance in such instance with such term, provision or
condition, but no such waiver shall extend to or affect such term, provision or
condition except to the extent so expressly waived, and, until such waiver
shall become effective, the obligations of the Company and each Guarantor and
the duties of the Trustee in respect of any such term, provision or condition
shall remain in full force and effect.

                                ARTICLE ELEVEN

                      DEFEASANCE AND COVENANT DEFEASANCE

            SECTION 1101.  Company's Option to Effect Defeasance or Covenant
Defeasance.

            The Company may, at its option by Board Resolution, at any time,
with respect to the Securities, elect to have either Section 1102 or Section
1103 be applied to all Outstanding Securities upon compliance with the
conditions set forth below in this Article Eleven.

            SECTION 1102.  Defeasance and Discharge.

            Upon the Company's exercise under Section 1101 of the option
applicable to this Section 1102, the Company shall be deemed to have been
discharged from its obligations with respect to all Outstanding Securities on
the date the conditions set forth in Section 1104 are satisfied (hereinafter,
"defeasance").  For this purpose, such defeasance means that the Company shall
be deemed to have paid and discharged the entire indebtedness represented by
the Outstanding Securities, which shall thereafter be deemed to be
"Outstanding" only for the purposes of Section 1105 and the other Sections of
this Indenture referred to in (A) and (B) below, and to have satisfied all its
other obligations under such Securities and this Indenture insofar as such
Securities are concerned (and the Trustee, at the expense of the Company,
shall execute proper instruments acknowledging the same), except for the
following which shall survive until otherwise terminated or discharged
hereunder:  (A) the rights of Holders of Outstanding Securities to receive,
solely from the trust fund described in Section 1104 and as more fully set
forth in such Section, payments in respect of the principal of (and premium, if
any, on) and interest on such Securities when such payments are due, (B) the
Company's obligations with respect to such Securities under Sections 304, 305,
306, 1002 and 1003, (C) the rights, powers, trusts, duties and immunities of
the Trustee hereunder and (D) this Article Eleven.  Subject to compliance with
this Article Eleven, the Company may exercise its option under this Section
1102 notwithstanding the prior exercise of its option under Section 1103 with
respect to the Securities.

            SECTION 1103.  Covenant Defeasance.

            Upon the Company's exercise under Section 1101 of the option
applicable to this Section 1103, the Company and the Guarantors shall be
released from their obligations under any covenant contained in Section
801(3), Section 802(3) and in Sections 1007 through 1010 with respect to the
Outstanding Securities on and after the date the conditions set forth below
are satisfied (hereinafter, "covenant defeasance"), and the Securities shall
thereafter be deemed not to be "Outstanding" for the purposes of any
direction, waiver, consent or declaration or Act of Holders (and the
consequences of any thereof) in connection with such covenants, but shall
continue to be deemed "Outstanding" for all other purposes hereunder.  For
this purpose, such covenant defeasance means that, with respect to the
Outstanding Securities, the Company and the Guarantors may omit to comply with
and shall have no liability in respect of any term, condition or limitation
set forth in any such covenant, whether directly or indirectly, by reason of
any reference elsewhere herein to any such covenant or by reason of any
reference in any such covenant to any other provision herein or in any other
document and such omission to comply shall not constitute a Default or an
Event of Default under Section 501(3), but, except as specified above, the
remainder of this Indenture and such Securities shall be unaffected thereby.

            SECTION 1104.  Conditions to Defeasance or Covenant Defeasance.

            The following shall be the conditions to application of either
Section 1102 or Section 1103 to the Outstanding Securities:

            (1)   The Company shall irrevocably have deposited or caused to be
      deposited with the Trustee (or another trustee satisfying the
      requirements of Section 607 who shall agree to comply with the
      provisions of this Article Eleven applicable to it) as trust funds in
      trust for the purpose of making the following payments, specifically
      pledged as security for, and dedicated solely to, the benefit of the
      Holders of such Securities, (A) cash in U.S. dollars in an amount, or
      (B) U.S. Government Obligations which through the scheduled payment of
      principal and interest in respect thereof in accordance with their terms
      will provide, not later than one day before the due date of any payment,
      money in an amount, or (C) a combination thereof, sufficient, in the
      opinion of a nationally recognized firm of independent public
      accountants expressed in a written certification thereof delivered to
      the Trustee, to pay and discharge, and which shall be applied by the
      Trustee (or other qualifying trustee) to pay and discharge, the principal
      of (and premium, if any, on) and interest on the Outstanding Securities
      on the Stated Maturity of such principal (and premium, if any) or
      installment of interest on the day on which such payments are due and
      payable in accordance with the terms of this Indenture and of such
      Securities; provided that the Trustee shall have been irrevocably
      instructed to apply such money or the proceeds of such U.S. Government
      Obligations to said payments with respect to the Securities.

            (2)   No Default or Event of Default with respect to the
      Securities shall have occurred and be continuing on the date of such
      deposit or, insofar as paragraphs (7) and (8) of Section 501 hereof are
      concerned, at any time during the period ending on the 91st or 367th
      day, as the case may be, after the date of such deposit (it being
      understood that this condition shall not be deemed satisfied until the
      expiration of such period).

            (3)  Such defeasance or covenant defeasance shall not result in a
      breach or violation of, or constitute a default under, this Indenture or
      any other material agreement or instrument to which the Company or any
      Guarantor is a party or by which the Company or any Guarantor is bound.

            (4)    In the case of an election under Section 1102, the Company
      shall have delivered to the Trustee an Opinion of Counsel stating that
      (x) the Company has received from, or there has been published by, the
      Internal Revenue Service a ruling, or (y) since the date hereof, there
      has been a change in the applicable federal income tax law, in either
      case to the effect that, and based thereon such opinion shall confirm
      that, the Holders of the Outstanding Securities will not recognize
      income, gain or loss for federal income tax purposes as a result of such
      defeasance and will be subject to federal income tax on the same
      amounts, in the same manner and at the same times as would have been the
      case if such defeasance had not occurred.

            (5)   In the case of an election under Section 1103, the Company
      shall have delivered to the Trustee an Opinion of Counsel to the effect
      that the Holders of the Outstanding Securities will not recognize
      income, gain or loss for federal income tax purposes as a result of such
      covenant defeasance and will be subject to federal income tax on the
      same amounts, in the same manner and at the same times as would have
      been the case if such covenant defeasance had not occurred.

            (6)   The Company shall have delivered to the Trustee an Officers'
      Certificate and an Opinion of Counsel, each stating that all conditions
      precedent provided for relating to either the defeasance under Section
      1102 or the covenant defeasance under Section 1103 (as the case may be)
      have been complied with.

            (7)   The Company shall have delivered to the Trustee an Opinion
      of Counsel stating that after the 91st day following the deposit, the
      trust funds will not be subject to the effect of any applicable
      bankruptcy, insolvency, reorganization or similar laws affecting
      creditors' rights generally; provided, however, that if counsel
      determines that it cannot deliver such opinion as a matter of law, the
      Company shall have delivered to the Trustee an Opinion of Counsel to the
      effect that after the 367th day following the deposit, the trust funds
      will not be subject to the effect of any applicable bankruptcy,
      insolvency, reorganization or similar laws affecting creditors' rights
      generally.

            (8)   The Company shall have delivered to the Trustee an Officers'
      Certificate stating that the deposit was not made by the Company with
      the intent of preferring the holders of the Securities or the Guarantees
      endorsed thereon over the other creditors of the Company or any
      Guarantor or with the intent of hindering, delaying or defrauding
      creditors of the Company or any Guarantor.

Reference in paragraph (2) above to the number of days shall mean the 91st day
if the Opinion of Counsel referred to in paragraph (7) above refers to the
91st day and shall mean the 367th day if the Opinion of Counsel referred to in
paragraph (7) above refers to the 367th day.

            SECTION 1105.  Deposited Money and U.S. Government Obligations to
Be Held in Trust; Other Miscellaneous Provisions.

            Subject to the provisions of the last paragraph of Section 1003,
all money and U.S. Government Obligations (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee--collectively for
purposes of this Section 1105, the "Trustee") pursuant to Section 1104 in
respect of the Outstanding Securities shall be held in trust and applied by
the Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of such Securities of all sums due and to become due
thereon in respect of principal (and premium, if any) and interest, but such
money need not be segregated from other funds except to the extent required
by law.

            The Company shall pay and indemnify the Trustee against any tax,
fee or other charge imposed on or assessed against the U.S. Governmental
Obligations deposited pursuant to Section 1104 or the principal and interest
received in respect thereof other than any such tax, fee or other charge which
by law is for the account of the Holders of the Outstanding Securities.

            Anything in this Article Eleven to the contrary notwithstanding,
the Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1104 which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article.

            SECTION 1106.  Reinstatement.

            If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1105 by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and each Guarantor's obligations under this
Indenture, the Securities and the Guarantees shall be revived and reinstated
as though no deposit had occurred pursuant to Section 1102 or 1103, as the case
may be, until such time as the Trustee or Paying Agent is permitted to apply
all such money in accordance with Section 1105; provided, however, that if the
Company makes any payment of principal of (or premium, if any, on) or interest
on any Security following the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
such payment from the money held by the Trustee or Paying Agent.

                                ARTICLE TWELVE

                                   GUARANTEE

            SECTION 1201.  Guarantee.

            Subject to the provisions of this Article Twelve, each Guarantor
hereby irrevocably and unconditionally guarantees, jointly and severally, on a
senior basis to each Holder and to the Trustee, on behalf of the Holders, (i)
the due and punctual payment of the principal of and interest on each
Security, when and as the same shall become due and payable, whether at Stated
Maturity or purchase upon Change in Control, and whether by declaration of
acceleration, Change in Control, call for purchase or otherwise, the due and
punctual payment of interest on the overdue principal of and interest, if any,
on the Securities, to the extent lawful, and the due and punctual performance
of all other obligations of the Company to the Holders or the Trustee all in
accordance with the terms of such Security and this Indenture and (ii) in the
case of any extension of time of payment or renewal of any Securities or any
of such other obligations, that the same will be promptly paid in full when
due or performed in accordance with the terms of the extension or renewal, at
Stated Maturity or purchase upon Change in Control, and whether by declaration
of acceleration, Change in Control, call for purchase or otherwise (the
obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  Without limiting the generality of the foregoing, each
Guarantor's liability shall extend to all amounts that constitute part of the
Guaranteed Obligations and would be owed by the Company to the Holders or the
Trustee under the Securities and the Indenture but for the fact that they are
unenforceable or not allowable due to the existence of a bankruptcy,
reorganization or similar proceeding involving the Company.  The Guarantors
hereby agree that their obligations hereunder shall be absolute and
unconditional, irrespective of, and shall be unaffected by, any invalidity,
irregularity or unenforceability of any such Security or this Indenture, any
failure to enforce the provisions of any such Security or this Indenture, any
waiver, modification or indulgence granted to the Company with respect
thereto, by any Guaranteed Party or any other circumstances which may
otherwise constitute a legal or equitable discharge or defense of the Company
or a surety or guarantor.  The Guarantors hereby waive diligence, presentment,
filing of claims with a court in the event of merger or bankruptcy of the
Company, any right to require a proceeding first against the Company, the
benefit of discussion, protest or notice with respect to any such Security or
the Indebtedness evidenced thereby and all demands whatsoever (except as
specified above), and covenant that this Guarantee will not be discharged as
to any such Security except by payment in full of the Guaranteed Obligations
and as provided in Sections 401, 1102 and 1207.  Each Guarantor further agrees
that, as between such Guarantor and the Guaranteed Parties, (i) the maturity
of the Guaranteed Obligations may be accelerated as provided in Article Five
for the purposes of this Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the Guaranteed
Obligations, and (ii) in the event of any declaration of acceleration of such
Guaranteed Obligations as provided in Article Five, such Guaranteed
Obligations (whether or not due and payable) shall forthwith become due and
payable by each Guarantor for the purpose of this Guarantee.  In addition,
without limiting the foregoing provisions, upon the effectiveness of an
acceleration under Article Five, the Trustee shall promptly make a demand for
payment on the Securities under each Guarantee provided for in this Article
Twelve and not discharged.

            Each Guarantor hereby irrevocably waives any claim or other rights
that it may now or hereafter acquire against the Company that arise from the
existence, payment, performance or enforcement of such Guarantor's obligations
under this Indenture, or any other document or instrument including, without
limitation, any right of subrogation, reimbursement, exoneration,
contribution, indemnification, any right to participate in any claim or remedy
of the Guaranteed Parties against the Company, whether or not such claim,
remedy or right arises in equity, or under contract, statute or common law,
including, without limitation, the right to take or receive from the Company,
directly or indirectly, in cash or other property or in any other manner,
payment or security on account of such claim or other rights.  If any amount
shall be paid to any Guarantor in violation of the preceding sentence and the
Guaranteed Obligations shall not have been paid in full, such amount shall be
deemed to have been paid to such Guarantor for the benefit of, and held in
trust for the benefit of, the Guaranteed Parties, and shall forthwith be paid
to the Trustee.  Each Guarantor acknowledges that it will receive direct and
indirect benefits from the issuance of the Securities and that the waiver set
forth in this paragraph is knowingly made in contemplation of such benefits.

            SECTION 1202.  Obligations of the Guarantors Unconditional.

            Nothing contained in this Article Twelve, elsewhere in this
Indenture or in any Security or in the Guarantee is intended to or shall
impair, as between the Guarantors and the Holders, the obligation of the
Guarantors, which obligations are independent of the obligations of the
Company under the Securities and this Indenture and are absolute and
unconditional, to pay to the Holders the Guaranteed Obligations as and when
the same shall become due and payable in accordance with the provisions of
this Guarantee and this Indenture, or is intended to or shall affect the
relative rights of the Holders and creditors of the Guarantors, nor shall
anything herein or therein prevent the Trustee or any Holder from exercising
all remedies otherwise permitted by applicable law upon Default under this
Indenture.  Each payment to be made by any Guarantor hereunder in respect of
the Guaranteed Obligations shall be payable in the currency or currencies in
which such Guaranteed Obligations are denominated.

            SECTION 1203.  Execution of Guarantee.

            To evidence its obligations under this Article Twelve, each
Guarantor hereby agrees to execute a guarantee substantially in the form set
forth in Section 205 hereof, to be endorsed on each Security authenticated and
delivered by the Trustee and that this Indenture shall be executed on behalf
of the Guarantors by their respective Chairmen of the Board, Presidents or
Vice Presidents, under their corporate seals reproduced thereon attested by
their respective Secretaries or Assistant Secretaries.  The signature of any
of these officers on the Securities may be manual or facsimile.  Each
Guarantor hereby agrees that its Guarantee set forth in this Article Twelve
shall remain in full force and effect notwithstanding any failure to endorse
such Guarantee on any Security.

            If an officer whose signature is on this Indenture no longer holds
that office at the time the Trustee authenticates a Security on which this
Guarantee is endorsed, the Guarantee shall be valid nevertheless.

            SECTION 1204.  Ranking of Guarantee.

            Each Guarantor covenants and agrees, and each Holder of a Security
by his acceptance thereof likewise covenants and agrees, that each Guarantee
will be an unsecured senior obligation of the Guarantor issuing such
Guarantee, ranking pari passu in right of payment with all other existing and
future Guarantor Senior Indebtedness.

            SECTION 1205.  Withholding.

            All payments made by a Guarantor with respect to the Guarantees
will be made without withholding or deduction for, or on account of, any
present or future taxes, duties, assessments or governmental charges of
whatever nature imposed or levied by or on behalf of Bermuda or any other
country (other than the United States) or any political subdivision thereof or
any authority therein or thereof, having power to tax, unless the withholding
or deduction of such taxes, duties, assessments or governmental charges is
then required by law.  In the event that Bermuda or any other country (other
than the United States) or any political subdivision thereof or any authority
therein or thereof, imposes any such withholding or deduction on (i) any
payments made by a Guarantor with respect to the Guarantees or (ii) any net
proceeds on the sale to or exchange with any Guarantor of the Securities, such
Guarantor will pay such additional amounts (the "Additional Amounts") as may
be necessary in order that the net amounts received in respect of such
payments or sale or exchange by the Holders of the Securities or the Trustee,
as the case may be, after such withholding or deduction shall equal the
respective amounts that would have been received in respect of such payments or
sale or exchange in the absence of such withholding or deduction; except that
no such Additional Amounts shall be payable with respect to any Security held
by or on behalf of a holder who is liable for such taxes, duties, assessments
or governmental charges in respect of such Security by reason of his being a
citizen or resident of, or carrying on a business in, Bermuda or the country
of residence of any Guarantor.  Notwithstanding the foregoing, a Guarantor
making a payment on the Securities pursuant to the Guarantee shall not be
required to pay any Additional Amounts if (i) the beneficial holder of a
Security receives by certified mail (evidenced by a return receipt signed by
such beneficial holder) (A) written notice from such Guarantor no less than 60
days in advance of making such payment and (B) the appropriate forms or
instructions necessary to enable such beneficial holder to certify or document
the availability of an exemption from, or reduction of, the withholding or
deduction of such taxes under applicable law, which such instructions shall
clearly specify that Additional Amounts hereunder may not be paid if such
forms are not completed by such beneficial holder, and (ii) the Guarantor that
would otherwise have to pay such Additional Amounts establishes to the
satisfaction of the Trustee that the obligation to pay such Additional Amounts
would not have arisen but for the failure of such beneficial holder to (A) duly
complete such forms as were actually received by such beneficial holder or
respond to such instructions and (B) provide to such Guarantor such duly
completed forms or responses to instructions.  Without prejudice to the
survival of any other agreement of the Guarantors hereunder, the agreements
and obligations of the Guarantors contained in this Section 1205 shall survive
the payment in full of the Guaranteed Obligations and all other amounts payable
under this Guarantee.

            SECTION 1206.  Limitation of Subsidiary Guarantee.

            The Company and each Guarantor, and each Holder of a Security by
his acceptance thereof, hereby confirm that it is the intention of all such
parties that any Guarantee of the Guaranteed Obligations executed by a
Subsidiary Guarantor not constitute a fraudulent transfer or conveyance for
purposes of the Federal Bankruptcy Code, the Uniform Fraudulent Conveyance Act
or any similar federal or state law.  To effectuate the foregoing intention,
the Holders hereby irrevocably agree that in the event that any such Guarantee
would constitute or result in a violation of any applicable fraudulent
conveyance or similar law of any relevant jurisdiction, the liability of the
Subsidiary Guarantor under such Guarantee shall be reduced to the maximum
amount, after giving effect to all other contingent and fixed liabilities of
such Subsidiary Guarantor, permissible under the applicable fraudulent
conveyance or similar law.

            SECTION 1207.  Release of Guarantee.

            (a)   Concurrently with the payment in full of all of the
Guaranteed Obligations, the Guarantors shall be released from and relieved of
their obligations under this Article Twelve.  Upon the delivery by the Company
to the Trustee of an Officers' Certificate and, if requested by the Trustee,
an Opinion of Counsel to the effect that the transaction giving rise to the
release of such obligations was made by the Company in accordance with the
provisions of this Indenture and the Securities, the Trustee shall execute any
documents reasonably required in order to evidence the release of the
Guarantors from their obligations.  If any of the Guaranteed Obligations are
revived and reinstated after the termination of this Guarantee, then all of
the obligations of the Guarantors under this Guarantee shall be revived and
reinstated as if this Guarantee had not been terminated until such time as the
Guaranteed Obligations are paid in full, and the Guarantors shall enter into
an amendment to this Guarantee, reasonably satisfactory to the Trustee,
evidencing such revival and reinstatement.

            (b)   Upon (i) the sale or disposition of all of the Common Stock
of a Subsidiary Guarantor (by merger or otherwise) to a Person other than the
Company, ADT Limited or another Restricted Subsidiary and which sale or
disposition is otherwise in compliance with the terms of this Indenture, or
(ii) the unconditional and full release in writing of such Subsidiary
Guarantor from all Indebtedness (including, without limitation, Indebtedness
under the New Bank Credit Agreement, but excluding any Permitted Non-Guarantor
Indebtedness (other than Indebtedness specified in subparagraph (i) of the
definition of "Permitted Non-Guarantor Indebtedness" or any renewals,
extensions, substitutions or replacements thereof), such Subsidiary Guarantor
shall be deemed released from all obligations under this Article Twelve;
provided, however, that any such termination upon such sale or disposition
shall occur if and only to the extent that all obligations of such Subsidiary
Guarantor under all of its guarantees of, and under all of its pledges of
assets or other security interests which secure, Indebtedness of the Company,
ADT Limited or any Restricted Subsidiary shall also terminate upon such sale
or disposition.  Upon the delivery by the Company to the Trustee of an
Officers' Certificate and, if requested by the Trustee, an Opinion of Counsel
to the effect that the transaction giving rise to the release of such
obligations was made in accordance with the provisions of this Indenture and
the Securities, the Trustee shall execute any documents reasonably required in
order to evidence the release of such Subsidiary Guarantor from its
obligations.  Any Subsidiary Guarantor not so released remains liable for the
full amount of principal of and interest on the Securities as provided in this
Article Twelve.

            This Indenture may be signed in any number of counterparts each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same Indenture.


            IN WITNESS WHEREOF, the parties hereto have caused this Indenture
to be duly executed, and their respective corporate seals to be hereunto
affixed and attested, all as of the day and year first above written.

                                          ADT OPERATIONS, INC.

[SEAL]                                    By /s/ Jan S. Beck
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT LIMITED

[SEAL]                                    By /s/ Stephen Ruzika
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT GENERAL HOLDINGS, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:

                                          ADT SECURITY SERVICES, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:

                                          ADT SECURITY SYSTEMS, WEST, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT AUTOMOTIVE HOLDINGS, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT AUTOMOTIVE, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          AA PROPERTY HOLDINGS, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT INVESTMENTS, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          AAAA DEALERS SERVICES INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT BUSINESS HOLDINGS, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT PROPERTY HOLDINGS, INC.

[SEAL]                                    By /s/ Steven Levine
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT SECURITY SYSTEMS
                                             MANUFACTURING, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          MID-ATLANTIC SECURITY, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:

                                          ADT AUTOMOTIVE SERVICES, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          AUCTION TRANSPORT, INC.

[SEAL]                                    By /s/ Richard H. Miller
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          BRITISH CAR AUCTIONS, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          CCTC INTERNATIONAL, INC.

[SEAL]                                    By /s/ Ann Olbert
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          ADT SPECIALTY AUCTIONS, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          FLYING LION, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          TRI-CITY AUTO AUCTION, INC.

[SEAL]                                    By /s/ Larry C. Reese
                                             --------------------
                                             Title:
Attest:
       --------------------
       Title:
                                          THE CHASE MANHATTAN BANK

[SEAL]                                    By /s/ Philbert Jones
                                             --------------------
                                             Title: Trust Officer
Attest:
       --------------------
       Title:



<PAGE>


                                                                 EXHIBIT 10.3
==============================================================================

                             ADT OPERATIONS, INC.,

                                  as Issuer,

                                      AND

                                 ADT LIMITED,

                                 as Guarantor,

                                      AND

                             THE BANK OF NEW YORK,

                                  as Trustee
                                _______________

                         First Supplemental Indenture
                 to the Indenture, dated as of August 4, 1993,
                  among ADT Operations, Inc., ADT Limited, as
               Guarantor, and The Bank of New York, as Trustee,
                           dated as of July 1, 1997
                                _______________

                                 $350,000,000

                  9 1/4 % Senior Subordinated Notes due 2003

==============================================================================


               FIRST SUPPLEMENTAL INDENTURE, dated as of July 1, 1997 between
ADT OPERATIONS, INC., a Delaware corporation, as Issuer (the "Company"), ADT
LIMITED, a Bermuda Corporation, as Guarantor (the "Guarantor"), and THE BANK
OF NEW YORK, as trustee (the "Trustee").

                    RECITALS OF THE COMPANY AND THE GUARANTOR

               The Company executed and delivered an Indenture dated as of
August 4, 1993 (the "Indenture") between the Company, the Guarantor and the
Trustee pursuant to which $350,000,000 of the Company's 9 1/4% Senior
Subordinated Notes due 2003 (the "Notes") was issued.

               The Guarantor, the indirect parent of the Company,  has entered
into an Agreement and Plan of Merger dated as of March 17, 1997 among the
Guarantor, Limited Apache, Inc. ("Merger Sub"), a wholly owned subsidiary of
the Guarantor and a Massachusetts corporation, and Tyco International Ltd.
("Tyco"), a Massachusetts corporation, pursuant to which Merger Sub will be
merged with and into Tyco (the "Merger").

               Sections 902 and 1021 of the Indenture provide that the
Indenture may be amended with the consent of the Holders of a majority in
principal amount of the Outstanding Notes.

               The Company and ADT Limited wish to amend the Indenture as set
forth below, and the required Holders of the Notes have consented to the
execution of this First Supplemental Indenture pursuant to the consent
solicitation made by the Company through the Offer to Purchase and Consent
Solicitation dated June 4, 1997.

               All other conditions and requirements necessary to make this
First Supplemental Indenture a valid and binding instrument in accordance with
its terms have been satisfied.

               NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

               For and in consideration of the premises, the prior purchase of
the Notes by the Holders thereof and the receipt of consideration pursuant to a
simultaneous tender offer and consent solicitation by the Company for the
Securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Notes, as follows:

                                   ARTICLE 1
            Definitions and Other Provisions of General Application

               SECTION 101.  Capitalized Terms.  For all purposes of this First
Supplemental Indenture, except as otherwise expressly provided or unless the
context otherwise requires, capitalized terms used and not defined herein shall
have the meanings assigned in the Indenture.


               SECTION 102.  Effectiveness.  (a) This First Supplemental
Indenture shall become effective, and shall bind the parties hereto, upon its
execution by the Company, the Guarantor and the Trustee.

           (b)  Notwithstanding the foregoing, the amendments to the Indenture
contained in Article Two hereof (the "Amendments") shall not become operative,
and shall not be binding on the Company, the Guarantor or the Trustee, until
delivery by the Company to the Trustee of an Officers' Certificate certifying
that the Merger has been consummated and that the Notes have been accepted for
purchase by the Company.  In the event that the Merger is not consummated or
the Notes are not accepted for purchase by the Company, the Amendments shall
not become operative and shall not bind the Company, the Guarantor or the
Trustee and this First Supplemental Indenture shall lapse automatically and be
of no further force or effect.  Upon such termination, the Company shall
deliver to the Trustee an Officers' Certificate certifying that the Merger has
not been consummated and/or that the Notes have not been accepted for purchase
by the Company, as the case may be.

               SECTION 103.  Incorporation of First Supplemental Indenture
into Indenture.  This First Supplemental Indenture is executed by the
Company, the Guarantor and the Trustee pursuant to the provisions of
Section 902 of the Indenture, and the terms and conditions hereof shall be
deemed to be part of the Indenture for all purposes upon effectiveness of
this First Supplemental Indenture and every Holder of Notes theretofore or
thereafter authenticated and delivered under the Indenture shall be bound
hereby.  The Indenture as supplemented by this First Supplemental Indenture
is hereby in all respects ratified and confirmed.

               SECTION 104.  Effect of Headings.  The Article and Section
headings herein are for convenience only and shall not affect the construction
hereof.

               SECTION 105.  Governing Law.  This First Supplemental Indenture
shall be governed by and construed in accordance with the law of the State of
New York.  This Indenture is subject to the provisions of the Trust Indenture
Act that are required to be part of this Indenture and shall, to the extent
applicable, be governed by such provisions.

               SECTION 106.  Counterparts.  This First Supplemental Indenture
may be executed in any number of counterparts, each of which so executed shall
be deemed to be an original, but all such counterparts shall together
constitute but one and the same instrument.

               SECTION 107.  Recitals.  The recitals contained herein shall be
taken as the statements of the Company and the Guarantor, and the Trustee
assumes no responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this First Supplemental
Indenture, except that the Trustee represents that it is duly authorized to
execute and deliver this First Supplemental Indenture and perform its
obligations hereunder.

                                   ARTICLE 2
                     Amendments to Provisions of Indenture

               SECTION 201.  Amendments.  Subject to the conditions of Section
102(b) herein, the Indenture is hereby amended as set forth in the form of the
Amended and Restated Indenture attached hereto as Exhibit A.

               IN WITNESS WHEREOF, the parties hereto have caused this First
Supplemental Indenture to be duly executed as of the day and year first above
written.


                                    ADT OPERATIONS, INC.


                                    By: /s/ Jan S. Beck
                                        --------------------------
                                        Name:
                                        Title:


                                    ADT LIMITED



                                    By: /s/ Stephen Ruzika
                                        ----------------------------------
                                        Name:
                                        Title:


                                    THE BANK OF NEW YORK



                                    By: /s/ Sandra Carreker
                                        ----------------------------------
                                        Name: SANDRA CARREKER
                                        Title: Vice President as Agent



                                                            EXHIBIT A


                             ADT OPERATIONS, INC.,

                                  as Issuer,

                                      AND

                                 ADT LIMITED,

                                 as Guarantor,

                                      AND

                             THE BANK OF NEW YORK,

                                  as Trustee

                                _______________


                        Amended and Restated Indenture

                              Dated as of  bullet, 1997

                                _______________


                                 $350,000,000


                   9 1/4% Senior Subordinated Notes due 2003


                             ADT OPERATIONS, INC.

              Reconciliation and tie between Trust Indenture Act
               of 1939 and Indenture, dated as of August 4, 1993


Trust Indenture                                                 Indenture
  Act Section                                                     Section
- ---------------                                                  ---------

Section  310(a)(1).............................................  607
         (a)(2)................................................  607
         (b)...................................................  701
Section  314(a)................................................  703
         (a)(4)................................................  1008(a)
         (c)(1)................................................  102
         (c)(2)................................................  102
         (e)...................................................  102
Section  315(b)................................................  601
Section  316(a)(last
         sentence).............................................  101
                                                                 ("Outstanding")
         (a)(1)(A).............................................  502, 512
         (a)(1)(B).............................................  513
         (b)...................................................  508
         (c)...................................................  104(d)
Section  317(a)(1).............................................  503
         (a)(2)................................................  504
         (b)...................................................  1003
Section  318(a)................................................  111


                               TABLE OF CONTENTS

                                                                       PAGE

PARTIES.................................................................. 1
RECITALS................................................................. 1


                               ARTICLE ONE

                    DEFINITIONS AND OTHER PROVISIONS
                         OF GENERAL APPLICATION

SECTION 101.      Definitions............................................. 2
      Act................................................................. 2
      ADT Limited......................................................... 2
      Affiliate........................................................... 2
      Agent............................................................... 3
      Board of Directors.................................................. 3
      Board Resolution.................................................... 3
      Business Day........................................................ 3
      Capitalized Lease Obligation........................................ 3
      Capital Stock....................................................... 3
      Cash Equivalents.................................................... 3
      Change in Control................................................... 4
      Commission.......................................................... 5
      Common Stock........................................................ 5
      Company............................................................. 5
      Company Request..................................................... 5
      Consolidated Net Worth.............................................. 5
      Corporate Trust Office.............................................. 5
      corporation......................................................... 5
      Default............................................................. 5
      Defaulted Interest.................................................. 5
      Designated Guarantor Senior Indebtedness............................ 5
      Designated Senior Indebtedness...................................... 6
      Dollar Equivalent................................................... 6
      Event of Default.................................................... 6
      Exchange Act........................................................ 6
      Federal Bankruptcy Code............................................. 6
      Finance Canada Preferred Stock...................................... 6
      Generally Accepted Accounting Principles............................ 6
      Guaranteed Obligations.............................................. 7
      Guaranteed Parties.................................................. 7
      Guarantees.......................................................... 7
      Guarantor........................................................... 7
      Guarantor Non-payment Default....................................... 7
      Guarantor Payment Default........................................... 7
      Guarantor Senior Indebtedness....................................... 7
      Holder.............................................................. 8
      Indebtedness........................................................ 8
      Indenture........................................................... 8
      Interest Payment Date............................................... 8
      Laidlaw Group....................................................... 9
      Lender.............................................................. 9
      Lien................................................................ 9
      Material Restricted Subsidiary...................................... 9
      Maturity............................................................ 9
      New Bank Credit Agreement........................................... 9
      Non-Guarantor....................................................... 10
      Non-payment Default................................................. 10
      Officers' Certificate............................................... 10
      Opinion of Counsel.................................................. 10
      Outstanding......................................................... 10
      Paying Agent........................................................ 11
      Payment Default..................................................... 11
      Person.............................................................. 11
      Post-Merger Entity.................................................. 11
      Predecessor Security................................................ 11
      Preferred Stock..................................................... 12
      Redeemable Capital Stock............................................ 12
      Redemption Date..................................................... 12
      Redemption Price.................................................... 12
      Reference Banks..................................................... 12
      Regular Record Date................................................. 12
      Responsible Officer................................................. 12
      Restricted Subsidiary............................................... 12
      Securities.......................................................... 13
      Security Register................................................... 13
      Senior Indebtedness................................................. 13
      Senior Note Indenture............................................... 13
      Senior Notes........................................................ 14
      Special Record Date................................................. 14
      Stated Maturity..................................................... 14
      Subordinated Indebtedness........................................... 14
      Subsidiary.......................................................... 14
      Subsidiary Guarantor................................................ 14
      Surviving Entity.................................................... 14
      Trust Indenture Act" or "TIA........................................ 14
      Trustee............................................................. 14
      Tyco................................................................ 14
      Unrestricted Subsidiary............................................. 14
      U.S. Government Obligations......................................... 15
      Vice President...................................................... 16
      Voting Stock........................................................ 16
      Wholly Owned Restricted Subsidiary.................................. 16
SECTION 102.      Compliance Certificates and Opinions.................... 16
SECTION 103.      Form of Documents Delivered to Trustee.................. 17
SECTION 104.      Acts of Holders......................................... 18
SECTION 105.      Notices, etc., to Trustee, Company, Guarantors and Agent 19
SECTION 106.      Notice to Holders; Waiver............................... 19
SECTION 107.      Effect of Headings and Table of Contents................ 20
SECTION 108.      Successors and Assigns.................................. 20
SECTION 109.      Separability Clause..................................... 20
SECTION 110.      Benefits of Indenture................................... 20
SECTION 111.      Governing Law........................................... 21
SECTION 112.      Legal Holidays.......................................... 21
SECTION 113.      No Recourse Against Others.............................. 21
SECTION 114.      Submission to Jurisdiction.............................. 21

                               ARTICLE TWO

                             SECURITY FORMS

SECTION 201.      Forms Generally......................................... 22
SECTION 202.      Form of Face of Security................................ 22
SECTION 203.      Form of Reverse of Security............................. 25
SECTION 204.      Form of Trustee's Certificate of Authentication......... 28
SECTION 205.      Form of Guarantee....................................... 28

                              ARTICLE THREE

                             THE SECURITIES

SECTION 301.      Title and Terms......................................... 29
SECTION 302.      Denominations........................................... 30
SECTION 304.      Temporary Securities.................................... 31
SECTION 305.      Registration, Registration of Transfer and Exchange..... 32
SECTION 306.      Mutilated, Destroyed, Lost and Stolen Securities........ 33
SECTION 307.      Payment of Interest; Interest Rights Preserved.......... 34
SECTION 308.      Persons Deemed Owners................................... 35
 SECTION 309.      Cancellation........................................... 35
SECTION 310.      Computation of Interest................................. 36

                              ARTICLE FOUR

                       SATISFACTION AND DISCHARGE

SECTION 401.      Satisfaction and Discharge of Indenture................. 36
SECTION 402.      Application of Trust Money.............................. 37

                              ARTICLE FIVE

                                REMEDIES

SECTION 501.      Events of Default....................................... 37
SECTION 502.      Acceleration of Maturity; Rescission and Annulment...... 40
SECTION 503.      Collection of Indebtedness and Suits for Enforcement by
                    Trustee............................................... 42
SECTION 504.      Trustee May File Proofs of Claim........................ 42
SECTION 505.      Trustee May Enforce Claims Without Possession of
                    Securities............................................ 43
SECTION 506.      Application of Money Collected.......................... 44
SECTION 507.      Limitation on Suits..................................... 44
SECTION 508.      Unconditional Right of Holders to Receive Principal,
                    Premium and Interest.................................. 45
SECTION 509.      Restoration of Rights and Remedies...................... 45
SECTION 510.      Rights and Remedies Cumulative.......................... 45
SECTION 511.      Delay or Omission Not Waiver............................ 46
SECTION 512.      Control by Holders...................................... 46
SECTION 513.      Waiver of Past Defaults................................. 46
SECTION 514.      Waiver of Stay or Extension Laws........................ 47
SECTION 515.      Undertaking for Costs................................... 47

                               ARTICLE SIX

                               THE TRUSTEE

SECTION 601.      Notice of Defaults...................................... 47
SECTION 602.      Certain Rights of Trustee............................... 48
SECTION 603.      Trustee Not Responsible for Recitals or Issuance of
                     Securities........................................... 49
SECTION 604.      May Hold Securities..................................... 50
SECTION 605.      Money Held in Trust..................................... 50
SECTION 606.      Compensation and Reimbursement.......................... 50
SECTION 607.      Corporate Trustee Required; Eligibility................. 51
SECTION 608.      Resignation and Removal; Appointment of Successor....... 51
SECTION 609.      Acceptance of Appointment by Successor.................. 52
SECTION 610.      Merger, Conversion, Consolidation or Succession to
                     Business............................................. 53

                              ARTICLE SEVEN

            HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

SECTION 701.      Disclosure of Names and Addresses of Holders............ 54
SECTION 702.      Reports by Trustee...................................... 54
SECTION 703.      Reports by Company and the Guarantors................... 54

                              ARTICLE EIGHT

          CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

SECTION 801.      ADT Limited or Any Restricted Subsidiary May Consolidate,
                     etc., Only on Certain Terms.......................... 55
SECTION 802.      ADT Limited May Amalgamate, Redomesticate, etc., Only on
                     Certain Terms........................................ 56
SECTION 803.      Successor Substituted................................... 57

                              ARTICLE NINE

                         SUPPLEMENTAL INDENTURES

SECTION 901.      Supplemental Indentures Without Consent of Holders...... 58
SECTION 902.      Supplemental Indentures with Consent of Holders......... 59
SECTION 903.      Execution of Supplemental Indentures.................... 60
SECTION 904.      Effect of Supplemental Indentures....................... 60
SECTION 905.      Conformity with Trust Indenture Act..................... 60
SECTION 906.      Reference in Securities to Supplemental Indentures...... 60
SECTION 907.      Notice of Supplemental Indentures....................... 61
SECTION 908.      Effect on Senior Indebtedness........................... 61

                               ARTICLE TEN

                                COVENANTS

SECTION 1001.     Payment of Principal, Premium, if any, and Interest..... 61
SECTION 1002.     Maintenance of Office or Agency......................... 61
SECTION 1003.     Money for Security Payments to Be Held in Trust......... 62
SECTION 1004.     Corporate Existence..................................... 63
SECTION 1005.     Payment of Taxes and Other Claims....................... 63
SECTION 1006.     Maintenance of Properties............................... 64
SECTION 1007.     Insurance............................................... 64
SECTION 1008.     Statement by Officers As to Default..................... 64
SECTION 1009.     Provision of Financial Statements....................... 65
SECTION 1010.     Purchase of Securities upon Change in Control........... 65
[SECTIONS 1011-1020 intentionally omitted.]............................... 66
SECTION 1021.     Waiver of Certain Covenants............................. 66

                             ARTICLE ELEVEN

                        REDEMPTION OF SECURITIES

SECTION 1101.     Right of Redemption..................................... 67
SECTION 1102.     Applicability of Article................................ 67
SECTION 1103.     Election to Redeem; Notice to Trustee................... 67
SECTION 1104.     Selection by Trustee of Securities to Be Redeemed....... 67
SECTION 1105.     Notice of Redemption.................................... 68
SECTION 1106.     Deposit of Redemption Price............................. 69
SECTION 1107.     Securities Payable on Redemption Date................... 69
SECTION 1108.     Securities Redeemed in Part............................. 69

                             ARTICLE TWELVE

                   DEFEASANCE AND COVENANT DEFEASANCE

SECTION 1201.     Company's Option to Effect Defeasance or Covenant
                     Defeasance........................................... 70
SECTION 1202.     Defeasance and Discharge................................ 70
SECTION 1203.     Covenant Defeasance..................................... 70
SECTION 1204.     Conditions to Defeasance or Covenant Defeasance......... 71
SECTION 1205.     Deposited Money and U.S. Government Obligations to Be
                     Held in Trust; Other Miscellaneous Provisions........ 73
SECTION 1206.     Reinstatement........................................... 74

                            ARTICLE THIRTEEN

                                GUARANTEE

SECTION 1301.     Guarantee............................................... 74
SECTION 1302.     Obligations of the Guarantors Unconditional............. 76
SECTION 1303.     Execution of Guarantee.................................. 76
SECTION 1304.     Guarantees Subordinate to Guarantor Senior Indebtedness. 77
SECTION 1305.     Payment over of Proceeds upon Dissolution, etc.......... 77
SECTION 1306.     Suspension of Payment When Designated Guarantor Senior
                     Indebtedness in Default.............................. 79
SECTION 1307.     Payment Permitted If No Default......................... 81
SECTION 1308.     Subrogation to Rights of Holders of Guarantor Senior
                     Indebtedness......................................... 81
SECTION 1309.     Trustee to Effectuate Subordination..................... 82
SECTION 1310.     No Waiver of Subordination Provisions................... 82
SECTION 1311.     Notice to Trustee....................................... 82
SECTION 1312.     Reliance on Judicial Order or Certificate of Liquidating
                     Agent................................................ 83
SECTION 1313.     Rights of Trustee As a Holder of Guarantor Senior
                     Indebtedness; Preservation of Trustee's Rights....... 84
SECTION 1314.     Article Applicable to Paying Agents..................... 84
SECTION 1315.     No Suspension of Remedies............................... 84
SECTION 1316.     Trust Moneys Not Subordinated........................... 84
SECTION 1317.     Trustee's Relation to Guarantor Senior Indebtedness..... 85
SECTION 1318.     Withholding............................................. 85
SECTION 1319.     Release of Guarantee.................................... 86

                            ARTICLE FOURTEEN

                       SUBORDINATION OF SECURITIES

SECTION 1401.     Securities Subordinate to Senior Indebtedness........... 87
SECTION 1402.     Payment over of Proceeds upon Dissolution, etc.......... 87
SECTION 1403.     Suspension of Payment When Designated Senior Indebtedness
                     in Default........................................... 89
SECTION 1404.     Payment Permitted If No Default......................... 91
SECTION 1405.     Subrogation to Rights of Holders of Senior Indebtedness. 91
SECTION 1406.     Provisions Solely to Define Relative Rights............. 91
SECTION 1407.     Trustee to Effectuate Subordination..................... 92
SECTION 1408.     No Waiver of Subordination Provisions................... 92
SECTION 1409.     Notice to Trustee....................................... 93
SECTION 1410.     Reliance on Judicial Order or Certificate of Liquidating
                     Agent................................................ 94
SECTION 1411.     Rights of Trustee As a Holder of Senior Indebtedness;
                     Preservation of Trustee's Rights..................... 94
SECTION 1412.     Article Applicable to Paying Agents..................... 94
SECTION 1413.     No Suspension of Remedies............................... 94
SECTION 1414.     Trust Moneys Not Subordinated........................... 95
SECTION 1415.     Trustee's Relation to Senior Indebtedness............... 95

- -------------
Note:  This table of contents shall not, for any purpose, be deemed to be a
part of this Indenture


         AMENDED AND RESTATED INDENTURE, dated as of o, 1997 among ADT
OPERATIONS, INC., a corporation duly organized and existing under the laws of
the State of Delaware (herein called the "Company"), having its principal
office at 902 Market Street, 13th Floor, Wilmington, Delaware 19899, as
Issuer, ADT LIMITED, a company duly organized and existing under the laws of
Bermuda ("ADT Limited"), having its principal office at Cedar House, 41 Cedar
Avenue, Hamilton HM12, Bermuda, as Guarantor (the "Guarantor"), and THE BANK
OF NEW YORK, a national banking association duly organized and existing under
the laws of the United States of America, as Trustee (herein called the
"Trustee").


                   RECITALS OF THE COMPANY AND THE GUARANTOR

         The Company has duly authorized the creation of an issue of 9-1/4%
Senior Subordinated Notes due 2003 (herein called the "Securities"), of
substantially the tenor and amount hereinafter set forth, and to provide
therefor the Company has duly authorized the execution and delivery of The
Indenture, dated as of August 3, 1993 among the Company, ADT Limited and the
Trustee (the "1993 Senior Subordinated Note Indenture") and the Securities.

         The Guarantor has duly authorized the issuance of a guarantee (the
"Guarantee") of the Securities, of substantially the tenor hereinafter set
forth, and to provide therefor the Guarantor duly authorized the execution and
delivery of the 1993 Senior Subordinated Notes Indenture and the Guarantee.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities, by Act of said Holders delivered to the Company and
the Trustee, have authorized certain amendments to the 1993 Senior
Subordinated Note Indenture.

         The Company, the Guarantor and the Trustee has duly authorized the
execution and delivery of this Indenture.

         This Indenture is subject to the provisions of the Trust Indenture
Act of 1939, as amended, that are required to be part of this Indenture and
shall, to the extent applicable, be governed by such provisions.

         All things necessary have been done to make (i) the Securities the
valid obligations of the Company, (ii) the Guarantee the valid obligation of
the Guarantor and (iii) this Indenture a valid agreement of the Company and
the Guarantor, in accordance with their respective terms.

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

         For and in consideration of the premises, the prior purchase of the
Securities by the Holders thereof and the receipt of consideration pursuant to
a simultaneous tender offer and consent solicitation by the Company for the
Securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Securities, as follows:


                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

         SECTION 101.   Definitions.

         For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

         (a)   the terms defined in this Article have the meanings assigned to
   them in this Article, and include the plural as well as the singular;

         (b)   all other terms used herein which are defined in the Trust
   Indenture Act, either directly or by reference therein, have the meanings
   assigned to them therein, and the terms "cash transaction" and
   "self-liquidating paper", as used in TIA Section 311, shall have the
   meanings assigned to them in the rules of the Commission adopted under the
   Trust Indenture Act; and

         (c)   the words "herein", "hereof" and "hereunder" and other words of
   similar import refer to this Indenture as a whole and not to any particular
   Article, Section or other subdivision.

         Certain terms, used principally in Article Ten, are defined in that
Article.

         "Act", when used with respect to any Holder, has the meaning
specified in Section 104 hereof.

         "ADT Limited" means ADT Limited, a Bermuda company.

         "Affiliate" of any specified Person means (i) any other Person
directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person or (ii) any officer or
director of such specified Person.  For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

         "Agent" means The Bank of Nova Scotia, as agent under the New Bank
Credit Agreement, and any future such agent or agents under the New Bank
Credit Agreement.

         "Board of Directors" means the board of directors of ADT Limited;
provided, however, that for purposes of the proviso of Section 1004 hereof
with respect to any right or franchise of a Restricted Subsidiary other than
the Company, "Board of Directors" shall include any committee of such Board of
Directors duly authorized to act under this Indenture.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of ADT Limited, the Company or any other
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors of ADT Limited or the board of directors of the Company or such
other Guarantor, as the case may be, and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

         "Business Day" means each Monday, Tuesday, Wednesday, Thursday and
Friday which is not a day on which banking institutions in The City of New
York or the city in which the Corporate Trust Office is located are authorized
or obligated by law or executive order to close.

         "Capitalized Lease Obligation" means any obligation under any capital
lease of real or personal property that, in accordance with GAAP, has been
recorded as a capitalized lease obligation, and, for purposes of this
Indenture, the amount of such obligation at any date shall be the capitalized
amount thereof at such date, determined in accordance with GAAP.

         "Capital Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated) of
such Person's capital stock whether now outstanding or issued after the date
hereof, including, without limitation, all Common Stock and Preferred Stock.

         "Cash Equivalents" means (i) any evidence of Indebtedness with a
maturity of 180 days or less issued or directly and fully guaranteed or
insured by the United States of America or any agency or instrumentality
thereof (provided that the full faith and credit of the United States of
America is pledged in support thereof); (ii) certificates of deposit or time
deposits with a maturity of 180 days or less of any financial institution that
is a member of the Federal Reserve System having combined capital and surplus
and undivided profits of not less than $500,000,000 (x) whose short term
obligations have a rating, at the time as of which any such Investment is
made, of "P-1" (or higher) according to Moody's Investors Service, Inc. or
"A-1" (or higher) according to Standard & Poor's Corporation or (y) whose debt
is rated, at the time as of which any Investment therein is made, "A" (or
higher) according to Moody's Investors Service, Inc. or "A" (or higher)
according to Standard & Poor's Corporation; (iii) commercial paper with a
maturity of 180 days or less issued by a corporation (other than an Affiliate
of ADT Limited) organized under the laws of any state of the United States of
America or the District of Columbia and rated "P-1" (or higher) according to
Moody's Investors Service, Inc. or "A-1" (or higher) according to Standard &
Poor's Corporation or at least an equivalent rating category of another
nationally recognized securities rating agency; and (iv) any money market
deposit accounts issued or offered by any commercial banking institution
described in clause (ii) above.

         "Change in Control" means an event as a result of which (i) any
"person" or "group" (as such terms are used in Sections 13(d) and 14(d) of the
Exchange Act), including the Laidlaw Group, is or becomes the direct or
indirect "beneficial owner" (as defined in Rule 13d-3 and 13d-5 under the
Exchange Act) of (A) if the Laidlaw Group beneficially owns more than 20% of
the outstanding Voting Stock of ADT Limited, more than 50% of such outstanding
Voting Stock and (B) if the Laidlaw Group beneficially owns 20% or less of the
outstanding Voting Stock of ADT Limited, more than 40% of such outstanding
Voting Stock, (ii) during any period of two consecutive years, individuals who
either (a) were members of the Board of Directors at the beginning of such
period or (b) whose election by the Board of Directors or whose nomination for
election by the shareholders of ADT Limited was approved by a vote of 66 2/3%
of the directors then still in office who were either directors at the
beginning of such period or whose election or nomination for election was
previously approved as provided for in this clause (b) cease for any reason
(including as a result of any proxy contest involving the solicitation of
revocable proxies under Section 14(a) of the Exchange Act) to constitute a
majority of the Board of Directors, (iii) the Company consolidates with or
merges with or into any other Person or all or substantially all of the
Company's assets are sold, conveyed, assigned, transferred, leased or
otherwise disposed of to any Person, or any corporation consolidates with or
merges with or into the Company (other than to, with or into a Wholly Owned
Restricted Subsidiary of ADT Limited), or (iv) ADT Limited consolidates or
amalgamates with or merges with or into any Person or all or substantially all
of ADT Limited's assets are sold, conveyed, assigned, leased or otherwise
disposed of to any Person, or any corporation consolidates with or merges with
or into ADT Limited, in any such event pursuant to a transaction in which the
outstanding Voting Stock of ADT Limited is changed into or exchanged for cash,
securities or other property, other than any such transaction (a) where the
outstanding Voting Stock of ADT Limited is not changed or exchanged at all
(except, with respect to any such transaction described above, to the extent
necessary to reflect a change in the jurisdiction of incorporation of ADT
Limited) or (b) where (A) the outstanding Voting Stock of ADT Limited is
changed into or exchanged for Voting Stock (other than Redeemable Capital
Stock) of the surviving corporation and (B) no "person" or "group" (as such
term is used in Sections 13(d) and 14(d) of the Exchange Act) is the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange
Act, except that a Person shall be deemed to have "beneficial ownership" of
all securities that such Person has the right to acquire, whether or not such
right is exercisable immediately or only after the passage of time)
immediately after such transaction, directly or indirectly, of more than 50%
of the total outstanding Voting Stock of the surviving corporation.

         "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934,
or, if at any time after the execution of this Indenture such Commission is
not existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties at such time.

         "Common Stock" means, with respect to any Person, any and all shares,
interests, participations and other equivalents (however designated, whether
voting or non-voting) of such Person's common stock, whether now outstanding
or issued after the date of this Indenture, and includes, without limitation,
all series and classes of such common stock.

         "Company" means the Person named as the "Company" in the first
paragraph of this Indenture, until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

         "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman, its President, any Vice
President, its Treasurer or an Assistant Treasurer, and delivered to the
Trustee.

         "Consolidated Net Worth" means the consolidated stockholders' equity
(excluding Redeemable Capital Stock) of a person and its consolidated
Subsidiaries (and in the case of ADT Limited, of ADT Limited and its
Restricted Subsidiaries), as determined in accordance with GAAP.

         "Corporate Trust Office" means the principal corporate trust office
of the Trustee, at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at Towermarc Plaza, 10161 Centurion Parkway, Jacksonville, FL
32256, except that with respect to presentation of Securities for payment or
for registration of transfer or exchange, such term shall mean the office or
agency of the Trustee at which, at any particular time, its corporate agency
business shall be conducted.

         "corporation" includes corporations, associations, companies and
business trusts.

         "Default" means any event which is, or after notice or passage of
time or both would be, an Event of Default.

         "Defaulted Interest" has the meaning specified in Section 307.

         "Designated Guarantor Senior Indebtedness" means (i) all Indebtedness
under the New Bank Credit Agreement, (ii) the Senior Notes and (iii) any other
Guarantor Senior Indebtedness that, at the time of determination, has an
aggregate principal amount outstanding of at least $50,000,000 and is
specifically designated in the instrument evidencing such Guarantor Senior
Indebtedness as "Designated Guarantor Senior Indebtedness".

         "Designated Senior Indebtedness" means (i) all Indebtedness under the
New Bank Credit Agreement, (ii) the Senior Notes and (iii) any other Senior
Indebtedness that, at the time of determination, has an aggregate principal
amount outstanding of at least $50,000,000 and is specifically designated in
the instrument evidencing such Senior Indebtedness as "Designated Senior
Indebtedness".

         "Dollar Equivalent" means, with respect to any amount of any currency
other than U.S. dollars, the equivalent amount of U.S. dollars determined by
using the arithmetic average of the quoted spot rates at which the principal
office or principal branch office of each of the Reference Banks in London
offers to provide such other currency in exchange for U.S. dollars in London
at 2:00 P.M. London time on the date as of which such Dollar Equivalent is to
be determined, provided that if one or more of the Reference Banks no longer
announces such quoted spot rates for such currency, then the Dollar Equivalent
shall be determined by using the arithmetic average of the quoted spot rates
or the quoted spot rate, as the case may be, of the other Reference Banks or
Bank, respectively.

         "Event of Default" has the meaning specified in Section 501 hereof.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Federal Bankruptcy Code" means Title 11 of the United States Code,
as amended from time to time.

         "Finance Canada Preferred Stock" means the Non-Voting Exchangeable
Shares, Series A, of ADT Finance Inc., a Canadian corporation (the "Series A
Shares"), and any publicly-held non-voting Preferred Stock issued by any
successor corporation of ADT Finance Inc. incorporated under the laws of
Canada ("Finance Canada") (i) in respect of which dividends are payable only
when a dividend is payable by ADT Limited in respect of its voting Common
Stock, (ii) that is convertible, exchangeable or redeemable only for voting
Common Stock of ADT Limited, (iii) that will entitle the holder thereof to
participate in any liquidation, dissolution or winding up of Finance Canada,
whether voluntary or involuntary, or any other distribution of assets of
Finance Canada among its stockholders for the purpose of winding up its
affairs, to no greater extent than the extent to which the holders of the
Series A Shares would currently so participate and (iv) the other terms of
which are not adverse in any material respect to the Holders of the Securities.

         "Generally Accepted Accounting Principles" or "GAAP" means generally
accepted accounting principles in the United States, consistently applied,
that are in effect on the date hereof.

         "Guaranteed Obligations" has the meaning specified in Section 1301
hereof.

         "Guaranteed Parties" means all the Persons who are now or who
hereafter become Holders and the Trustee.

         "Guarantees" means the guarantees of the Guarantor set forth in
Article Thirteen of this Indenture and more particularly means any guarantees
endorsed on any Securities delivered under this Indenture.

         "Guarantor" means the party named as a "Guarantor" in the first
paragraph of this Indenture, until a successor replaces any such Guarantor
pursuant to the applicable provisions hereof and, thereafter, shall mean such
successor; provided, however, that unless expressly provided for otherwise by
a supplemental indenture hereto, no Post-Merger Entity shall be a "Guarantor".

         "Guarantor Non-payment Default" means any event (other than a
Guarantor Payment Default) the occurrence of which entitles one or more
Persons to accelerate the maturity of any Designated Guarantor Senior
Indebtedness.

         "Guarantor Payment Default" means any default in the payment of
principal of (or premium, if any, on) or interest on, or any other amount due
in respect of, Designated Guarantor Senior Indebtedness beyond any applicable
grace period with respect thereto.

         "Guarantor Senior Indebtedness" means the principal of (and premium,
if any, on) and interest on (including interest accruing after the filing of a
petition initiating any proceeding pursuant to any bankruptcy law, whether or
not allowable as a claim in such proceeding) and other amounts due on or in
connection with any Indebtedness of any Guarantor, whether outstanding on the
date hereof or hereafter created, incurred or assumed, unless, in the case of
any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is  outstanding expressly provides that such
Indebtedness shall not be senior in right of payment to the Guarantees.
Without limiting the generality of the foregoing, "Guarantor Senior
Indebtedness" shall include the principal of (and premium, if any, on) and
interest (including interest accruing after the filing of a petition
initiating any proceeding pursuant to any bankruptcy law, whether or not
allowable as a claim in such proceeding) on all obligations of every nature of
any Guarantor to the Lenders under the New Bank Credit Agreement and to the
holders of the Senior Notes under the Senior Note Indenture, and any interest
rate or foreign exchange agreement now existing or hereinafter entered into by
any Guarantor with any Lender, including, without limitation, all fees,
expenses (including fees and expenses of counsel), claims, charges and
indemnity obligations.  Notwithstanding the foregoing, "Guarantor Senior
Indebtedness" shall not include (i) Indebtedness evidenced by the Guarantees,
(ii) Indebtedness of any Guarantor that is expressly subordinated in right of
payment to any of such Guarantor's Guarantees, (iii) Indebtedness of any
Guarantor that by operation of law is subordinate to any general unsecured
obligations of such Guarantor, (iv)  Indebtedness represented by Redeemable
Capital Stock, (v) Indebtedness of any Guarantor to ADT Limited or any of its
Subsidiaries, (vi) any liability for federal, state, local or other taxes owed
or owing by any Guarantor and (vii) trade payables owed or owing by any
Guarantor.

         "Holder" means a Person in whose name a Security is registered in the
Security Register.

         "Indebtedness" means (i) any liability of any Person (A) for borrowed
money, or under any reimbursement obligation relating to a letter of credit,
or (B) evidenced by a bond, note, debenture or similar instrument (including a
purchase money obligation) given in connection with the acquisition of any
businesses, properties or assets of any kind (other than a trade payable or a
current liability arising in the ordinary course of business), or (C) under
interest rate contracts and exchange rate contracts, or (D) for the payment of
money relating to a Capitalized Lease Obligation or (E) for all Redeemable
Capital Stock valued at the greater of its voluntary or involuntary
liquidation preference plus accrued and unpaid dividends; (ii) any liability
of others described in the preceding clause (i) that` such Person has
guaranteed or that is otherwise its legal liability; (iii) all Indebtedness
referred to in (but not excluded from) clauses (i) and (ii) above of other
Persons and all dividends of other Persons, the payment of which is secured by
(or for which the holder of such Indebtedness has an existing right,
contingent or otherwise, to be secured by) any Lien upon or in property
(including, without limitation, accounts and contract rights) owned by such
Person, even though such Person has not assumed or become liable for the
payment of such Indebtedness; and (iv) any amendment, supplement,
modification, deferral, renewal, extension or refunding of any liability of
the types referred to in clauses (i), (ii) and (iii) above.

         "Indenture" means this amended and restated indenture as originally
executed and as it may from time to time be supplemented or amended by one or
more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof.

         "Interest Payment Date" means the Stated Maturity of an installment
of interest on the Securities.

         "Investment" means any direct or indirect advance, loan (other than
advances to customers in the ordinary course of business, which are recorded
as accounts receivable on the balance sheet of the Company, ADT Limited and
the other Restricted Subsidiaries) or other extension of credit or capital
contribution to (by means of any transfer of cash or other property to others
or any payment for property or services for the account or use of others), or
any purchase or acquisition of Capital Stock, bonds, notes, debentures or
other securities issued by any other Person.

         "Laidlaw Group" means Laidlaw Inc., a Canadian corporation, and any
of its Affiliates or any "group" (as such term is used in Sections 13(d) and
14(d) of the Exchange Act) that includes Laidlaw Inc. or any of its Affiliates.

         "Lender" means the various financial institutions as are, or shall
from time to time become, parties to the New Bank Credit Agreement.

         "Lien" means any mortgage, charge, pledge, lien, security interest or
encumbrance of any kind.

         "Material Restricted Subsidiary" means any Restricted Subsidiary
whose total assets or consolidated revenues (or, where ADT Limited owns
directly or indirectly less than 100% of the equity share capital of such
Restricted Subsidiary, that part thereof attributable to ADT Limited's direct
or indirect interest therein) is equal to or greater than 5% of the total
assets or 5% of consolidated revenues, as the case may be, of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited; provided,
however, that a Material Restricted Subsidiary shall not include Insight Group
Limited, a United Kingdom corporation ("Insight"), for so long as Insight does
not conduct any business other than the travel services business and does not
account for more than 15% of the consolidated revenues of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited.

         "Maturity", when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes
due and payable as therein or herein provided, whether at the Stated Maturity,
purchase upon Change in Control or Redemption Date, and whether by declaration
of acceleration, Change in Control, call for redemption or purchase or
otherwise.

         "New Bank Credit Agreement" means, collectively, the Amended and
Restated Credit Agreement, dated as of April 14, 1997, among the Company, the
Lenders named therein, and The Bank of Nova Scotia, as Agent, together with
any related documents (including, without limitation, any guarantees or
security documents) as in effect on the date hereof and as such Agreement (and
such related documents) may be amended, restated, supplemented, renewed,
replaced or otherwise modified from time to time, including any agreement
extending the maturity of or refinancing or refunding all or any portion of
the Indebtedness or increasing the amount to be borrowed under such agreement
or any successor agreement, whether or not by or among the same parties;
provided that, for purposes of the definitions of "Designated Guarantor Senior
Indebtedness" and "Designated Senior Indebtedness" and the blockage provisions
described in Sections 1306 and 1403 hereof, (i) with respect to any agreement
providing for the refinancing, replacement or refunding of Indebtedness under
the New Bank Credit Agreement, such agreement shall be the New Bank Credit
Agreement under this Indenture only if a notice to that effect is delivered to
the Trustee, and (ii) notwithstanding that, as a result of any amendment,
restatement, supplement, renewal, replacement or other modification of the New
Bank Credit Agreement, the New Bank Credit Agreement is memorialized in more
than one instrument, there shall be deemed to be at any one time only one
instrument, together with any related documents (including, without
limitation, any guarantees or security documents), that is the New Bank Credit
Agreement under this Indenture.

         "Non-Guarantor" means all Restricted Subsidiaries of ADT Limited
other than the Company and the Guarantors.

         "Non-payment Default" means any event (other than a Payment Default)
the occurrence of which entitles one or more Persons to accelerate the
maturity of any Designated Senior Indebtedness.

         "Officers' Certificate" means a certificate signed by the Chairman,
the President or a Vice President, and by the Treasurer, an Assistant
Treasurer, the Secretary or an Assistant Secretary of the Company or ADT
Limited, as the case may be, and delivered to the Trustee.

         "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company, including an employee of the Company, and who shall
be acceptable to the Trustee.

         "Outstanding", when used with respect to the Securities, means, as of
the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except:

         (i)   Securities theretofore cancelled by the Trustee or delivered to
   the Trustee for cancellation;

         (ii)  Securities, or portions thereof, for whose payment or
   redemption money in the necessary amount has been theretofore deposited
   with the Trustee or any Paying Agent (other than the Company) in trust or
   set aside and segregated in trust by the Company (if the Company shall act
   as its own Paying Agent) for the Holders of such Securities; provided that,
   if such Securities are to be redeemed, notice of such redemption has been
   duly given pursuant to this Indenture or provision therefor satisfactory to
   the Trustee has been made;

         (iii) Securities, except to the extent provided in Sections 1202 and
   1203, with respect to which the Company has effected defeasance and/or
   covenant defeasance as provided in Article Twelve; and

         (iv)  Securities which have been paid pursuant to Section 306 or in
   exchange for or in lieu of which other Securities have been authenticated
   and delivered pursuant to this Indenture, other than any such Securities in
   respect of which there shall have been presented to the Trustee proof
   satisfactory to it that such Securities are held by a bona fide purchaser
   in whose hands the Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by TIA Section 313, Securities
owned by the Company or any Guarantor or any Affiliate of the Company or any
Guarantor shall be disregarded and deemed not to be Outstanding, except that,
in determining whether the Trustee shall be protected in making such
calculation or in relying upon any such request, demand, authorization,
direction, notice, consent or waiver, only Securities which the Trustee knows
to be so owned shall be so disregarded.  Securities so owned which have been
pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
Guarantor or any Affiliate of the Company or any Guarantor.

         "Paying Agent" means any Person (including the Company acting as
Paying Agent) authorized by the Company to pay the principal of (and premium,
if any, on) or interest on any Securities on behalf of the Company.

         "Payment Default" means any default in the payment of principal of
(or premium, if any, on) or interest on, or any other amount due in respect
of, Designated Senior Indebtedness beyond any applicable grace period with
respect thereto.

         "Person" means any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization
or government or any agency or political subdivision thereof.

         "Post-Merger Entity" means (i) any of Tyco and its Subsidiaries and
(ii) any other Subsidiary of ADT Limited created or acquired after the
consummation of the proposed merger between Tyco and Limited Apache, Inc., a
Wholly-Owned Subsidiary of ADT Limited and a Massachusetts corporation,
pursuant to the Agreement and Plan of Merger, dated as of March 17, 1997,
among Tyco, Limited Apache, Inc. and ADT Limited.

         "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that
evidenced by such particular Security; and, for the purposes of this
definition, any Security authenticated and delivered under Section 306 in
exchange for a mutilated security or in lieu of a lost, destroyed or stolen
Security shall be deemed to evidence the same debt as the mutilated, lost,
destroyed or stolen Security.

         "Preferred Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated,
whether voting or non-voting) of such Person's preferred or preference stock
whether now outstanding or issued after the date hereof, including, without
limitation, all classes and series of preferred or preference stock.

         "Redeemable Capital Stock" means any Capital Stock of the Company, ADT
Limited or any other Restricted Subsidiary that, either by its terms, by the
terms of any security into which it is convertible or exchangeable or
otherwise, (i) is or upon the happening of an event or passage of time would
be required to be redeemed (for consideration other than shares of the common
equity capital of ADT Limited) on or prior to the final Stated Maturity of the
Securities, (ii) is redeemable at the option of the holder thereof (for
consideration other than shares of the  common equity capital of ADT Limited)
at any time prior to such final Stated Maturity, or (iii) is convertible into
or exchangeable for debt securities at any time prior to such final Stated
Maturity.

         "Redemption Date", when used with respect to any Security to be
redeemed, in whole or in part, means the date fixed for such redemption by or
pursuant to this Indenture.

         "Redemption Price", when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

         "Reference Banks" means each of The Chase Manhattan Bank, The Bank of
Nova Scotia and Midland Bank plc.

         "Regular Record Date" for the interest payable on any Interest
Payment Date means the January 15 or July 15  (whether or not a Business Day),
as the case may be, next preceding such Interest Payment Date.

         "Responsible Officer", when used with respect to the Trustee, means
the chairman or any vice-chairman of the board of directors, the chairman or
any vice-chairman of the executive committee of the board of directors, the
chairman of the trust committee, the president, any vice president, the
secretary, any assistant secretary, the treasurer, any assistant treasurer,
the cashier, any assistant cashier, any trust officer or assistant trust
officer, the controller or any assistant controller or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above-designated officers, and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred
because of his knowledge of and familiarity with the particular subject.

         "Restricted Subsidiary" means any Subsidiary of ADT Limited,
including, without limitation, the Company, other than an Unrestricted
Subsidiary.

         "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

         "Senior Indebtedness" means the principal of (and premium, if any,
on) and interest on (including interest accruing after the filing of a
petition initiating any proceeding pursuant to any bankruptcy law, whether or
not allowable as a claim in such proceeding) and other amounts due on or in
connection with, any Indebtedness of the Company, whether outstanding on the
date hereof or hereafter created, incurred or assumed, unless, in the case of
any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is outstanding expressly provides that such
Indebtedness shall not be senior in right of payment to the Securities.
Without limiting the generality of the foregoing, "Senior Indebtedness" shall
include the principal of (and premium, if any, on) and interest on (including
interest accruing after the filing of a petition initiating any proceeding
pursuant to any bankruptcy law, whether or not allowable as a claim in such
proceeding) all obligations of every nature of the Company from time to time
owed to the Lenders under the New Bank Credit Agreement and to the holders of
the Senior Notes under the Senior Note Indenture, and any interest rate or
foreign exchange agreement now existing or hereinafter entered into by the
Company with any Lender, including, without limitation, all fees, expenses
(including fees and expenses of counsel), claims, charges and indemnity
obligations.  Notwithstanding the foregoing, "Senior Indebtedness" shall not
include (i) Indebtedness evidenced by the Securities, (ii) Indebtedness of the
Company that is expressly subordinated in right of payment to any Indebtedness
of the Company or the Securities, (iii) Indebtedness of the Company that by
operation of law is subordinate to any general unsecured obligations of the
Company, (iv) Indebtedness represented by Redeemable Capital Stock, (v)
Indebtedness of the Company to ADT Limited or any of its Subsidiaries, (vi)
any liability for federal, state, local or other taxes owed or owing by the
Company and (vii) trade account payables owed or owing by the Company.

         "Senior Note Indenture" means the indenture dated as of August 4,
1993, as amended, among the Company, as issuer, ADT Limited, ADT General
Holdings, Inc., ADT Security Services, Inc., ADT Security Systems, West, Inc.,
ADT Automotive Holdings, Inc., ADT Automotive, Inc., AA Property Holdings,
Inc., ADT Investments, Inc., AAAA Dealers Services Inc., ADT Business
Holdings, Inc., ADT Property Holdings, Inc., ADT Security Systems,
Manufacturing, Inc., Mid-Atlantic Security, Inc., ADT Automotive Services,
Inc., British Car Auctions Inc., CCTC International, Inc. and Flying Lion
Inc., each (other than ADT Limited) a Delaware corporation, Auction Transport
Inc., a Missouri corporation, ADT Specialty Auctions, Inc., a Michigan
corporation, and Tri-City Auto Auction, Inc., a Washington corporation, as
guarantors, and The Chase Manhattan Bank, as trustee, relating to the Company's
8-1/4% Senior Notes due 2000, as such indenture may be amended or supplemented
from time to time by one or more indentures supplemental thereto entered into
pursuant to the applicable provisions thereof.

         "Senior Notes" means the 8-1/4% Senior Notes due 2000 of the Company
issued pursuant to the Senior Note Indenture.

         "Special Record Date" for the payment of any Defaulted Interest means
a date fixed by the Trustee pursuant to Section 307.

         "Stated Maturity", when used with respect to any Indebtedness or any
installment of principal thereof or interest thereon, means the date specified
in such Indebtedness as the fixed date on which the principal of such
Indebtedness or such installment of principal or interest is due and payable.

         "Subordinated Indebtedness" means Indebtedness of any Person that by
its terms is subordinated in right of payment to other Indebtedness of such
Person and shall be deemed to include Redeemable Capital Stock.

         "Subsidiary" means with respect to any Person, a corporation of
which, at the time of determination, such Person, directly or indirectly
through one or more Subsidiaries, owns more than 50% of the Voting Stock.

         "Subsidiary Guarantor" means any Guarantor that is a Restricted
Subsidiary, other than a Restricted Subsidiary that is a direct or indirect
parent of the Company.

         "Surviving Entity" has the meaning specified in Section 801 hereof.

         "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939,
as amended, as in force at the date as of which this Indenture was executed,
except as provided in Section 905.

         "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

         "Tyco" means Tyco International Limited, a Massachusetts corporation.

         "Unrestricted Subsidiary" means (a) any Post-Merger Entity and (b)
any Subsidiary of ADT Limited that at the time of determination shall be
designated an Unrestricted Subsidiary by the Board of Directors in the manner
provided below and (c) any Subsidiary of an Unrestricted Subsidiary.  The
Board of Directors may designate (b) any Subsidiary of ADT Limited (including
any newly acquired or newly formed subsidiary) to be an Unrestricted
Subsidiary if such Subsidiary of ADT Limited is a Subsidiary (a)  no portion
of the Indebtedness or any other obligation (contingent or otherwise) of which
(i) is guaranteed by the Company, ADT Limited or any other Restricted
Subsidiary, (ii) is recourse to or obligates the Company, ADT Limited or any
other Restricted Subsidiary in any way or (iii) subjects any property or asset
of the Company, ADT Limited or any other Restricted Subsidiary, directly or
indirectly, contingently or otherwise, to satisfaction thereof, (b) which has
no Indebtedness or any other obligation that, if in default in any respect
(including a non-payment default), would permit (upon notice, lapse of time or
both) any holder of any other Indebtedness of the Company, ADT Limited or any
other Restricted Subsidiary to declare a default on such other Indebtedness or
cause the payment thereof to be accelerated or payable prior to its Stated
Maturity, (c) with which the Company, ADT Limited or any other Restricted
Subsidiary has no contract, agreement, arrangement, understanding or
obligation of any kind, whether written or oral, other than a transaction on
terms no less favorable to the Company, ADT Limited or any other Restricted
Subsidiary than those that might be obtained at the time from Persons who are
not Affiliates of the Company or ADT Limited, and (d) with which neither the
Company, ADT Limited nor any other Restricted Subsidiary has any obligation
(i) to subscribe for additional shares of Capital Stock, or other equity
interest therein, or (ii) to maintain or preserve such Restricted Subsidiary's
financial condition or to cause such Restricted Subsidiary to achieve certain
levels of operating results; provided, however, that in no event shall any
Guarantor be deemed an Unrestricted Subsidiary.  The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided
that immediately after giving effect to such designation (A) any Indebtedness
or Liens of such Unrestricted Subsidiary would be permitted to be incurred by
such Restricted Subsidiary under this Indenture and (B) no Default or Event of
Default shall have occurred and be continuing.  Any such designation by the
Board of Directors shall be evidenced to the Trustees by promptly filing with
each of the Trustees a copy of the Board Resolution giving effect to such
designation and an Officers' Certificate certifying that such designation
complied with the foregoing provisions.  A designation of an Unrestricted
Subsidiary as a Restricted Subsidiary may not thereafter be rescinded.

         "U.S. Government Obligations" means securities that are (i) direct
obligations of the United States of America for the timely payment of which
its full faith and credit is pledged or (ii) obligations of a Person
controlled or supervised by and acting as an agency or instrumentality of the
United States of America the timely payment of which is unconditionally
guaranteed as a full faith and credit obligation by the United States of
America, which, in either case, are not callable or redeemable at the
option of the issuer thereof, and shall also include a depository receipt
issued by a bank (as defined in Section 3(a)(2) of the Securities Act of
1933, as amended), as custodian with respect to any such U.S.  Government
Obligation or a specific payment of principal of or interest on any such
U.S.  Government Obligation held by such custodian for the account of the
holder of such depository receipt; provided that (except as required by
law) such custodian is not authorized to make any deduction from the amount
payable to the holder of such depository receipt from any amount received
by the custodian in respect of the U.S.  Government Obligation or the
specific payment of principal of or interest on the U.S.  Government
Obligation evidenced by such depository receipt.

         "Vice President", when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president".

         "Voting Stock" means stock of the class or classes pursuant to which
the holders thereof have the general voting power under ordinary circumstances
to elect at least a majority of the board of directors, managers or trustees
of a corporation (irrespective of whether or not at the time stock of any
other class or classes shall have or might have voting power by reason of the
happening of any contingency).

         "Wholly Owned Restricted Subsidiary" means (i) a Subsidiary all the
Capital Stock (other than directors' qualifying shares that are required under
applicable law) of which is owned by ADT Limited or another Wholly Owned
Restricted Subsidiary of ADT Limited and (ii) ADT Finance Inc., a Canadian
corporation, if and only if and for so long as, the Capital Stock of ADT
Finance Inc. consists entirely of Voting Stock, 100% of which is owned
directly or indirectly by ADT Limited, and Non-Voting Exchangeable Shares,
Series A, or any successor corporation of ADT Finance Inc. incorporated under
the laws of Canada, provided that the Capital Stock of such successor shall
consist entirely of Voting Stock, 100% of which is owned directly or
indirectly by ADT Limited, and Finance Canada Preferred Stock.

         SECTION 102.   Compliance Certificates and Opinions.

         Upon any application or request by the Company or ADT Limited, on its
own behalf or on behalf of any Guarantor, to the Trustee to take any action
under any provision of this Indenture, the Company or ADT Limited, as the case
may be, shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent, if any, provided for in this Indenture (including any
covenant compliance with which constitutes a condition precedent) relating to
the proposed action have been complied with and an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any,
have been complied with, except that in the case of any such application or
request as to which the furnishing of such documents is specifically required
by any provision of this Indenture relating to such particular application or
request, no additional certificate or opinion need be furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1008(a)) shall include:

         (1)   a statement that each Person signing such certificate or
   opinion has read such covenant or condition and the definitions herein
   relating thereto;

         (2)   a brief statement as to the nature and scope of the examination
   or investigation upon which the statements or opinions contained in such
   certificate or opinion are based;

         (3)   a statement that, in the opinion of each such Person, he has
   made such examination or investigation as is necessary to enable him to
   express an informed opinion as to whether or not such covenant or condition
   has been complied with; and

         (4)   a statement as to whether, in the opinion of each such Person,
   such condition or covenant has been complied with.

         SECTION 103.   Form of Documents Delivered to Trustee.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion  with respect to some matters and
one or more other such Persons as to other matters, and any such Person may
certify or give an opinion as to such matters in one or several documents.

         Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which his
certificate or opinion is based are erroneous.  Any such certificate or
Opinion of Counsel may be based, insofar as it relates to factual matters,
upon a certificate or opinion of, or representations by, an officer or
officers of the Company or such Guarantor stating that the information with
respect to such factual matters is in the possession of the Company or such
Guarantor, unless such counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect
to such matters are erroneous.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

         SECTION 104.   Acts of Holders.

         (a)   Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agents duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the
Company or any Guarantor.  Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as
the "Act" of the Holders signing such instrument or instruments.  Proof of
execution of any such instrument or of a writing appointing any such agent
shall be sufficient for any purpose of this Indenture and conclusive in favor
of the Trustee, the Company and each Guarantor, if made in the manner provided
in this Section.

         (b)   The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate  of a notary public or other officer authorized
by law to take acknowledgments of deeds, certifying that the individual
signing such instrument or writing acknowledged to him the execution thereof.
Where such execution is by a signer acting in a capacity other than his
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of authority.  The fact and date of the execution of any such
instrument or writing, or the authority of the Person executing the same, may
also be proved in any other manner which the Trustee deems sufficient.

         (c)   The principal amount and serial numbers of Securities held by
any Person, and the date of holding the same, shall be proved by the Security
Register.

         (d)   If the Company shall solicit from the Holders of Securities any
request, demand, authorization, direction, notice, consent, waiver or other
Act, the Company may, at its option, by or pursuant to Board Resolution, fix
in advance a record date for the determination of Holders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or
other Act, but the Company shall have no obligation to do so.  Notwithstanding
TIA Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in
connection therewith and not later than the date such solicitation is
completed.  If such a record date is fixed, such request, demand,
authorization, direction, notice, consent, waiver or other Act may be given
before or after such record date, but only the Holders of record at the close
of business on such record date shall be deemed to be Holders for the purposes
of determining whether Holders of the requisite proportion of Outstanding
Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that
purpose the Outstanding Securities shall be computed as of such record date;
provided that no such authorization, agreement or consent by the Holders on
such record date shall be deemed effective unless it shall become effective
pursuant to the provisions of this Indenture not later than 11 months after
the record date.

         (e)   Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future
Holder of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee, the
Company or any Guarantor in reliance thereon, whether or not notation of such
action is made upon such Security.

         SECTION 105.   Notices, etc., to Trustee, Company, Guarantors and
Agent.

         Any request, demand, authorization, direction, notice, consent,
waiver or Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

         (1)   the Trustee by any Holder or by the Company or any Guarantor
   shall be sufficient for every purpose hereunder if made, given, furnished
   or filed in writing to or with the Trustee at its Corporate Trust Office,
   Attention:  Corporate Trust Administration,

         (2)   the Company or any Guarantor by the Trustee or by any Holder
   shall be sufficient for every purpose hereunder (unless otherwise herein
   expressly provided) if in writing and mailed, first-class postage prepaid,
   to the Company or such Guarantor addressed to the Company or such Guarantor
   at the address of the Company's principal office specified in the first
   paragraph of this Indenture, or at any other address previously furnished
   in writing to the Trustee by the Company or such Guarantor, or

         (3)   the Agent by the Company, any Guarantor, the Trustee or any
   Holder shall be sufficient for any purpose hereunder if made, given,
   furnished or delivered, in writing to or with the Agent addressed to it c/o
   The Bank of Nova Scotia, Atlanta Agency, Suite 2700, 600 Peachtree Street
   N.E., Atlanta, Georgia 30308, Attention:  ADT Operations Account Officer,
   or at any other address previously furnished in writing to the Company and
   the Trustee by the Agent.

         SECTION 106.   Notice to Holders; Waiver.

         Where this Indenture provides for notice of any event to Holders by
the Company, any Guarantor or the Trustee, such notice shall be sufficiently
given (unless otherwise herein expressly provided) if in writing and mailed,
first-class postage prepaid, to each Holder affected by such event, at his
address as it appears in the Security Register, not later than the latest
date, and not earlier than the earliest date, prescribed for the giving of
such notice.  In any case where notice to Holders is given by mail, neither
the failure to mail such notice, nor any defect in any notice so mailed, to
any particular Holder shall affect the sufficiency of such notice with respect
to other Holders.  Any notice mailed to a Holder in the manner herein
prescribed shall be conclusively deemed to have been received by such Holder,
whether or not such Holder actually receives such notice.  Where this
Indenture provides for notice in any manner, such notice may be waived in
writing by the Person entitled to receive such notice, either before or after
the event, and such waiver shall be the equivalent of such notice.  Waivers of
notice by Holders shall be filed with the Trustee, but such filing shall not
be a condition precedent to the validity of any action taken in reliance upon
such waiver.

         In case by reason of the suspension of or irregularities in regular
mail service or by reason of any other cause, it shall be impracticable to
mail notice of any event to Holders when such notice is required to be given
pursuant to any provision of this Indenture, then any manner of giving such
notice as shall be satisfactory to the Trustee shall be deemed to be a
sufficient giving of such notice for every purpose hereunder.

         SECTION 107.   Effect of Headings and Table of Contents.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

         SECTION 108.   Successors and Assigns.

         All covenants and agreements in this Indenture by the Company and the
Guarantors shall bind their respective successors and assigns, whether so
expressed or not.

         SECTION 109.   Separability Clause.

         In case any provision in this Indenture or in the Securities or the
Guarantees shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

         SECTION 110.   Benefits of Indenture.

         Nothing in this Indenture, the Securities or the Guarantees, express
or implied, shall give to any Person, other than the parties hereto, any
Paying Agent, any Security Registrar and their successors hereunder, the
Holders and, with respect to any provisions hereof relating to the
subordination of the Securities or the rights of holders of Senior
Indebtedness or Guarantor Senior Indebtedness, the holders of Senior
Indebtedness or Guarantor Senior Indebtedness, any benefit or any legal or
equitable right, remedy or claim under this Indenture.

         SECTION 111.   Governing Law.

         This Indenture, the Securities and the Guarantees shall be governed
by and construed in accordance with the law of the State of New York.  This
Indenture is subject to the provisions of the Trust Indenture Act that are
required to be part of this Indenture and shall, to the extent applicable, be
governed by such provisions.

         SECTION 112.   Legal Holidays.

         In any case where any Interest Payment Date, Redemption Date, or
Stated Maturity or Maturity of any Security shall not be a Business Day, then
(notwithstanding any other provision of this Indenture, the Securities or the
Guarantees) payment of interest or principal (and premium, if any) need not be
made on such date, but may be made on the next succeeding Business Day with
the same force and effect as if made on the Interest Payment Date, Redemption
Date, or at the Stated Maturity or Maturity; provided that no interest shall
accrue for the period from and after such Interest Payment Date, Redemption
Date, Stated Maturity or Maturity, as the case may be.

         SECTION 113.   No Recourse Against Others.

         A director, officer, employee or stockholder, as such, of the Company
or any Guarantor shall not have any liability for any obligations of the
Company or such Guarantor, as the case may be, under the Securities, this
Indenture or the Guarantees or for any claim based on, in respect of or by
reason of such obligations or their creation.  Each Holder by accepting any of
the Securities waives and releases all such liability.

         SECTION 114.   Submission to Jurisdiction.

         The Company and each Guarantor irrevocably agree that any suit,
action or proceeding against the Company or any Guarantor arising out of or
based upon this Indenture, the Securities, the Guarantees or the public
offering of the Securities may be instituted in any state or federal court in
the Borough of Manhattan, The City of New York, New York, and irrevocably
waive, to the extent they may lawfully do so, any objection which they may now
or hereafter have to the laying of venue of any such suit, action or
proceeding, and irrevocably submit to the nonexclusive jurisdiction of such
courts in any suit, action or proceeding.  The Company and each Guarantor
hereby irrevocably appoint ADT, Inc., 1750 Clint Moore Road, P.O. Box 5035,
Boca Raton, Florida 33431, as their Authorized Agent (the "Authorized Agent")
upon whom process may be served in any suit, action or proceeding arising out
of or based on this Indenture, the Securities, the Guarantees or the public
offering of the Securities which may be instituted in any state or federal
court in the Borough of Manhattan, The City of New York, New York, and the
Company and each Guarantor expressly consent to the jurisdiction of any such
court in respect of any such suit, action or proceeding, and waive any other
requirements of or objections to personal jurisdiction with respect thereto.
The Company and each Guarantor represent and warrant that the Authorized Agent
has agreed to act as said agent for service of process, and the Company and
each Guarantor agree to take any and all action, including the filing of any
and all documents and instruments, that may be necessary to continue such
appointment in full force and effect as aforesaid.  Service of process upon
the Authorized Agent and written notice of such service to the Company or any
Guarantor shall be deemed, in every respect, effective service of process upon
the Company or such Guarantor.  The foregoing does not limit any right of the
Trustee or any Holder of a Security to institute any suit, action or
proceeding in any other court of competent jurisdiction.


                                  ARTICLE TWO

                                SECURITY FORMS

         SECTION 201.   Forms Generally.

         The Securities, the Guarantees and the Trustee's certificate of
authentication shall be in substantially the forms set forth in this Article,
with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or as may, consistently herewith, be determined by the
officers executing such Securities or Guarantees, as evidenced by their
execution of the Securities or Guarantees.  Any portion of the text of any
Security or Guarantee may be set forth on the reverse thereof, with an
appropriate reference thereto on the face of the Security or Guarantee.

         The definitive Securities and Guarantees shall be printed,
lithographed or engraved on steel-engraved borders or may be produced in any
other manner, all as determined by the officers of the Company executing such
Securities, as evidenced by their execution of such Securities.

         SECTION 202.   Form of Face of Security.

                             ADT OPERATIONS, INC.

                   9-1/4% Senior Subordinated Note due 2003

No.__________                                                  $__________


         ADT Operations, Inc., a Delaware corporation (herein called the
"Company", which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
___________ or registered assigns, the principal sum of ___________ Dollars
on August 1, 2003 at the office or agency of the Company referred to below,
and to pay interest thereon on February 1, 1994 and semi-annually thereafter,
on February 1 and August 1 in each year, from August 4, 1993, or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for, at the rate of 9-1/4% per annum, until the principal hereof is paid or
duly provided for, and (to the extent lawful) to pay on demand interest on any
overdue interest at the rate borne by the Securities from the date on which
such overdue interest becomes payable to the date payment of such interest has
been made or duly provided for.  The interest so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest, which shall be the January 15 or July 15
(whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date.  Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date, and such defaulted interest, and (to the extent lawful) interest
on such defaulted interest at the rate borne by the Securities, may be paid to
the Person in whose name this Security (or one or more Predecessor Securities)
is registered at the close of business on a Special Record Date for the
payment of such Defaulted Interest to be fixed by the Trustee, notice whereof
shall be given to Holders of Securities not less than 10 days prior to such
Special Record Date, or may be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities may be listed, and upon such notice as may be required by such
exchange, all as more fully provided in said Indenture.  Payment of the
principal of (and premium, if any, on) and interest on this Security will be
made at the office or agency of the Company maintained for that purpose in The
City of Atlanta, or at such other office or agency of the Company as may be
maintained for such purpose, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that payment of interest may be made at the
option of the Company (i) by check mailed to the address of the Person
entitled thereto as such address shall appear on the Security Register or
(ii) by transfer to an account maintained by the payee located in the
United States.

         Reference is hereby made to the further provisions of this
Security set forth on the reverse hereof, which further provisions shall
for all purposes have the same effect as if set forth at this place.  This
Security is entitled to the benefits of the Guarantees issued by each
Guarantor of the punctual payment when due of the Guaranteed Obligations
made in favor of the Trustee for the benefit of the Holder.  Reference is
hereby made to Article Thirteen of the Indenture for a statement of the
respective rights, limitations of rights, duties and obligations under the
Guarantees of the Guarantors, the Trustee and the Holders.

         Unless the certificate of authentication hereon has been duly
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be entitled to any benefit under the Indenture, or be
valid or obligatory for any purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

          Dated:                                ADT OPERATIONS, INC.


          [SEAL]                                By________________________

Attest:

_____________________________
     Authorized Signature

         SECTION 203.   Form of Reverse of Security.

         This Security is one of a duly authorized issue of securities of the
Company designated as its 9-1/4% Senior Subordinated Notes due 2003 (herein
called the "Securities"), limited (except as otherwise provided in the
Indenture referred to below) in aggregate principal amount to $350,000,000,
which may be issued under an indenture dated as of August 4, 1993 between the
Company, as issuer, ADT Limited, as guarantor, and The Bank of New York, as
trustee (herein called the "Trustee", which term includes any successor
trustee under the Indenture), as amended and restated as of _______, 1997
(herein called the "Indenture") to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties, obligations and immunities
thereunder of the Company, the Guarantors, the Trustee and the Holders of the
Securities, and of the terms upon which the Securities are, and are to be,
authenticated and delivered.

         The indebtedness evidenced by the Securities is, to the extent and in
the manner provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of all Senior Indebtedness as defined in
the Indenture, and this Security is issued subject to such provisions.  The
indebtedness evidenced by the Guarantees endorsed on the Securities is, to the
extent and in the manner provided in the Indenture, subordinate and subject in
right of payment to the prior payment in full of all Guarantor Senior
Indebtedness as defined in the Indenture, and the Guarantee endorsed on
this Security is issued subject to such provisions.  Each Holder of this
Security, by accepting the same, (a) agrees to and shall be bound by such
provisions, (b) authorizes and directs the Trustee on his behalf to take
such action as may be necessary or appropriate to effectuate the
subordination as provided in the Indenture and (c) appoints the Trustee his
attorney-in-fact for such purpose.

         The Securities are subject to redemption upon not less than 30 nor
more than 60 days' notice, at any time after August 1, 1998, as a whole or in
part, at the election of the Company, at a Redemption Price equal to the
percentage of the principal amount set forth below if redeemed during the
12-month period beginning August 1, of the years indicated:

                   Redemption
                      Year                       Price
                   ----------                    -----

                      1998                      103.75%
                      1999                      102.50%
                      2000                      101.25%


and thereafter at 100% of the principal amount, together in the case of any
such redemption with accrued interest, if any, to the Redemption Date, all as
provided in the Indenture.

         Upon the occurrence of a Change in Control, the Holder of this
Security may require the Company, subject to certain limitations provided in
the Indenture, to repurchase this Security at a purchase price in cash in an
amount equal to 101% of the principal amount thereof plus accrued and unpaid
interest.

         In the case of any redemption of Securities, interest installments
whose Stated Maturity is on or prior to the Redemption Date will be payable to
the Holders of such Securities, or one or more Predecessor Securities, of
record at the close of business on the relevant Record Date referred to on the
face hereof.  Securities (or portions thereof) for whose redemption and
payment provision is made in accordance with the Indenture shall cease to bear
interest from and after the Redemption Date.

         In the event of redemption of this Security in part only, a new
Security or Securities for the unredeemed portion hereof shall be issued in
the name of the Holder hereof upon the cancellation hereof.

         If an Event of Default shall occur and be continuing, the principal
of all the Securities may be declared due and payable in the manner and with
the effect provided in the Indenture.

         The Indenture contains provisions for defeasance at any time of (a)
the entire indebtedness of the Company on this Security and (b) certain
restrictive covenants and the related Defaults and Events of Default, upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

         The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of
the Company and the Guarantors and the rights of the Holders under the
Indenture at any time by the Company, the Guarantors and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Securities at the time Outstanding.  The Indenture also contains provisions
permitting the Holders of specified percentages in aggregate principal amount
of the Securities at the time Outstanding, on behalf of the Holders of all the
Securities, to waive compliance by the Company and the Guarantors with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences.  Any such consent or waiver by or on behalf of the Holder
of this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof
whether or not notation of such consent or waiver is made upon this Security.

         No reference herein to the Indenture and no provision of this
Security, the Guarantee endorsed hereon or the Indenture shall alter or impair
the obligation of the Company or any Guarantor (in the event any Guarantor is
obligated to make payments in respect of the Securities), which is absolute
and unconditional, to pay the principal of (and premium, if any, on) and
interest on this Security at the times, place, and rate, and in the coin or
currency, herein prescribed.

         As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registerable on the
Security Register of the Company, upon surrender of this Security for
registration of transfer at the office or agency of the Company maintained for
such purpose in The City of New York, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate principal amount, will be issued to
the designated transferee or transferees.

         The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof.  As provided in the
Indenture and subject to certain limitations therein set forth, the Securities
are exchangeable for a like aggregate principal amount of Securities of a
different authorized denomination, as requested by the Holder surrendering the
same.

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith.

         Prior to the time of due presentment of this Security for
registration of transfer, the Company, the Guarantors, the Trustee and any
agent of the Company, the Guarantors or the Trustee may treat the Person in
whose name this Security is registered as the owner hereof for all purposes,
whether or not this Security be overdue, and neither the Company, the
Guarantors, the Trustee nor any agent shall be affected by notice to the
contrary.

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

         SECTION 204.   Form of Trustee's Certificate of Authentication.

         The Trustee's certificate of authentication shall be in substantially
the following form:

                   TRUSTEE'S CERTIFICATE OF AUTHENTICATION.

         This is one of the Securities referred to in the within-mentioned
Indenture.

Dated:                           THE BANK OF NEW YORK,
                                    as Trustee

                                 By__________________________
                                     Authorized Officer

         SECTION 205.   Form of Guarantee.

         The form of Guarantee shall be set forth on the Securities
substantially as follows:

                                   GUARANTEE

         For value received, [each of] the undersigned hereby irrevocably and
unconditionally guarantees, [jointly and severally,] on a senior subordinated
basis to the Holder of this Security and to the Trustee, on behalf of the
Holder, (i) the due and punctual payment of the principal of and interest on
this Security, when and as the same shall become due and payable, whether at
Stated Maturity, purchase upon Change in Control or Redemption Date, and
whether by declaration of acceleration, Change in Control, call for redemption
or purchase or otherwise, the due and punctual payment of interest on the
overdue principal of and interest, if any, on this Security, to the extent
lawful, and the due and punctual performance of all other obligations of the
Company to the Holder of this Security or the Trustee all in accordance with
the terms of this Security and the Indenture and (ii) in the case of any
extension of time of payment or renewal of this Security or any of such other
obligations, that the same will be promptly paid in full when due or performed
in accordance with the terms of the extension or renewal, at Stated Maturity,
purchase upon Change in Control or Redemption Date, and whether by declaration
of acceleration, Change in Control, call for redemption or purchase or
otherwise (the obligations in clauses (i) and (ii) hereof being the
"Guaranteed Obligations").  This Guarantee will not be valid or obligatory for
any purpose until the Trustee duly executes the certificate of authentication
on the Security upon which this Guarantee is endorsed.

Dated:

[SEAL]                                    ADT LIMITED,
                                            a Bermuda company


Attest:____________________               By____________________
       Authorized Signature


[SEAL]                                    [LIST ADDITIONAL GUARANTORS
                                              AND JURISDICTIONS OF
                                              INCORPORATION]


Attest:____________________                By____________________
       Authorized Signature


                                 ARTICLE THREE

                                THE SECURITIES

         SECTION 301.   Title and Terms.

         The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is limited to $350,000,000,
except for Securities authenticated and delivered upon registration of
transfer of, or in exchange for, or in lieu of, other Securities pursuant to
Section 304, 305, 306, 906, 1010 or 1108.

         The Securities shall be known and designated as the "9-1/4% Senior
Subordinated Notes due 2003" of the Company.  Their Stated Maturity shall be
August 1, 2003, and they shall bear interest at the rate of 9-1/4% per annum
from August 4, 1993, or from the most recent Interest Payment Date to which
interest has been paid or duly provided for, payable on February 1, 1994 and
semi-annually thereafter on February 1 and August 1 in each year and at said
Stated Maturity, until the principal thereof is paid or duly provided for.

         The principal of (and premium, if any, on) and interest on the
Securities shall be payable at the office or agency of the Company maintained
for such purpose in The City of Atlanta, or at such other office or agency of
the Company as may be maintained for such purpose; provided, however, that, at
the option of the Company, interest may be paid by check mailed to addresses
of the Persons entitled thereto as such addresses shall appear on the Security
Register.

         The Securities shall be redeemable as provided in Article Eleven.

         The Securities shall be subordinated in right of payment to Senior
Indebtedness as provided in Article Fourteen.

         SECTION 302.   Denominations.

         The Securities shall be issuable only in registered form without
coupons and only in denominations of $1,000 and any integral multiple thereof.

         SECTION 303.   Execution, Authentication, Delivery and Dating.

         The Securities shall be executed on behalf of the Company by its
Chairman, its President or a Vice President, under its corporate seal
reproduced thereon and attested by its Secretary or an Assistant Secretary.
The signature of any of these officers on the Securities may be manual or
facsimile signatures of the present or any future such authorized officer and
may be imprinted or otherwise reproduced on the Securities.

         Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the
Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities
or did not hold such offices at the date of such Securities.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities executed by the Company to
the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Securities.

         Each Security shall be dated the date of its authentication.

         No Security shall be entitled to any benefit under this Indenture or
be valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
duly executed by the Trustee by manual signature of an authorized officer, and
such certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder and is entitled to the benefits of this Indenture.

         In case the Company or any Guarantor, pursuant to Article Eight,
shall be consolidated, amalgamated or merged with or into any other Person or
shall be continued or redomesticated under the laws of a jurisdiction other
than Bermuda or shall convey, transfer, lease or otherwise dispose of all or
substantially all of its properties and assets to any Person, and the
successor Person resulting from such consolidation or amalgamation, or
surviving such merger, continuance or redomestication, or into which the
Company or such Guarantor shall have been merged, or the Person which shall
have received a conveyance, transfer, lease or other disposition as aforesaid,
shall have executed an indenture supplemental hereto with the Trustee pursuant
to Article Eight, any of the Securities authenticated or delivered prior to
such consolidation, amalgamation, merger, continuance, redomestication,
conveyance, transfer, lease or other disposition may, from time to time, at
the request of the successor Person, be exchanged for other Securities
executed in the name of the successor Person with such changes in phraseology
and form as may be appropriate, but otherwise in substance of like tenor as the
Securities surrendered for such exchange and of like principal amount; and the
Trustee, upon Company Request of the successor Person, shall authenticate and
deliver Securities as specified in such request for the purpose of such
exchange.  If Securities shall at any time be authenticated and delivered in
any new name of a successor Person pursuant to this Section in exchange or
substitution for or upon registration of transfer of any Securities, such
successor Person, at the option of the Holders but without expense to them,
shall provide for the exchange of all Securities at the time Outstanding for
Securities authenticated and delivered in such new name.

         SECTION 304.   Temporary Securities.

         Pending the preparation of definitive Securities, the Company may
execute, the Guarantors may endorse Guarantees on, and upon Company Order the
Trustee shall authenticate and deliver temporary Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive
Securities in lieu of which they are issued and with such appropriate
insertions, omissions, substitutions and other variations as the officers
executing such Securities may determine, as conclusively evidenced by their
execution of such Securities.

         If temporary Securities are issued, the Company will cause definitive
Securities to be prepared without unreasonable delay.  After the preparation
of definitive Securities, the temporary Securities shall be exchangeable for
definitive Securities upon surrender of the temporary Securities at the office
or agency of the Company designated for such purpose pursuant to Section 1002,
without charge to the Holder.  Upon surrender for cancellation of any one or
more temporary Securities, the Company shall execute, the Guarantors shall
endorse Guarantees on, and the Trustee shall authenticate and deliver in
exchange therefor a like principal amount of definitive Securities of
authorized denominations.  Until so exchanged, the temporary Securities shall
in all respects be entitled to the same benefits under this Indenture as
definitive Securities.

         SECTION 305.   Registration, Registration of Transfer and Exchange.

         The Company shall cause to be kept at the Corporate Trust Office of
the Trustee a register (the register maintained in such office and in any
other office or agency designated pursuant to Section 1002 being herein
sometimes referred to as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Securities and of transfers of Securities.  The Security
Register shall be in written form or any other form capable of being converted
into written form within a reasonable time.  At all reasonable times, the
Security Register shall be open to inspection by the Trustee.  The Trustee is
hereby initially appointed as security registrar (the "Security Registrar")
for the purpose of registering Securities and transfers of Securities as
herein provided.

         Upon surrender for registration of transfer of any Security at the
office or agency of the Company designated pursuant to Section 1002, the
Company shall execute, the Guarantors shall endorse Guarantees on, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Securities of any authorized
denomination or denominations of a like aggregate principal amount.

         At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination and of a like aggregate principal
amount, upon surrender of the Securities to be exchanged at such office or
agency.  Whenever any Securities are so surrendered for exchange, the Company
shall execute, the Guarantors shall endorse Guarantees on, and the Trustee
shall authenticate and deliver the Securities which the Holder making the
exchange is entitled to receive.

         All Securities issued upon any registration of transfer or exchange
of Securities shall be the valid obligations of the Company and the
Guarantors, evidencing the same debt, and entitled to the same benefits under
this Indenture, as the Securities surrendered upon such registration of
transfer or exchange.

         Every Security presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Security
Registrar) be duly endorsed, or be accompanied by a written instrument of
transfer, in form satisfactory to the Company and the Security Registrar, duly
executed by the Holder thereof or his attorney duly authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange or redemption of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be
imposed in connection with any registration of transfer or exchange of
Securities, other than exchanges pursuant to Section 304, 906, 1010 or 1108
not involving any transfer.

         The Company shall not be required (i) to issue, register the transfer
of or exchange any Security during a period beginning at the opening of
business 15 days before the selection of Securities to be redeemed under
Section 1104 and ending at the close of business on the day of such mailing of
the relevant notice of redemption, or (ii) to register the transfer of or
exchange any Security so selected for redemption in whole or in part, except
the unredeemed portion of any Security being redeemed in part.

         SECTION 306.   Mutilated, Destroyed, Lost and Stolen Securities.

         If (i) any mutilated Security is surrendered to the Trustee, or (ii)
the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them
to save each of them harmless, then, in the absence of notice to the Company
or the Trustee that such Security has been acquired by a bona fide purchaser,
the Company shall execute, the Guarantors shall endorse a Guarantee on and
upon Company Order the Trustee shall authenticate and deliver, in exchange for
any such mutilated Security or in lieu of any such destroyed, lost or stolen
Security, a new Security of like tenor and principal amount, bearing a number
not contemporaneously outstanding.

         In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

         Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

         Every new Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company and the Guarantors, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Securities.

         SECTION 307.   Payment of Interest; Interest Rights Preserved.

         Interest on any Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in
whose name such Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest at the
office or agency of the Company maintained for such purpose pursuant to
Section 1002; provided, however, that each installment of interest may at the
Company's option be paid by (i) mailing a check for such interest, payable to
or upon the written order of the Person entitled thereto pursuant to Section
308, to the address of such Person as it appears in the Security Register or
(ii) transfer to an account maintained by the payee located in the United
States.

         Any interest on any Security which is payable, but is not punctually
paid or duly provided for, on any Interest Payment Date shall forthwith cease
to be payable to the Holder on the Regular Record Date by virtue of having
been such Holder, and such defaulted interest and (to the extent lawful)
interest on such defaulted interest at the rate borne by the Securities (such
defaulted interest and interest thereon herein collectively called "Defaulted
Interest") may be paid by the Company, at its election in each case, as
provided in clause (1) or (2) below:

         (1)   The Company may elect to make payment of any Defaulted Interest
   to the Persons in whose names the Securities (or their respective
   Predecessor Securities) are registered at the close of business on a
   Special Record Date for the payment of such Defaulted Interest, which shall
   be fixed in the following manner.  The Company shall notify the Trustee in
   writing of the amount of Defaulted Interest proposed to be paid on each
   Security and the date of the proposed payment, and at the same time the
   Company shall deposit with the Trustee an amount of money equal to the
   aggregate amount proposed to be paid in respect of such Defaulted Interest
   or shall make arrangements satisfactory to the Trustee for such deposit
   prior to the date of the proposed payment, such money when deposited to be
   held in trust for the benefit of the Persons entitled to such Defaulted
   Interest as in this clause provided.  Thereupon the Trustee shall fix a
   Special Record Date for the payment of such Defaulted Interest which shall
   be not more than 15 days and not less than 10 days prior to the date of the
   proposed payment and not less than 10 days after the receipt by the Trustee
   of the notice of the proposed payment.  The Trustee shall promptly notify
   the Company of such Special Record Date, and in the name and at the expense
   of the Company, shall cause notice of the proposed payment of such
   Defaulted Interest and the Special Record Date therefor to be given in the
   manner provided for in Section 106, not less than 10 days prior to such
   Special Record Date.  Notice of the proposed payment of such Defaulted
   Interest and the Special Record Date therefor having been so given, such
   Defaulted Interest shall be paid to the Persons in whose names the
   Securities (or their respective Predecessor Securities) are registered at
   the close of business on such Special Record Date and shall no longer be
   payable pursuant to the following clause (2).

         (2)   The Company may make payment of any Defaulted Interest in any
   other lawful manner not inconsistent with the requirements of any
   securities exchange on which the Securities may be listed, and upon such
   notice as may be required by such exchange, if, after notice given by the
   Company to the Trustee of the proposed payment pursuant to this clause,
   such manner of payment shall be deemed practicable by the Trustee.

         Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

         SECTION 308.   Persons Deemed Owners.

         Prior to the due presentment of a Security for registration of
transfer, the Company, the Guarantors, the Trustee and any agent of the
Company, any Guarantor or the Trustee may treat the Person in whose name such
Security is registered as the owner of such Security for the purpose of
receiving payment of principal of (and premium, if any, on) and (subject to
Sections 305 and 307) interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and none of the Company,
any Guarantor, the Trustee or any agent of the Company, any Guarantor or the
Trustee shall be affected by notice to the contrary.

         SECTION 309.   Cancellation.

         All Securities surrendered for payment, redemption, registration of
transfer or exchange shall, if surrendered to any Person other than the
Trustee, be delivered to the Trustee and shall be promptly cancelled by it.
The Company may at any time deliver to the Trustee for cancellation any
Securities previously authenticated and delivered hereunder which the Company
may have acquired in any manner whatsoever, and may deliver to the Trustee (or
to any other Person for delivery to the Trustee) for cancellation any
Securities previously authenticated hereunder which the Company has not issued
and sold, and all Securities so delivered shall be promptly cancelled by the
Trustee.  If the Company shall so acquire any of the Securities, however, such
acquisition shall not operate as a redemption or satisfaction of the
indebtedness represented by such Securities unless and until the same are
surrendered to the Trustee for cancellation.  No Securities shall be
authenticated in lieu of or in exchange for any Securities cancelled as
provided in this Section, except as expressly permitted by this Indenture.
All cancelled Securities held by the Trustee shall be disposed of by the
Trustee in accordance with its customary procedures and certification of
their disposal delivered to the Company unless by Company Order the Company
shall direct that cancelled Securities be returned to it.

         SECTION 310.   Computation of Interest.

         Interest on the Securities shall be computed on the basis of a
360-day year of twelve 30-day months.

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

         SECTION 401.   Satisfaction and Discharge of Indenture.

         This Indenture shall upon Company Request cease to be of further
effect (except as to surviving rights of registration of transfer or exchange
of Securities herein expressly provided for) and the Trustee, at the expense
of the Company, shall execute proper instruments acknowledging satisfaction
and discharge of this Indenture when

         (1)   either

               (a)   all Securities theretofore authenticated and delivered
         (other than (i) Securities which have been destroyed, lost or stolen
         and which have been replaced or paid as provided in Section 306 and
         (ii) Securities for whose payment money has theretofore been
         deposited in trust with the Trustee or any Paying Agent or segregated
         and held in trust by the Company and thereafter repaid to the Company
         or discharged from such trust, as provided in Section 1003) have been
         delivered to the Trustee for cancellation; or

               (b)   all such Securities not theretofore delivered to the
         Trustee for cancellation

                     (i) have become due and payable, or

                     (ii)  will become due and payable at their Stated
               Maturity within one year, or

                     (iii) are to be called for redemption within one year
               under arrangements satisfactory to the Trustee for the giving
               of notice of redemption by the Trustee in the name, and at the
               expense, of the Company,

         and the Company in the case of (i), (ii) or (iii) above, has
         irrevocably deposited or caused to be deposited with the Trustee as
         trust funds in trust for the purpose an amount sufficient to pay and
         discharge the entire indebtedness on such Securities not theretofore
         delivered to the Trustee for cancellation, for principal (and
         premium, if any) and interest to the date of such deposit (in the
         case of Securities which have become due and payable) or to the
         Stated Maturity or Redemption Date, as the case may be;

         (2)   the Company has paid or caused to be paid all other sums payable
   hereunder by the Company; and

         (3)   the Company has delivered to the Trustee an Officers'
   Certificate and an Opinion of Counsel, each stating that (i) all conditions
   precedent herein provided for relating to the satisfaction and discharge of
   this Indenture have been complied with and (ii) such satisfaction and
   discharge will not result in a breach or violation of, or constitute a
   default hereunder or under any other material agreement or instrument to
   which the Company or any Guarantor is a party or by which the Company or
   any Guarantor is bound.

         Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company and the Guarantors to the Trustee under Section 606
and, if money shall have been deposited with the Trustee pursuant to subclause
(b) of clause (1) of this Section, the obligations of the Trustee under
Section 402 and the last paragraph of Section 1003 shall survive.

         SECTION 402.   Application of Trust Money.

         Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities
and this Indenture, to the payment, either directly or through any Paying
Agent (including the Company acting as its own Paying Agent), as the Trustee
may determine, to the Persons entitled thereto, of the principal (and premium,
if any) and interest for whose payment such money has been deposited with the
Trustee; but such money need not be segregated from other funds except to the
extent required by law.


                                 ARTICLE FIVE

                                   REMEDIES

         SECTION 501.   Events of Default.

         "Event of Default", wherever used herein, means any one of the
following events (whatever the reason for such  Event of Default and whether
it shall be occasioned by the provisions of Article Thirteen or Fourteen or be
voluntary or involuntary or be effected by operation of law or pursuant to any
judgment, decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

         (1)   default in the payment of any interest on any Security when it
   becomes due and payable, and continuance of such default for a period of 30
   days; or

         (2)   default in the payment of the principal of (or premium, if any,
   on) any Security at its Maturity; or

         (3)   (i) default in the performance, or breach, of any covenant or
   warranty of the Company, ADT Limited or any of the other Restricted
   Subsidiaries in this Indenture (other than a default in the performance, or
   breach, of a covenant or warranty which is specifically dealt with
   elsewhere in paragraphs (1) or (2) of this Section 501 or in clauses (ii)
   and (iii) of this paragraph (3)), and continuance of such default or breach
   for a period of 60 days after there has been given, by registered or
   certified mail, to the Company by the Trustee or to the Company and the
   Trustee by the Holders of at least 25% in principal amount of the
   Outstanding Securities a written notice specifying such default or breach;
   (ii) default in the performance or breach of the provisions of Article
   Eight hereof or (iii) the Company shall have failed to make or consummate a
   Change in Control Offer in accordance with the provisions of Section 1010
   hereof; or

         (4)   (i) there shall have occurred one or more defaults by the
   Company, ADT Limited or any of the other Restricted Subsidiaries in the
   payment of the principal of (or premium, if any, on) Indebtedness
   aggregating $15,000,000 or more when the same becomes due and payable at
   its final maturity or (ii) Indebtedness of the Company, ADT Limited or any
   of the other Restricted Subsidiaries aggregating $15,000,000 or more shall
   have been accelerated or otherwise declared due and payable, or required to
   be prepaid or repurchased (other than by regularly scheduled required
   prepayment or prepayments in respect of asset sales, excess cash flow or
   new financings), including amounts declared due and payable by virtue of
   any demand for cash collateralization, aggregating $15,000,000 or more, of
   any letter of credit prior to its final maturity; or

         (5)   any Person entitled to take the actions described in this
   Section 501(5), after the occurrence of any event of default under any
   agreement or instrument evidencing any Indebtedness in excess of
   $15,000,000 in the aggregate (which, in the case of interest rate contracts
   or exchange rate contracts, shall be deemed to be the net Indebtedness
   outstanding under such contract on the date or during any period during
   which any action described in this Section 501(5) is taken) of the Company,
   ADT Limited or any of the other Restricted Subsidiaries, shall notify the
   Trustee of the intended sale or disposition of any assets of the Company,
   ADT Limited or any of the other Restricted Subsidiaries that have been
   pledged to or for the benefit of such Person to secure such Indebtedness or
   shall commence proceedings, or take any action (including by way of
   set-off) to retain in satisfaction of any Indebtedness, or to collect on,
   seize, dispose of or apply, any such assets of the Company, ADT Limited or
   any of the other Restricted Subsidiaries (including funds on deposit or
   held pursuant to lock-box and other similar arrangements), pursuant to the
   terms of any agreement or instrument evidencing any such Indebtedness of
   the Company, ADT Limited or any such other Restricted Subsidiary or in
   accordance with applicable law; or

         (6)   final judgments or orders rendered against the Company, ADT
   Limited or any of the other Restricted Subsidiaries that require the
   payment in money, either individually or in an aggregate amount, of more
   than $15,000,000 (net of amounts covered by insurance) and either (i) an
   enforcement proceeding shall have been commenced by any creditor upon such
   judgment or order or (ii) there shall have been a period of 30 consecutive
   days during which a stay of enforcement of such judgment or order, by
   reason of pending appeal or otherwise, was not in effect; or

         (7)   the entry of a decree or order by a court having jurisdiction
   in the premises adjudging the Company, ADT Limited or any other Material
   Restricted Subsidiary a bankrupt or insolvent, or approving as properly
   filed a petition seeking reorganization, arrangement, adjustment or
   composition of or in respect of the Company, ADT Limited or any other
   Material Restricted Subsidiary under the Federal Bankruptcy Code or any
   other applicable federal or state law, or appointing a receiver,
   liquidator, assignee, trustee, sequestrator (or other similar official) of
   the Company, ADT Limited or any other Material Restricted Subsidiary or of
   any substantial part of its property, or ordering the winding up or
   liquidation of its affairs, and the continuance of any such decree or order
   unstayed and in effect for a period of 90 consecutive days; or

         (8)   the institution by the Company, ADT Limited or any other
   Material Restricted Subsidiary of proceedings to be adjudicated a bankrupt
   or insolvent, or the consent by it to the institution of bankruptcy or
   insolvency proceedings against it, or the filing by it of a petition or
   answer or consent seeking reorganization or relief under the Federal
   Bankruptcy Code or any other applicable federal or state law, or the
   consent by it to the filing of any such petition or to the appointment of a
   receiver, liquidator, assignee, trustee, sequestrator (or other similar
   official) of the Company, ADT Limited or any other Material Restricted
   Subsidiary or of any substantial part of its property, or the making by it
   of an assignment for the benefit of creditors, or the admission by it in
   writing of its inability to pay its debts generally as they become due; or

         (9)   any Guarantee shall for any reason cease to be, or be asserted
   in writing by any Guarantor thereof or the Company not to be, in full force
   and effect, and enforceable in accordance with its terms (other than by
   reason of the termination of this Indenture or the release of any such
   Guarantee in accordance with this Indenture); provided, however, that if
   the Company or any Guarantor asserts in writing that any Guarantee is not
   in full force and effect and enforceable in accordance with its terms, such
   assertion shall not constitute an Event of Default for purposes of this
   paragraph (10) if (x) such written assertion is accompanied by an Opinion
   of Counsel to the effect that, as a matter of law, the defect or defects
   rendering such Guarantee unenforceable can be remedied within 10 days of
   the date of such assertion, (y) the Company or such Guarantor delivers an
   Officers' Certificate to the effect that the Company or such Guarantor
   represents that such defect or defects shall be so remedied within such
   10-day period, and (z) such defect or defects are in fact so remedied
   within such 10-day period.

         SECTION 502.   Acceleration of Maturity; Rescission and Annulment.

         If an Event of Default (other than an Event of Default specified in
Section 501(7) or 501(8)) occurs and is continuing, then and in every such
case the Trustee or the Holders of not less than 25% in principal amount of
the Securities Outstanding may declare all unpaid principal of (and premium,
if any, on) and any accrued interest on all the Securities to be due and
payable immediately, by a notice in writing to the Company and, if the New
Bank Credit Agreement is in effect, to the Agent (and to the Trustee if given
by Holders), and upon any such declaration such principal amount shall become
due and payable (i) if the New Bank Credit Agreement is not in effect,
immediately or (ii) if the New Bank Credit Agreement is in effect, upon the
earlier of (x) five Business Days after receipt by the Agent of such notice
and (y) acceleration of Indebtedness under the New Bank Credit Agreement.  If
an Event of Default specified in Section 501(7) or 501(8) occurs and is
continuing, then the principal amount of all the Securities shall ipso facto
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any Holder.

         At any time after a declaration of acceleration has been made but
before a judgment or decree for payment of the money due has been obtained by
the Trustee as hereinafter in this Article provided, the Holders of at least a
majority in aggregate principal amount of the Securities Outstanding, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if:

         (1)   the Company has paid or deposited with the Trustee a sum
   sufficient to pay,

               (A)   all overdue interest on all Outstanding Securities,

               (B) the principal of (and premium, if any, on) any
         Outstanding Securities which have become due otherwise than by
         such declaration of acceleration, and interest on such unpaid
         principal at the rate borne by the Securities,

               (C)   to the extent that payment of such interest is lawful,
         interest on overdue interest at the rate borne by the Securities, and

               (D) all sums paid or advanced by the Trustee hereunder and
         the reasonable compensation, expenses, disbursements and advances
         of the Trustee, its agents and counsel; and

         (2)   all Events of Default, other than the non-payment of amounts of
   principal of the Securities that have become due solely by such declaration
   of acceleration, have been cured or waived as provided in Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

         Notwithstanding the preceding paragraph, in the event of a
declaration of acceleration in respect of the Securities because an Event of
Default specified in Section 501(4) shall have occurred and be continuing,
such declaration of acceleration shall be automatically annulled if the
holders of the Indebtedness that is the subject of such Event of Default have
rescinded their declaration of acceleration in respect of such Indebtedness,
and written notice of such rescission shall have been given to the Trustee by
the Company and countersigned by the holders of such Indebtedness or a
trustee, fiduciary or agent for such holders, within 60 days after such
declaration of acceleration in respect of the Securities, and no other Event
of Default has occurred during such 60-day period which has not been cured or
waived during such period.

         Upon a determination by the Company that the New Bank Credit
Agreement is no longer in effect, the Company shall promptly give to the
Trustee written notice thereof, which notice shall be countersigned by the
Agent.  Unless and until the Trustee shall have received such written notice
with respect to the New Bank Credit Agreement, the Trustee, subject to the TIA
Sections 315(a) through 315(d), shall be entitled in all respects to assume
that the New Bank Credit Agreement is in effect (unless a Responsible Officer
within the Corporate Trust Office of the Trustee charged with responsibility
for administering this trust shall have actual knowledge to the contrary).

         SECTION 503.   Collection of Indebtedness and Suits for Enforcement
by Trustee.

         The Company and each Guarantor covenant that if

         (a)   default is made in the payment of any installment of interest
   on any Security when such interest becomes due and payable and such default
   continues for a period of 30 days, or

         (b)   default is made in the payment of the principal of (or premium,
   if any, on) any Security at the Maturity thereof,

the Company and such Guarantor will, upon demand of the Trustee, pay to the
Trustee for the benefit of the Holders of such Securities, the whole amount
then due and payable on such Securities for principal (and premium, if any)
and interest, and interest on any overdue principal (and premium, if any) and,
to the extent that payment of such interest shall be legally enforceable, upon
any overdue installment of interest, at the rate borne by the Securities, and,
in addition thereto, such further amount as shall be sufficient to cover the
costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

         If the Company or any Guarantor fails to pay such amounts forthwith
upon such demand, the Trustee, in its own name as trustee of an express trust,
may institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or such Guarantor and collect the moneys
adjudged or decreed to be payable in the manner provided by law out of the
property of the Company or such Guarantor, wherever situated.

         If an Event of Default occurs and is continuing, the Trustee may in
its discretion proceed to protect and enforce its rights and the rights of the
Holders by such appropriate private or judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, whether for
the specific enforcement of any covenant or agreement in this Indenture or in
aid of the exercise of any power granted herein, including, without
limitation, seeking recourse against any Guarantor pursuant to the terms of
its Guarantee, or to enforce any other proper remedy.

         SECTION 504.   Trustee May File Proofs of Claim.

         In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any Guarantor or the property
of the Company or any Guarantor or their creditors, the Trustee (irrespective
of whether the principal of the Securities shall then be due and payable as
therein expressed or by declaration or otherwise and irrespective of whether
the Trustee shall have made any demand on the Company or any Guarantor for the
payment of overdue principal, premium, if any, or interest) shall be entitled
and empowered, by intervention in such proceeding or otherwise,

         (i)   to file and prove a claim for the whole amount of principal
   (and premium, if any) and interest owing and unpaid in respect of the
   Securities and to file such other papers or documents as may be necessary
   or advisable in order to have the claims of the Trustee (including any
   claim for the reasonable compensation, expenses, disbursements and advances
   of the Trustee, its agents and counsel) and of the Holders allowed in such
   judicial proceeding, and

         (ii)  to collect and receive any moneys or other property payable or
   deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay
the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any
other amounts due the Trustee under Section 606.

         Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof, or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

         SECTION 505.   Trustee May Enforce Claims Without Possession of
Securities.

         All rights of action and claims under this Indenture, the Securities
and the Guarantees may be prosecuted and enforced by the Trustee without the
possession of any of the Securities or the production thereof in any
proceeding relating thereto, and any such proceeding instituted by the Trustee
shall be brought in its own name and as trustee of an express trust, and any
recovery of judgment shall, after provision for the payment of the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

         SECTION 506.   Application of Money Collected.

         Subject to Articles Thirteen and Fourteen, any money collected by the
Trustee pursuant to this Article shall be applied in the following order, at
the date or dates fixed by the Trustee and, in case of the distribution of
such money on account of principal (or premium, if any) or interest, upon
presentation of the Securities and the notation thereon of the payment if only
partially paid and upon surrender thereof if fully paid:

         FIRST:  To the payment of all amounts due the Trustee under Section
   606;

         SECOND:  To the payment of the amounts then due and unpaid for
   principal of (and premium, if any, on,) and interest on the Securities in
   respect of which or for the benefit of which such money has been collected,
   ratably, without preference or priority of any kind, according to the
   amounts due and payable on such Securities for principal (and premium, if
   any) and interest, respectively; and

         THIRD:  The balance, if any, to the Person or Persons entitled
   thereto.

         SECTION 507.   Limitation on Suits.

         No Holder of any Securities shall have any right to institute any
proceeding, judicial or otherwise, with respect to this Indenture, or for
the appointment of a receiver or trustee, or for any other remedy
hereunder, unless

         (1)   such Holder has previously given written notice to the Trustee
   of a continuing Event of Default;

         (2)   the Holders of not less than 25% in principal amount of the
   Outstanding Securities shall have made written request to the Trustee to
   institute proceedings in respect of such Event of Default in its own name
   as Trustee hereunder;

         (3)   such Holder or Holders have offered to the Trustee reasonable
   indemnity against the costs, expenses and liabilities to be incurred in
   compliance with such request;

         (4)   the Trustee for 60 days after its receipt of such notice,
   request and offer of indemnity has failed to institute any such proceeding;
   and

         (5)   no direction inconsistent with such written request has been
   given to the Trustee during such 60-day period by the Holders of a majority
   or more in principal amount of the Outstanding Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other
Holders, or to obtain or to seek to obtain priority or preference over any
other Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all the
Holders.

         SECTION 508.   Unconditional Right of Holders to Receive Principal,
Premium and Interest.

         Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment, as provided herein (including, if applicable, Article Twelve)
and in such Security of the principal of (and premium, if any, on) and
(subject to Section 307) interest on, such Security on the respective Stated
Maturities expressed in such Security (or, in the case of redemption, on the
Redemption Date) and to institute suit for the enforcement of any such
payment, and such rights shall not be impaired without the consent of such
Holder.

         SECTION 509.   Restoration of Rights and Remedies.

         If the Trustee or any Holder has instituted any proceeding to enforce
any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantors, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

         SECTION 510.   Rights and Remedies Cumulative.

         Except as otherwise provided with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other
right or remedy, and every right and remedy shall, to the extent permitted by
law, be cumulative and in addition to every other right and remedy given
hereunder or now or hereafter existing at law or in equity or otherwise.  The
assertion or employment of any right or remedy hereunder, or otherwise, shall
not prevent the concurrent assertion or employment of any other appropriate
right or remedy.

         SECTION 511.   Delay or Omission Not Waiver.

         No delay or omission of the Trustee or of any Holder of any Security
to exercise any right or remedy accruing upon any Event of Default shall
impair any such right or remedy or constitute a waiver of any such Event of
Default or an acquiescence therein.  Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time
to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

         SECTION 512.   Control by Holders.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities shall have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee, provided that

         (1)   such direction shall not be in conflict with any rule of law or
   with this Indenture,

         (2)   the Trustee may take any other action deemed proper by the
   Trustee which is not inconsistent with such direction, and

         (3) the Trustee need not take any action which might involve it in
   personal liability or be unjustly prejudicial to the Holders not
   consenting.

         SECTION 513.   Waiver of Past Defaults.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities may on behalf of the Holders of all the Securities
waive any past default hereunder and its consequences, except a default

         (1)   in respect of the payment of the principal of (or premium, if
   any, on) or interest on any Security, or

         (2)   in respect of a covenant or provision hereof which under
   Article Nine cannot be modified or amended without the consent of the
   Holder of each Outstanding Security affected.

         Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

         SECTION 514.   Waiver of Stay or Extension Laws.

         The Company and each Guarantor covenant (to the extent that they may
lawfully do so) that they will not at any time insist upon, or plead, or in
any manner whatsoever claim or take the benefit or advantage of, any stay or
extension law wherever enacted, now or at any time hereafter in force, which
may affect the covenants or the performance of this Indenture; and the Company
and each Guarantor (to the extent that they may lawfully do so) hereby
expressly waive all benefit or advantage of any such law and covenant that
they will not hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted.

         SECTION 515.   Undertaking for Costs.

         All parties to this Indenture agree, and each Holder of any Security
by his acceptance thereof shall be deemed to have agreed, that any court may
in its discretion require, in any suit for the enforcement of any right or
remedy under this Indenture, or in any suit against the Trustee for any action
taken, suffered or omitted by it as Trustee, the filing by any party litigant
in such suit of an undertaking to pay the costs of such suit, and that such
court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to any suit
instituted by the Trustee, to any suit instituted by any Holder, or group of
Holders, holding in the aggregate more than 10% in principal amount of the
Outstanding Securities, or to any suit instituted by any Holder for the
enforcement of the payment of the principal of (premium, if any, on) or
interest on any Security on or after the respective Stated Maturities
expressed in such Security (or, in the case of redemption, on or after the
Redemption Date).


                                  ARTICLE SIX

                                  THE TRUSTEE

         SECTION 601.   Notice of Defaults.

         Within 90 days after the occurrence of any Default hereunder, the
Trustee shall transmit in the manner and to the extent provided in TIA Section
313(c), notice of such Default hereunder known to the Trustee, unless such
Default shall have been cured or waived; provided, however, that, except in
the case of a Default in the payment of the principal of (or premium, if any,
on) or interest on any Security or in the payment of any sinking fund
installment, the Trustee shall be protected in withholding such notice if and
so long as the board of directors, the executive committee or a trust
committee of directors and/or Responsible Officers of the Trustee in good
faith determines that the withholding of such notice is in the interest of the
Holders; and provided further that in the case of any Default of the character
specified in clause (i) of Section 501(3) no such notice to Holders shall be
given until at least 60 days after the occurrence thereof.

         The Trustee shall not be deemed to have knowledge of any Default or
Event of Default except (i) any Event of Default occurring pursuant to Section
501(1) or 501(2) of this Indenture or (ii) any Default or Event of Default of
which the Trustee shall have received written notification or obtained actual
knowledge, and such notification shall not be deemed to include receipt of
information obtained in any report or other documents furnished under Section
703 of this Indenture, which reports and documents the Trustee shall have no
duty to examine.

         SECTION 602.   Certain Rights of Trustee.

         Subject to the provisions of TIA Sections 315(a) through 315(d):

         (1)   the Trustee may rely and shall be protected in acting or
   refraining from acting upon any resolution, certificate, statement,
   instrument, opinion, report, notice, request, direction, consent, order,
   bond, debenture, note, other evidence of indebtedness or other paper or
   document believed by it to be genuine and to have been signed or presented
   by the proper party or parties;

         (2)   any request or direction of the Company mentioned herein shall
   be sufficiently evidenced by a Company Request or Company Order and any
   resolution of the board of directors of the Company may be sufficiently
   evidenced by a Board Resolution;

         (3)   whenever in the administration of this Indenture the Trustee
   shall deem it desirable that a matter be proved or established prior to
   taking, suffering or omitting any action hereunder, the Trustee (unless
   other evidence be herein specifically prescribed) may, in the absence of
   bad faith on its part, rely upon an Officers' Certificate;

         (4)   the Trustee may consult with counsel and the written advice of
   such counsel or any Opinion of Counsel shall be full and complete
   authorization and protection in respect of any action taken, suffered or
   omitted by it hereunder in good faith and in reliance thereon;

         (5)   the Trustee shall be under no obligation to exercise any of the
   rights or powers vested in it by this Indenture at the request or direction
   of any of the Holders pursuant to this Indenture, unless such Holders shall
   have offered to the Trustee reasonable security or indemnity against the
   costs, expenses and liabilities which might be incurred by it in compliance
   with such request or direction;

         (6)   the Trustee shall not be bound to make any investigation into
   the facts or matters stated in any resolution, certificate, statement,
   instrument, opinion, report, notice, request, direction, consent, order,
   bond, debenture, note, other evidence of indebtedness or other paper or
   document, but the Trustee, in its discretion, may make such further inquiry
   or investigation into such facts or matters as it may see fit, and, if the
   Trustee shall determine to make such further inquiry or investigation, it
   shall be entitled to examine the books, records and premises of the Company
   or any Guarantor, personally or by agent or attorney;

         (7)   the Trustee may execute any of the trusts or powers hereunder
   or perform any duties hereunder either directly or by or through agents or
   attorneys and the Trustee shall not be responsible for any misconduct or
   negligence on the part of any agent or attorney appointed with due care by
   it hereunder;

         (8)   the Trustee shall not be liable for any action taken, suffered
   or omitted by it in good faith and believed by it to be authorized or
   within the discretion or rights or powers conferred upon it by this
   Indenture; and

         (9)   the Trustee shall not be deemed to have knowledge of the
   occurrence of a Change in Control or of the fact that the amount of Excess
   Proceeds equals or exceeds $20,000,000 until the Trustee receives written
   notice thereof as required by this Indenture.

         The Trustee shall not be required to expend or risk its own funds or
otherwise incur any financial liability in the performance of any of its
duties hereunder, or in the exercise of any of its rights or powers if it
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it.

         SECTION 603.   Trustee Not Responsible for Recitals or Issuance of
Securities.

         The recitals contained herein, in the Securities and in the
Guarantees, except for the Trustee's certificates of authentication, shall be
taken as the statements of the Company and each Guarantor, and the Trustee
assumes no responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this Indenture, the
Securities or the Guarantees, except that the Trustee represents that it is
duly authorized to execute and deliver this Indenture, authenticate the
Securities and perform its obligations hereunder and that the statements made
by it in a Statement of Eligibility and Qualification on Form T-1 supplied to
the Company are true and accurate, subject to the qualifications set forth
therein.  The Trustee shall not be accountable for the use or application by
the Company of Securities or the proceeds thereof.

         SECTION 604.   May Hold Securities.

         The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company or of the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to TIA
Sections 310(b) and 311, may otherwise deal with the Company with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar
or such other agent.

         SECTION 605.   Money Held in Trust.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law.  The Trustee shall be
under no liability for interest on any money received by it hereunder except
as otherwise agreed with the Company.

         SECTION 606.   Compensation and Reimbursement.

         The Company and each Guarantor agree:

         (1)   to pay to the Trustee from time to time reasonable compensation
   for all services rendered by it hereunder (which compensation shall not be
   limited by any provision of law in regard to the compensation of a trustee
   of an express trust);

         (2)   except as otherwise expressly provided herein, to reimburse the
   Trustee upon its request for all reasonable expenses, disbursements and
   advances incurred or made by the Trustee in accordance with any provision
   of this Indenture (including the reasonable compensation and the expenses
   and disbursements of its agents and counsel), except any such expense,
   disbursement or advance as may be attributable to its negligence or bad
   faith; and

         (3)   to indemnify the Trustee, and its officers, directors,
   employees and agents, for, and to hold them harmless against, any loss,
   liability or expense incurred without negligence or bad faith on their
   part, arising out of or in connection with the acceptance or administration
   of this trust, including the costs and expenses of defending themselves
   against any claim or liability in connection with the exercise or
   performance of any of their powers or duties hereunder.

         The obligations of the Company and the Guarantors under this Section
to compensate the Trustee, to pay or reimburse the Trustee for expenses,
disbursements and advances and to indemnify and hold harmless the Trustee
shall constitute additional indebtedness hereunder and shall survive the
satisfaction and discharge of this Indenture.  As security for the
performance of such obligations of the Company and the Guarantors, the
Trustee shall have a claim prior to the Securities upon all property and
funds held or collected by the Trustee as such, except funds held in trust
for the payment of principal of (and premium, if any, on) or interest on
particular Securities.

         SECTION 607.   Corporate Trustee Required; Eligibility.

         There shall at all times be a Trustee hereunder which shall be
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a
combined capital and surplus of at least $50,000,000.  If such corporation
publishes reports of condition at least annually, pursuant to law or to the
requirements of federal, state, territorial or District of Columbia
supervising or examining authority, then for the purposes of this Section, the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of
condition so published.  If at any time the Trustee shall cease to be eligible
in accordance with the provisions of this Section, it shall resign immediately
in the manner and with the effect hereinafter specified in this Article.

         SECTION 608.   Resignation and Removal; Appointment of Successor.

         (a)   No resignation or removal of the Trustee and no appointment of
a successor Trustee pursuant to this Article  shall become effective until the
acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 609.

         (b)   The Trustee may resign at any time by giving written notice
thereof to the Company.  If the instrument of acceptance by a successor
Trustee required by Section 609 shall not have been delivered to the Trustee
within 30 days after the giving of such notice of resignation, the resigning
Trustee may petition any court of competent jurisdiction for the appointment
of a successor Trustee.

         (c)   The Trustee may be removed at any time by Act of the Holders of
not less than a majority in principal amount of the Outstanding Securities,
delivered to the Trustee and to the Company.

         (d)   If at any time:

         (1)   the Trustee shall fail to comply with the provisions of TIA
   Section 310(b) after written request therefor by the Company or by any
   Holder who has been a bona fide Holder of a Security for at least six
   months, or

         (2)   the Trustee shall cease to be eligible under Section 607 and
   shall fail to resign after written request therefor by the Company or by
   any Holder who has been a bona fide Holder of a Security for at least six
   months, or

         (3)   the Trustee shall become incapable of acting or shall be
   adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
   property shall be appointed or any public officer shall take charge or
   control of the Trustee or of its property or affairs for the purpose of
   rehabilitation, conservation or liquidation,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee, or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself
and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

         (e)   If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause,
the Company, by a Board Resolution, shall promptly appoint a successor
Trustee.  If,  within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities delivered to the Company and the retiring Trustee, the
successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment, become the successor Trustee and supersede the successor Trustee
appointed by the Company.  If no successor Trustee shall have been so
appointed by the Company or the Holders and accepted appointment in the manner
hereinafter provided, any Holder who has been a bona fide Holder of a Security
for at least six months may, on behalf of himself and all others similarly
situated, petition any court of competent jurisdiction for the appointment of
a successor Trustee.

         (f)   The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to the
Holders of Securities in the manner provided for in Section 106.  Each notice
shall include the name of the successor Trustee and the address of its
Corporate Trust Office.

         SECTION 609.   Acceptance of Appointment by Successor.

         Every successor Trustee appointed hereunder shall execute,
acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or
removal of the retiring Trustee shall become effective and such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee; but, on
request of the Company or the successor Trustee, such retiring Trustee shall,
upon payment of its charges, execute and deliver an instrument transferring to
such successor Trustee all the rights, powers and trusts of the retiring
Trustee and shall duly assign, transfer and deliver to such successor Trustee
all property and money held by such retiring Trustee hereunder.  Upon request
of any such successor Trustee, the Company and each Guarantor shall execute
any and all instruments for more fully and certainly vesting in and confirming
to such successor Trustee all such rights, powers and trusts.

         No successor Trustee shall accept its appointment unless at the time
of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

         SECTION 610.   Merger, Conversion, Consolidation or Succession to
Business.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on
the part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may
adopt such authentication and deliver the Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such
Securities; and in case at that time any of the Securities shall not have been
authenticated, any successor Trustee may authenticate such Securities either
in the name of any predecessor hereunder or in the name of the successor
Trustee; and in all such cases such certificates shall have the full force
which it is anywhere in the Securities or in this Indenture provided that the
certificate of the Trustee shall have; provided, however, that the right to
adopt the certificate of authentication of any predecessor Trustee or to
authenticate Securities in the name of any predecessor Trustee shall apply
only to its successor or successors by merger, conversion or consolidation.


                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

         SECTION 701.   Disclosure of Names and Addresses of Holders.

         Every Holder of Securities, by receiving and holding the same, agrees
with the Company, the Guarantors and the Trustee that none of the Company, the
Guarantors or the Trustee or any agent of any of them shall be held
accountable by reason of the disclosure of any such information as to the
names and addresses of the Holders in accordance with TIA Section 312,
regardless of the source from which such information was derived, and that the
Trustee shall not be held accountable by reason of mailing any material
pursuant to a request made under TIA Section 312(b).

         SECTION 702.   Reports by Trustee.

         Within 60 days after May 15 of each year commencing with the first
May 15 after the first issuance of Securities, the Trustee shall transmit to
the Holders, in the manner and to the extent provided in TIA Section 313(c), a
brief report dated as of such May 15 if required by TIA Section 313(a).

         SECTION 703.   Reports by Company and the Guarantors.

         The Company and each Guarantor shall:

         (1)   file with the Trustee, within 15 days after the Company or such
   Guarantor, as the case may be, is required to file the same with the
   Commission, copies of the annual reports and of the information, documents
   and other reports (or copies of such portions of any of the foregoing as
   the Commission may from time to time by rules and regulations prescribe)
   which the Company or such Guarantor may be required to file with the
   Commission pursuant to Section 13 or Section 15(d) of the Exchange Act; or,
   if the Company or such Guarantor, as the case may be, is not required to
   file information, documents or reports pursuant to either of said Sections,
   then it shall file with the Trustee and the Commission, in accordance with
   rules and regulations prescribed from time to time by the Commission, such
   of the supplementary and periodic information, documents and reports which
   may be required pursuant to Section 13 of the Exchange Act in respect of a
   security listed and registered on a national securities exchange as may be
   prescribed from time to time in such rules and regulations;

         (2)   file with the Trustee and the Commission, in accordance with
   rules and regulations prescribed from time to time by the Commission, such
   additional information, documents and reports with respect to compliance by
   the Company or such Guarantor with the conditions and covenants of this
   Indenture as may be required from time to time by such rules and
   regulations; and

         (3)   transmit by mail to all Holders, in the manner and to the
   extent provided in TIA Section 313(c), within 30 days after the filing
   thereof with the Trustee, such summaries of any information, documents and
   reports required to be filed by the Company or such Guarantor pursuant to
   paragraphs (1) and (2) of this Section as may be required by rules and
   regulations prescribed from time to time by the Commission.


                                  ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

         SECTION 801.   ADT Limited or Any Restricted Subsidiary May
Consolidate, etc., Only on Certain Terms.

         ADT Limited shall not consolidate or amalgamate with or merge with or
into any other Person or, directly or indirectly, sell, convey, assign,
transfer, lease or otherwise dispose of all or substantially all of its
properties and assets to any Person or group of affiliated Persons, or permit
any of the Restricted Subsidiaries to enter into any such transaction or
transactions if such transaction or transactions, in the aggregate, would
result in the sale, conveyance, assignment, transfer, lease or other
disposition of all or substantially all of the properties and assets of the
Company, ADT Limited and the other Restricted Subsidiaries on a consolidated
basis, to any Person or group of affiliated Persons, unless (and, in the case
of certain mergers, consolidations or amalgamations of ADT Limited with or
into any other Person, subject to Section 802 hereof):

         (1)   either (A) the Company, ADT Limited or such other Restricted
   Subsidiary shall be the continuing corporation or (B) such Person (if other
   than the Company, ADT Limited or such other Restricted Subsidiary) formed
   by such consolidation or amalgamation or into which the Company, ADT
   Limited or such other Restricted Subsidiary is amalgamated or merged or the
   Person which acquires by sale, conveyance, assignment, transfer, lease or
   other disposition all or substantially all of the properties and assets of
   the Company, ADT Limited and the other Restricted Subsidiaries (the
   "Surviving Entity") shall be a corporation duly organized and validly
   existing under the laws of the United States of America, any state thereof
   or the District of Columbia except that in the case of ADT Limited or any
   Restricted Subsidiary (other than the Company or any Restricted Subsidiary
   of the Company), the Surviving Entity may be a corporation duly organized
   and validly existing under the laws of Bermuda, Canada, the United Kingdom
   or any political subdivision thereof and shall, in either case, expressly
   assume, by supplemental indenture to this Indenture, executed and delivered
   by the Trustee, in form satisfactory to the Trustee, all the obligations of
   the Company, ADT Limited or such other Restricted Subsidiary under the
   Securities and this Indenture and this Indenture shall remain in full force
   and effect;

         (2)   immediately before and immediately after giving effect to such
   transaction no Default or Event of Default shall have occurred and be
   continuing (and treating any Indebtedness that becomes an obligation of the
   Company, ADT Limited or any other Restricted Subsidiary in connection with
   or as a result of such transaction as having been incurred at the time of
   such transaction);

         (3)   immediately after giving effect to such transaction, the
   Consolidated Net Worth of ADT Limited, if the Company, ADT Limited or any
   other Restricted Subsidiary is the continuing corporation, or the Surviving
   Entity is at least equal to the Consolidated Net Worth of ADT Limited
   immediately before such transaction;

         (4)   each Guarantor, unless it is the other party to the
   transactions described above, shall have by supplemental indenture
   confirmed that its Guarantee shall apply to such Person's obligations under
   the Securities; and

         (5)   the Company and ADT Limited shall have delivered, or caused to
   be delivered, to the Trustee an Officers' Certificate and an Opinion of
   Counsel, each stating that this Section 801 has been complied with and that
   all conditions precedent herein provided for relating to such transaction
   have been satisfied.

Notwithstanding anything contained in this Section 801, the Company and any
Surviving Entity of the Company shall at all times be a corporation duly
organized and validly existing under the laws of the United States of America,
any state thereof or the District of Columbia.

         SECTION 802.   ADT Limited May Amalgamate, Redomesticate, etc., Only
on Certain Terms.

         ADT Limited may (a) amalgamate with or merge with or into a
newly-formed corporation having no assets or liabilities, which amalgamation
or merger shall be solely for the purpose of reincorporating ADT Limited under
the laws of Canada, the United Kingdom or other political subdivision thereof
or the United States of America, any state thereof or the District of Columbia
or (b) continue, redomesticate or otherwise become subject to the laws of a
jurisdiction other than Bermuda, to the same extent as if it had been
incorporated in such jurisdiction, provided that in the case of clauses (a)
and (b) above:

         (1)   the Surviving Entity shall be a corporation duly organized and
   validly existing under the laws of Canada, the United Kingdom or political
   subdivision thereof or the United States of America, any state thereof or
   the District of Columbia and shall, in either case, expressly assume, by
   supplemental indenture to this Indenture, executed and delivered by the
   Trustee, in form satisfactory to the Trustee, all the obligations of ADT
   Limited under the Securities and this Indenture and this Indenture shall
   remain in full force and effect;

         (2)   immediately before and immediately after giving effect to such
   transaction, no Default or Event of Default shall have occurred and be
   continuing (and treating any Indebtedness that becomes an obligation of the
   Company, ADT Limited or any other Restricted Subsidiary in connection with
   or as a result of such transaction as having been incurred at the time of
   such transaction);

         (3)   immediately after giving effect to such transaction, the
   Consolidated Net Worth of the Surviving Entity is at least equal to the
   Consolidated Net Worth of ADT Limited immediately before such transaction
   less customary and reasonable transaction costs;

         (4)   each Guarantor, unless it is the other party to the
   transactions described above, shall have by supplemental indenture
   confirmed that its Guarantee shall apply to such Person's obligations under
   the Securities; and

         (5)   the Surviving Entity shall have delivered, or caused to be
   delivered, to the Trustee an Officers' Certificate and an Opinion of
   Counsel, each stating that this Section 802 has been complied with and that
   all conditions precedent herein provided for relating to such transaction
   have been satisfied.

         SECTION 803.   Successor Substituted.

         Upon any consolidation or amalgamation of ADT Limited or
consolidation of the Company or any Guarantor with or merger of the Company or
any Guarantor with or into any other corporation, or any continuance or
redomestication of ADT Limited in a jurisdiction other than Bermuda, or upon
any conveyance, transfer or lease of all or substantially all of the
properties and assets of the Company, ADT Limited and the other Restricted
Subsidiaries to any Person in accordance with Section 801 or 802, the
successor Person formed by such consolidation, amalgamation, continuance or
redomestication or into which the Company or such Guarantor is merged or to
which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company or
such Guarantor under this Indenture, the Securities and the Guarantees, as the
case may be, with the same effect as if such successor Person had been named
as the Company or such Guarantor, as the case may be, herein, in the
Securities or in the Guarantees, as the case may be, and in the event of any
such conveyance or transfer, the Company or such Guarantor (which terms shall
for this purpose mean the Person named as the "Company" in the first paragraph
of this Indenture, any Guarantor on the date hereof or any successor Person
which shall theretofore become such in the manner described in Section 801 or
802), except in the case of a lease, shall be discharged of all obligations
and covenants under this Indenture, the Securities and the Guarantees, as the
case may be, and may be dissolved and liquidated.


                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

         SECTION 901.   Supplemental Indentures Without Consent of Holders.

         Without the consent of any Holders, the Company and the Guarantors,
when each is authorized by a Board Resolution adopted by their respective
boards of directors or any duly authorized committee thereof, and the Trustee,
at any time and from time to time, may enter into one or more indentures
supplemental hereto, or agreements or other instruments with respect to the
Guarantees, in form satisfactory to the Trustee, for any of the following
purposes:

         (1)   to evidence the succession of another Person to the Company or
   any Guarantor and the assumption by any such successor of the covenants of
   the Company or any Guarantor contained herein, in the Securities or in the
   Guarantees; or

         (2)   to add to the covenants of the Company or any Guarantor for the
   benefit of the Holders or to surrender any right or power herein conferred
   upon the Company or any Guarantor; or

         (3)   to add any additional Events of Default; or

         (4)   to evidence and provide for the acceptance of appointment
   hereunder by a successor Trustee pursuant to the requirements of Section
   609; or

         (5)   to cure any ambiguity, to correct or supplement any provision
   herein which may be inconsistent with any other provision herein, or to
   make any other provisions with respect to matters or questions arising
   under this Indenture; provided that such action shall not adversely affect
   the interests of the Holders in any material respect; or

         (6)   to add a guarantor of the Guaranteed Obligations; or

         (7)   to secure the Securities pursuant to any relevant provision
   under the Indenture.

         SECTION 902.   Supplemental Indentures with Consent of Holders.

         With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Securities, by Act of said Holders
delivered to the Company and the Trustee, the Company and the Guarantors, when
each is authorized by a Board Resolution, and the Trustee may enter into an
indenture or indentures supplemental hereto for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of modifying in any manner the rights of the Holders
under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected
thereby:

         (1)   change the Stated Maturity of the principal of, or any
   installment of interest on, any Security, or reduce the principal amount
   thereof or the rate of interest thereon or any premium payable upon the
   redemption thereof, or change the coin or currency in which any Security or
   any premium or the interest thereon is payable, or impair the right to
   institute suit for the enforcement of any such payment after the Stated
   Maturity thereof (or, in the case of redemption, on or after the Redemption
   Date), or

         (2)   reduce the percentage in principal amount of the Outstanding
   Securities, the consent of whose Holders is required for any such
   supplemental indenture, or the consent of whose Holders is required for any
   waiver of compliance with certain provisions of this Indenture or certain
   defaults hereunder and their consequences provided for in this Indenture, or

         (3)   modify any of the provisions of this Section or Sections 513
   and 1021, except to increase any such percentage or to provide that certain
   other provisions of this Indenture cannot be modified or waived without the
   consent of the Holder of each Outstanding Security affected thereby, or

         (4)   modify any of the provisions of this Indenture relating to a
   Change in Control in a manner adverse to the Holders of the Outstanding
   Securities, or

         (5)   modify any of the provisions of this Indenture relating to the
   subordination of the Securities in a manner adverse to the Holders thereof.

         It shall not be necessary for any Act of Holders under this Section
to approve the particular form of any proposed supplemental indenture, but it
shall be sufficient if such Act shall approve the substance thereof.

         SECTION 903.   Execution of Supplemental Indentures.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby
of the trusts created by this Indenture, the Trustee shall be entitled to
receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture.  The Trustee may, but shall not be obligated to,
enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

         SECTION 904.   Effect of Supplemental Indentures.

         Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Securities theretofore or thereafter authenticated and
delivered hereunder shall be bound thereby.

         SECTION 905.   Conformity with Trust Indenture Act.

         Every supplemental indenture executed pursuant to the Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

         SECTION 906.   Reference in Securities to Supplemental Indentures.

         Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company shall so
determine, new Securities so modified as to conform, in the opinion of the
Trustee and the Company, to any such supplemental indenture may be prepared
and executed by the Company and authenticated and delivered by the Trustee in
exchange for Outstanding Securities.

         SECTION 907.   Notice of Supplemental Indentures.

         Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Security
affected, in the manner provided for in Section 106, setting forth in general
terms the substance of such supplemental indenture.

         SECTION 908.   Effect on Senior Indebtedness.

         No supplemental indenture shall adversely affect the rights of the
holders of Designated Guarantor Senior Indebtedness under Article Thirteen or
Designated Senior Indebtedness under Article Fourteen without the consent of
the representative of such holders.


                                  ARTICLE TEN

                                   COVENANTS

         SECTION 1001.  Payment of Principal, Premium, if any, and Interest.

         The Company covenants and agrees for the benefit of the Holders that
it will duly and punctually pay the principal of (and premium, if any, on) and
interest on the Securities in accordance with the terms of the Securities and
this Indenture.

         SECTION 1002.  Maintenance of Office or Agency.

         The Company will maintain in [The City of Atlanta, an office or
agency where Securities may be presented or surrendered for payment], and will
maintain in The City of New York an office or agency where Securities may be
surrendered for registration of transfer or exchange and where notices and
demands to or upon the Company in respect of the Securities and this Indenture
may be served.  The Corporate Trust Office of the Trustee shall be such office
or agency of the Company, unless the Company shall designate and maintain some
other office or agency for one or more of such purposes.  The Company will
give prompt written notice to the Trustee of any change in the location of any
such office or agency.  If at any time the Company shall fail to maintain any
such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be
made or served at the Corporate Trust Office of the Trustee, and the Company
hereby appoints the Trustee as its agent to receive all such presentations,
surrenders, notices and demands.

         The Company may also from time to time designate one or more other
offices or agencies (in or outside of The City of Atlanta or The City of New
York, as the case may be) where the Securities may be presented or surrendered
for any or all such purposes and may from time to time rescind any such
designation; provided, however, that no such designation or rescission shall
in any manner relieve the Company of its obligation to maintain an office or
agency in The City of Atlanta or The City of New York, as the case may be, for
such purposes.  The Company will give prompt written notice to the Trustee of
any such designation or rescission and any change in the location of any such
other office or agency.

         SECTION 1003.  Money for Security Payments to Be Held in Trust.

         If the Company shall at any time act as its own Paying Agent, it
will, on or before each due date of the principal of (and premium, if any, on)
or interest on any of the Securities, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay the principal
(and premium, if any) or interest so becoming due until such sums shall be
paid to such Persons or otherwise disposed of as herein provided and will
promptly notify the Trustee of its action or failure so to act.

         Whenever the Company shall have one or more Paying Agents for the
Securities, it will, on or before each due date of the principal of (and
premium, if any, on), or interest on, any Securities, deposit with a Paying
Agent a sum sufficient to pay the principal (and premium, if any) or interest
so becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such Paying Agent
is the Trustee) the Company will promptly notify the Trustee of such action or
any failure so to act.

         The Company will cause each Paying Agent (other than the Trustee) to
execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee, subject to the provisions of this Section, that
such Paying Agent will:

         (1)   hold all sums held by it for the payment of the principal of
   (and premium, if any, on) or interest on Securities in trust for the
   benefit of the Persons entitled thereto until such sums shall be paid to
   such Persons or otherwise disposed of as herein provided;

         (2)   give the Trustee notice of any default by the Company or any
   Guarantor in the making of any payment of principal (and premium, if any)
   or interest; and

         (3)   at any time during the continuance of any such default, upon
   the written request of the Trustee, forthwith pay to the Trustee all sums
   so held in trust by such Paying Agent.

         The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held
in trust by the Company or such Paying Agent, such sums to be held by the
Trustee upon the same trusts as those upon which such sums were held by the
Company or such Paying Agent; and, upon such payment by any Paying Agent to
the Trustee, such Paying Agent shall be released from all further liability
with respect to such sums.

         Any money deposited with the Trustee or any Paying Agent, or then
held by the Company, in trust for the payment of the principal of (and
premium, if any, on) or interest on any Security and remaining unclaimed for
two years after such principal (and premium, if any) or interest has become
due and payable shall be paid to the Company on Company Request,  or (if then
held by the Company) shall be discharged from such trust; and the Holder of
such Security shall thereafter, as an unsecured general creditor, look only to
the Company for payment thereof, and all liability of the Trustee or such
Paying Agent with respect to such trust money, and all liability of the
Company as trustee thereof, shall thereupon cease; provided, however, that the
Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in a
newspaper published in the English language, customarily published on each
Business Day and of general circulation in the Borough of Manhattan, The City
of New York, notice that such money remains unclaimed and that, after a date
specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid
to the Company.

         SECTION 1004.  Corporate Existence.

         Subject to Article Eight, the Company and ADT Limited will do or
cause to be done all things necessary to preserve and keep in full force and
effect the corporate existence, rights (charter and statutory) and franchises
of the Company, ADT Limited and each other Restricted Subsidiary; provided,
however, that the Company and ADT Limited shall not be required to preserve
any such right or franchise if the Board of Directors shall determine that the
preservation thereof is no longer desirable in the conduct of the business of
the Company, ADT Limited and the other Restricted Subsidiaries as a whole and
that the loss thereof is not disadvantageous in any material respect to the
Holders.

         SECTION 1005.  Payment of Taxes and Other Claims.

         The Company and ADT Limited will pay or discharge or cause to be paid
or discharged, before the same shall become delinquent, (a) all taxes,
assessments and governmental charges levied or imposed upon the Company, ADT
Limited or any other Subsidiary or upon the income, profits or property of the
Company, ADT Limited or any other Subsidiary and (b) all lawful claims for
labor, materials and supplies, which, if unpaid, might by law become a lien
upon the property of the Company, ADT Limited or any other Restricted
Subsidiary; provided, however, that the Company and ADT Limited shall not be
required to pay or discharge or cause to be paid or discharged any such tax,
assessment, charge or claim whose amount, applicability or validity is being
contested in good faith by appropriate proceedings.

         SECTION 1006.  Maintenance of Properties.

         The Company and ADT Limited will cause all properties owned by the
Company, ADT Limited or any other Restricted Subsidiary or used or held for
use in the conduct of the business of the Company, ADT Limited or any other
Restricted Subsidiary to be maintained and kept in good condition, repair and
working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and
improvements thereof, all as in the judgment of the Company and ADT Limited
may be necessary so that the business carried on in connection therewith may
be properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company and ADT Limited from
discontinuing the maintenance of any of such properties if such discontinuance
is, in the judgment of the Company and ADT Limited, desirable in the conduct
of the business of the Company, ADT Limited or any other Restricted Subsidiary
and not disadvantageous in any material respect to the Holders.

         SECTION 1007.  Insurance.

         The Company and ADT Limited will at all times keep all of the
properties of the Company, ADT Limited and the other Restricted Subsidiaries
which are of an insurable nature insured with insurers, believed by the
Company and ADT Limited to be responsible, against loss or damage to the
extent that property of similar character is usually so insured by
corporations similarly situated and owning like properties.

         SECTION 1008.  Statement by Officers As to Default.

         (a)   Each of ADT Limited and the Company will deliver to the
Trustee, within 120 days after the end of each fiscal year, a brief
certificate from its principal executive officer, principal financial officer
or principal accounting officer as to his or her knowledge of compliance by
the Company, ADT Limited and the other Subsidiaries with all conditions and
covenants applicable to the Company, ADT Limited and the other Subsidiaries
under this Indenture.  For purposes of this Section 1008(a), such compliance
shall be determined without regard to any period of grace or requirement of
notice under this Indenture.

         (b)   When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the holder of  any other evidence of
Indebtedness of the Company, ADT Limited or any other Restricted Subsidiary
gives any notice or takes any other action with respect to a claimed default
(other than with respect to Indebtedness in the principal amount of less than
$15,000,000), the Company or ADT Limited shall deliver to the Trustee by
registered or certified mail or by telegram, telex or facsimile transmission
an Officers' Certificate specifying such event, notice or other action within
five Business Days of its occurrence.

         SECTION 1009.  Provision of Financial Statements.

         Whether or not ADT Limited is subject to Section 13(a) or 15(d) of
the Exchange Act, ADT Limited will, to the extent permitted under the Exchange
Act, file with the Commission the annual reports, quarterly reports and other
documents that ADT Limited would have been required to file with the
Commission pursuant to such Sections 13(a) or 15(d) if ADT Limited were so
subject, such documents to be filed with the Commission on or prior to the
respective dates (the "Required Filing Dates") by which ADT Limited would have
been required so to file such documents if ADT Limited were so subject.  The
Company will also in any event (x) within 15 days of each Required Filing Date
(i) transmit by mail to all Holders, as their names and addresses appear in
the Security Register, without cost to such Holders and (ii) file with the
Trustee copies of the annual reports, quarterly reports and other documents
that ADT Limited would have been required to file with the Commission pursuant
to Section 13(a) or 15(d) of the Exchange Act if ADT Limited were subject to
such Sections and (y) if filing such documents by ADT Limited with the
Commission is not permitted under the Exchange Act, promptly upon written
request, authorize the Trustee to provide a copy of such documents to a
prospective holder of the Securities at the Company's cost.

         SECTION 1010.  Purchase of Securities upon Change in Control.

         (a)   Upon the occurrence of a Change in Control, each Holder of
Securities shall have the right to require the Company to repurchase such
Holder's Securities in whole or in part in integral multiples of $1,000, at a
purchase price (the "Change in Control Purchase Price") in cash in an amount
equal to 101% of the principal amount of such Securities plus accrued and
unpaid interest, if any, to the date of purchase, in accordance with the
procedures set forth in this Section 1010 (a "Change in Control Offer");
provided, however, that notwithstanding the occurrence of a Change in Control,
the Company shall not be obligated to make a Change in Control Offer with
respect to the Securities in the event that it has exercised its right to
redeem all of the Securities in accordance with Article Eleven hereof.

         (b)   Within 30 days following any Change in Control, the Company
shall send by first-class mail, postage prepaid, to the Trustee and to each
Holder of the Securities, at his address appearing in the Security Register, a
notice stating:

         (1)   that a Change in Control has occurred and that such Holder has
   the right to require the Company to repurchase such Holder's Securities at
   the Change in Control Purchase Price;

         (2)   the circumstances and relevant facts regarding such Change in
   Control (including but not limited to information with respect to pro forma
   historical income, cash flow and capitalization after giving effect to such
   Change in Control);

         (3)   a purchase date (the "Purchase Date") which shall be no earlier
   than 45 days nor later than 60 days from the date such notice is mailed or
   such later date as may be necessary for the Company to comply with the
   requirements under the Exchange Act;

         (4)   that any Security not tendered will continue to accrue
   interest; and

         (5)   the instructions a Holder must follow in order to have its
   Securities repurchased in accordance with paragraph (d) of this Section.

         (c)   Holders electing to have Securities purchased will be required
to surrender such Securities to the Company at the address specified in the
notice at least five Business Days prior to the Purchase Date.  Holders will
be entitled to withdraw their election if the Company receives, not later than
five Business Days prior to the Purchase Date, a telegram, telex, facsimile
transmission or letter setting forth the name of the Holder, the principal
amount of the Securities delivered for purchase by the Holder as to which his
election is to be withdrawn and a statement that such Holder is withdrawing
his election to have such Securities purchased.  Holders whose Securities are
purchased only in part will be issued new Securities equal in principal amount
to the unpurchased portion of the Securities surrendered.

         (d)   The Company will comply with the applicable tender offer rules,
including Rule 14e-1 under the Exchange Act, and any other applicable
securities laws or regulations in connection with a Change in Control Offer.

         [SECTIONS 1011-1020 intentionally omitted.]

         SECTION 1021.  Waiver of Certain Covenants.

         The Company and each Guarantor may omit in any particular instance to
comply with any term, provision or condition set forth in Section 804,
Sections 1007 through 1009, inclusive, or Sections 1011 through 1020, if
before or after the time for such compliance the Holders of at least a
majority in principal amount of the Outstanding Securities, by Act of such
Holders, waive such compliance in such instance with such term, provision or
condition, but no such waiver shall extend to or affect such term, provision
or condition except to the extent so expressly waived, and, until such waiver
shall become effective, the obligations of the Company and each Guarantor and
the duties of the Trustee in respect of any such term, provision or condition
shall remain in full force and effect.


                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

         SECTION 1101.  Right of Redemption.

         The Securities may be redeemed, at the election of the Company, as a
whole or from time to time in part, at any  time after August 1, 1998, subject
to the conditions and at the Redemption Prices specified in the form of
Security, together with accrued interest to the Redemption Date.

         SECTION 1102.  Applicability of Article.

         Redemption of Securities at the election of the Company or otherwise,
as permitted or required by any provision of this Indenture, shall be made in
accordance with such provision and this Article.

         SECTION 1103.  Election to Redeem; Notice to Trustee.

         The election of the Company to redeem any Securities pursuant to
Section 1101 shall be evidenced by a Board Resolution.  In case of any
redemption at the election of the Company, the Company shall, at least 60 days
prior to the Redemption Date fixed by the Company (unless a shorter notice
shall be satisfactory to the Trustee), notify the Trustee of such Redemption
Date and of the principal amount of Securities to be redeemed and shall
deliver to the Trustee such documentation and records as shall enable the
Trustee to select the Securities to be redeemed pursuant to Section 1104.

         SECTION 1104.  Selection by Trustee of Securities to Be Redeemed.

         If less than all the Securities are to be redeemed, the particular
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Securities not previously
called for redemption, by such method as the Trustee shall deem fair and
appropriate and which may provide for the selection for redemption of portions
of the principal of Securities; provided, however, that no such partial
redemption shall reduce the portion of the principal amount of a Security not
redeemed to less than $1,000.

         The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

         For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to redemption of Securities shall relate, in
the case of any Security redeemed or to be redeemed only in part, to the
portion of the principal amount of such Security which has been or is to be
redeemed.

         SECTION 1105.  Notice of Redemption.

         Notice of redemption shall be given in the manner provided for in
Section 106 not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed.

         All notices of redemption shall state:

         (1)   the Redemption Date,

         (2)   the Redemption Price,

         (3)   if less than all Outstanding Securities are to be redeemed, the
   identification (and, in the case of a partial redemption, the principal
   amounts) of the particular Securities to be redeemed,

         (4)   that on the Redemption Date the Redemption Price (together with
   accrued interest, if any, to the Redemption Date payable as provided in
   Section 1107) will become due and payable upon each such Security, or the
   portion thereof, to be redeemed, and that interest thereon will cease to
   accrue on and after said date, and

         (5)   the place or places where such Securities are to be surrendered
   for payment of the Redemption Price.

         Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

         SECTION 1106.  Deposit of Redemption Price.

         Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1003) an amount of
money sufficient to pay the Redemption Price of, and accrued interest on, all
the Securities which are to be redeemed on that date.

         SECTION 1107.  Securities Payable on Redemption Date.

         Notice of redemption having been given as aforesaid, the Securities
so to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified (together with accrued interest, if any, to
the Redemption Date), and from and after such date (unless the  Company shall
default in the payment of the Redemption Price and accrued interest) such
Securities shall cease to bear interest.  Upon surrender of any such Security
for redemption in accordance with said notice, such Security shall be paid by
the Company at the Redemption Price, together with accrued interest, if any,
to the Redemption Date; provided, however, that installments of interest whose
Stated Maturity is on or prior to the Redemption Date shall be payable to the
Holders of such Securities, or one or more Predecessor Securities, registered
as such at the close of business on the relevant Record Dates according to
their terms and the provisions of Section 307.

         If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate borne by the
Securities.

         SECTION 1108.  Securities Redeemed in Part.

         Any Security which is to be redeemed only in part shall be
surrendered at the office or agency of the Company maintained for such purpose
pursuant to Section 1002 (with, if the Company or the Trustee so requires, due
endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or such
Holder's attorney duly authorized in writing), and the Company shall execute,
and the Trustee shall authenticate and deliver to the Holder of such Security
without service charge, a new Security or Securities, of any authorized
denomination as requested by such Holder, in aggregate principal amount equal
to and in exchange for the unredeemed portion of the principal of the Security
so surrendered.


                                ARTICLE TWELVE

                      DEFEASANCE AND COVENANT DEFEASANCE

         SECTION 1201.  Company's Option to Effect Defeasance or Covenant
Defeasance.

         The Company may, at its option by Board Resolution, at any time, with
respect to the Securities, elect to have either Section 1202 or Section 1203
be applied to all Outstanding Securities upon compliance with the conditions
set forth below in this Article Twelve.

         SECTION 1202.  Defeasance and Discharge.

         Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1202, the Company shall be deemed to have been
discharged from its obligations with respect to all Outstanding Securities on
the date the conditions set forth in Section 1204 are satisfied (hereinafter,
"defeasance").  For this purpose, such defeasance means that the Company shall
be deemed to have paid and discharged the entire indebtedness represented by
the Outstanding Securities, which shall thereafter be deemed to be
"Outstanding" only for the purposes of Section 1205 and the other Sections
of this Indenture referred to in (A) and (B) below, and to have satisfied
all its other obligations under such Securities and this Indenture insofar
as such Securities are concerned (and the Trustee, at the expense of the
Company, shall execute proper instruments acknowledging the same), except
for the following which shall survive until otherwise terminated or
discharged hereunder:  (A) the rights of Holders of Outstanding Securities
to receive, solely from the trust fund described in Section 1204 and as
more fully set forth in such Section, payments in respect of the principal
of (and premium, if any, on) and interest on such Securities when such
payments are due, (B) the Company's obligations with respect to such
Securities under Sections 304, 305, 306, 1002 and 1003, (C) the rights,
powers, trusts, duties and immunities of the Trustee hereunder and (D) this
Article Twelve.  Subject to compliance with this Article Twelve, the
Company may exercise its option under this Section 1202 notwithstanding the
prior exercise of its option under Section 1203 with respect to the
Securities.

         SECTION 1203.  Covenant Defeasance.

         Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1203, the Company and the Guarantors shall be
released from their obligations under any covenant contained in Section
801(3), Section 802(3) and in Sections 1007 through 1010 with respect to
the Outstanding Securities on and after the date the conditions set forth
below are satisfied (hereinafter, "covenant defeasance"), and the
Securities shall thereafter be deemed not to be "Outstanding" for the
purposes of any direction, waiver, consent or declaration or Act of Holders
(and the consequences of any thereof) in connection with such covenants,
but shall continue to be deemed "Outstanding" for all other purposes
hereunder.  For this purpose, such covenant defeasance means that, with
respect to the Outstanding Securities, the Company and the Guarantors may
omit to comply with and shall have no liability in respect of any term,
condition or limitation set forth in any such covenant, whether directly or
indirectly, by reason of any reference elsewhere herein to any such
covenant or by reason of any reference in any such covenant to any other
provision herein or in any other document and such omission to comply shall
not constitute a Default or an Event of Default under Section 501(3), but,
except as specified above, the remainder of this Indenture and such
Securities shall be unaffected thereby.

         SECTION 1204.  Conditions to Defeasance or Covenant Defeasance.

         The following shall be the conditions to application of either
Section 1202 or Section 1203 to the Outstanding Securities:

         (1)   The Company shall irrevocably have deposited or caused to be
   deposited with the Trustee (or another trustee satisfying the requirements
   of Section 607 who shall agree to comply with the provisions of this
   Article Twelve applicable to it) as trust funds in trust for the purpose of
   making the following payments, specifically pledged as security for, and
   dedicated solely to, the benefit of the Holders of such Securities, (A)
   cash in U.S. dollars in an amount, or (B) U.S. Government Obligations which
   through the scheduled payment of principal and interest in respect thereof
   in accordance with their terms will provide, not later than one day before
   the due date of any payment, money in an amount, or (C) a combination
   thereof, sufficient, in the opinion of a nationally recognized firm of
   independent public accountants expressed in a written certification thereof
   delivered to the Trustee, to pay and discharge, and which shall be applied
   by the Trustee (or other qualifying trustee) to pay and discharge, (i) the
   principal of (and premium, if any, on) and interest on the Outstanding
   Securities on the Stated Maturity (or Redemption Date, if applicable) of
   such principal (and premium, if any) or installment of interest and (ii)
   any mandatory redemption or analogous payments applicable to the
   Outstanding Securities on the day on which such payments are due and
   payable in accordance with the terms of this Indenture and of such
   Securities; provided that the Trustee shall have been irrevocably
   instructed to apply such money or the proceeds of such U.S. Government
   Obligations to said payments with respect to the Securities; and provided
   further that upon the satisfaction of the conditions set forth in this
   Section 1204, the cash or U.S. Government Obligations deposited shall not
   be subject to the rights of the holders of Guarantor Senior Indebtedness
   pursuant to the provisions of Article Thirteen or holders of Senior
   Indebtedness pursuant to the provisions of Article Fourteen.  Before such a
   deposit, the Company may give to the Trustee, in accordance with Section
   1103 hereof, a notice of its election to redeem all of the Outstanding
   Securities at a future date in accordance with Article Eleven hereof, which
   notice shall be irrevocable.  Such irrevocable redemption notice, if given,
   shall be given effect in applying the foregoing.

         (2)   No Default or Event of Default with respect to the Securities
   shall have occurred and be continuing on the date of such deposit or,
   insofar as paragraphs (7) and (8) of Section 501 hereof are concerned, at
   any time during the period ending on the 91st or 367th day, as the case may
   be, after the date of such deposit (it being understood that this condition
   shall not be deemed satisfied until the expiration of such period).

         (3)   No event or condition shall exist that pursuant to the
   provisions of Section 1402 or 1403 would prevent the Company from making
   payments of the principal of (and premium, if any, on) or interest on the
   Securities on the date of such deposit or at any time during the period
   ending on the 91st or 367th day, as the case may be, after the date of such
   deposit (it being understood that this condition shall not be deemed
   satisfied until the expiration of such period).

         (4)   Such defeasance or covenant defeasance shall not result in a
   breach or violation of, or constitute a default under, this Indenture or
   any other material agreement or instrument to which the Company or any
   Guarantor is a party or by which the Company or any Guarantor is bound.

         (5)   In the case of an election under Section 1202, the Company
   shall have delivered to the Trustee an Opinion of Counsel stating that (x)
   the Company has received from, or there has been published by, the Internal
   Revenue Service a ruling, or (y) since the date hereof, there has been a
   change in the applicable federal income tax law, in either case to the
   effect that, and based thereon such opinion shall confirm that, the Holders
   of the Outstanding Securities will not recognize income, gain or loss for
   federal income tax purposes as a result of such defeasance and will be
   subject to federal income tax on the same amounts, in the same manner and
   at the same times as would have been the case if such defeasance had not
   occurred.

         (6)   In the case of an election under Section 1203, the Company
   shall have delivered to the Trustee an Opinion of Counsel to the effect
   that the Holders of the Outstanding Securities will not recognize income,
   gain or loss for federal income tax purposes as a result of such covenant
   defeasance and will be subject to federal income tax on the same amounts,
   in the same manner and at the same times as would have been the case if
   such covenant defeasance had not occurred.

         (7)   The Company shall have delivered to the Trustee an Officers'
   Certificate and an Opinion of Counsel, each stating that all conditions
   precedent provided for relating to either the defeasance under Section 1202
   or the covenant defeasance under Section 1203 (as the case may be) have
   been complied with.

         (8)   The Company shall have delivered to the Trustee an Opinion of
   Counsel stating that after the 91st day following the deposit, the trust
   funds will not be subject to the effect of any applicable bankruptcy,
   insolvency, reorganization or similar laws affecting creditors' rights
   generally; provided, however, that if counsel determines that it cannot
   deliver such opinion as a matter of law, the Company shall have delivered
   to the Trustee an Opinion of Counsel to the effect that after the 367th day
   following the deposit, the trust funds will not be subject to the effect of
   any applicable bankruptcy, insolvency, reorganization or similar laws
   affecting creditors' rights generally.

         (9)   The Company shall have delivered to the Trustee an Officers'
   Certificate stating that the deposit was not made by the Company with the
   intent of preferring the holders of the Securities or the Guarantees
   endorsed thereon over the other creditors of the Company or any Guarantor
   or with the intent of hindering, delaying or defrauding creditors of the
   Company or any Guarantor.

Reference in paragraphs (2) and (3) above to the number of days shall mean the
91st day if the Opinion of Counsel referred to in paragraph (8) above refers
to the 91st day and shall mean the 367th day if the Opinion of Counsel
referred to in paragraph (8) above refers to the 367th day.

         SECTION 1205.  Deposited Money and U.S. Government Obligations to Be
Held in Trust; Other Miscellaneous Provisions.

         Subject to the provisions of the last paragraph of Section 1003, all
money and U.S. Government Obligations  (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee--collectively for
purposes of this Section 1205, the "Trustee") pursuant to Section 1204 in
respect of the Outstanding Securities shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of such Securities of all sums due and to become due
thereon in respect of principal (and premium, if any) and interest, but such
money need not be segregated from other funds except to the extent required by
law.

         The Company shall pay and indemnify the Trustee against any tax, fee
or other charge imposed on or assessed against the U.S. Governmental
Obligations deposited pursuant to Section 1204 or the principal and interest
received in respect thereof other than any such tax, fee or other charge which
by law is for the account of the Holders of the Outstanding Securities.

         Anything in this Article Twelve to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1204 which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article.

         SECTION 1206.  Reinstatement.

         If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1205 by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and each Guarantor's obligations under this
Indenture, the Securities and the Guarantees shall be revived and reinstated
as though no deposit had occurred pursuant to Section 1202 or 1203, as the case
may be, until such time as the Trustee or Paying Agent is permitted to apply
all such money in accordance with Section 1205; provided, however, that if the
Company makes any payment of principal of (or premium, if any, on) or interest
on any Security following the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
such payment from the money held by the Trustee or Paying Agent.


                               ARTICLE THIRTEEN

                                   GUARANTEE

         SECTION 1301.  Guarantee.

         Subject to the provisions of this Article Thirteen, each Guarantor
hereby irrevocably and unconditionally guarantees, jointly and severally, on a
senior subordinated basis to each Holder and to the Trustee, on behalf of the
Holders, (i) the due and punctual payment of the principal of and interest on
each Security, when and as the same shall become due and payable, whether at
Stated Maturity, purchase upon Change in Control or Redemption Date, and
whether by declaration of acceleration, Change in Control, call for redemption
or purchase or otherwise, the due and punctual payment of interest on the
overdue principal of and interest, if any, on the Securities, to the extent
lawful, and the due and punctual performance of all other obligations of the
Company to the Holders or the Trustee all in accordance with the terms of such
Security and this Indenture and (ii) in the case of any extension of time of
payment or renewal of any Securities or any of such other obligations, that
the same will be promptly paid in full when due or performed in accordance
with the terms of the extension or renewal, at Stated Maturity, purchase upon
Change in Control or Redemption Date, and whether by declaration of
acceleration, Change in Control, call for redemption or purchase or otherwise
(the obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  Without limiting the generality of the foregoing, each
Guarantor's liability shall extend to all amounts that constitute part of the
Guaranteed Obligations and would be owed by the Company to the Holders or the
Trustee under the Securities and the Indenture but for the fact that they are
unenforceable or not allowable due to the existence of a bankruptcy,
reorganization or similar proceeding involving the Company.  The Guarantors
hereby agree that their obligations hereunder shall be absolute and
unconditional, irrespective of, and shall be unaffected by, any invalidity,
irregularity or unenforceability of any such Security or this Indenture, any
failure to enforce the provisions of any such Security or this Indenture, any
waiver, modification or indulgence granted to the Company with respect thereto,
by any Guaranteed Party or any other circumstances which may otherwise
constitute a legal or equitable discharge or defense of the Company or a
surety or guarantor.  The Guarantors hereby waive diligence, presentment,
filing of claims with a court in the event of merger or bankruptcy of the
Company, any right to require a  proceeding first against the Company, the
benefit of discussion, protest or notice with respect to any such Security or
the Indebtedness evidenced thereby and all demands whatsoever (except as
specified above), and covenant that this Guarantee will not be discharged as
to any such Security except by payment in full of the Guaranteed Obligations
and as provided in Sections 401, 1202 and 1320.  Each Guarantor further agrees
that, as between such Guarantor and the Guaranteed Parties, (i) the maturity
of the Guaranteed Obligations may be accelerated as provided in Article Five
for the purposes of this Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the Guaranteed
Obligations, and (ii) in the event of any declaration of acceleration of such
Guaranteed Obligations as provided in Article Five, such Guaranteed
Obligations (whether or not due and payable) shall forthwith become due and
payable by each Guarantor for the purpose of this Guarantee.  In addition,
without limiting the foregoing provisions, upon the effectiveness of an
acceleration under Article Five, the Trustee shall promptly make a demand for
payment on the Securities under each Guarantee provided for in this Article
Thirteen and not discharged.

         Each Guarantor hereby irrevocably waives any claim or other rights
that it may now or hereafter acquire against the Company that arise from the
existence, payment, performance or enforcement of such Guarantor's obligations
under this Indenture, or any other document or instrument including, without
limitation, any right of subrogation, reimbursement, exoneration,
contribution, indemnification, any right to participate in any claim or remedy
of the Guaranteed Parties against the Company, whether or not such claim,
remedy or right arises in equity, or under contract, statute or common law,
including, without limitation, the right to take or receive from the Company,
directly or indirectly, in cash or other property or in any other manner,
payment or security on account of such claim or other rights.  If any amount
shall be paid to any Guarantor in violation of the preceding sentence and the
Guaranteed Obligations shall not have been paid in full, such amount shall be
deemed to have been paid to such Guarantor for the benefit of, and held in
trust for the benefit of, the Guaranteed Parties, and shall forthwith be paid
to the Trustee.  Each Guarantor acknowledges that it will receive direct and
indirect benefits from the issuance of the Securities and that the waiver set
forth in this paragraph is knowingly made in contemplation of such benefits.

         SECTION 1302.  Obligations of the Guarantors Unconditional.

         Nothing contained in this Article Thirteen, elsewhere in this
Indenture or in any Security or in the Guarantee is intended to or shall
impair, as between the Guarantors and the Holders, the obligation of the
Guarantors, which obligations are independent of the obligations of the
Company under the Securities and this Indenture and are absolute and
unconditional, to pay to the Holders the Guaranteed Obligations as and when
the same shall become due and payable in accordance with the provisions of
this Guarantee and this Indenture, or is intended to or shall affect the
relative rights of the Holders and creditors of the Guarantors other than the
holders of Guarantor Senior Indebtedness, nor shall anything herein or therein
prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable law upon Default under this Indenture, subject to the
rights, if any, under Sections 1304 through 1317 hereof of the holders of
Guarantor Senior Indebtedness.  Each payment to be made by any Guarantor
hereunder in respect of the Guaranteed Obligations shall be payable in the
currency or currencies in which such Guaranteed Obligations are denominated.

         SECTION 1303.  Execution of Guarantee.

         To evidence its obligations under this Article Thirteen, each
Guarantor hereby agrees to execute a guarantee substantially in the form set
forth in Section 205 hereof, to be endorsed on each Security authenticated and
delivered by the Trustee and that this Indenture shall be executed on behalf
of the Guarantors by their respective Chairmen of the Board, Presidents or
Vice Presidents, under their corporate seals reproduced thereon attested by
their respective Secretaries or Assistant Secretaries.  The signature of any
of these officers on the Securities may be manual or facsimile.  Each
Guarantor hereby agrees that its Guarantee set forth in this Article Thirteen
shall remain in full force and effect notwithstanding any failure to endorse
such Guarantee on any Security.

         If an officer whose signature is on this Indenture no longer holds
that office at the time the Trustee authenticates a Security on which this
Guarantee is endorsed, the Guarantee shall be valid nevertheless.

         SECTION 1304.  Guarantees Subordinate to Guarantor Senior
Indebtedness.

         Each Guarantor covenants and agrees, and each Holder of a Security,
by his acceptance thereof, likewise covenants and agrees, that the Guarantees
shall be unsecured obligations of the Guarantors issuing such Guarantees and
each such Guarantor and Holder covenants and agrees, for the benefit of the
holders, from time to time, of Guarantor Senior Indebtedness that, to the
extent and in the manner hereinafter set forth in this Article, the
Indebtedness represented by the Guarantees and the payment pursuant to the
Guarantees by such Guarantor of the principal of (and premium, if any, on) and
interest on each and all of the Securities, and all other amounts of any kind
whatsoever payable in respect of the Securities, including, without
limitation, on account of any purchase or redemption or other acquisition of
Securities or any claim for rescission or damages (collectively, the
"Subordinated Guarantor Obligations"), are hereby expressly made subordinate
and subject in right of payment as provided in this Article to the prior
payment in full in cash or Cash Equivalents of all Guarantor Senior
Indebtedness; provided, however, that the Guarantees, the Indebtedness
represented thereby and the payment pursuant to the Guarantees by such
Guarantor of the principal of (and premium, if any, on) and interest on the
Securities in all respects shall rank pari passu with, or senior in right of
payment to, all other existing and future Indebtedness of such Guarantor that
is subordinated to Guarantor Senior Indebtedness.

         The provisions of this Article Thirteen shall constitute a continuing
offer to all Persons that, in reliance upon such provisions, become holders
of, or continue to hold Guarantor Senior Indebtedness; such provisions are
made for the benefit of the holders of Guarantor Senior Indebtedness and they
or each of them may enforce the rights of holders of Guarantor Senior
Indebtedness hereunder, subject to the terms and provisions hereof.

         SECTION 1305.  Payment over of Proceeds upon Dissolution, etc.

         In the event of (a) any insolvency or bankruptcy case or proceeding,
or any receivership, liquidation, reorganization or other similar case or
proceeding in connection therewith, relative to any Guarantor or to its
creditors, as such, or to its assets, or (b) any liquidation, dissolution or
other winding up of any Guarantor, whether voluntary or involuntary and
whether or not involving insolvency or bankruptcy, or (c) any assignment for
the benefit of creditors or any other marshalling of assets or liabilities of
any Guarantor, then and in any such event

         (1)   the holders of such Guarantor's Guarantor Senior Indebtedness
   shall be entitled to receive payment in full in cash or Cash Equivalents of
   all amounts due on or in respect of all such Guarantor Senior Indebtedness,
   or provision shall be made for such payment in a manner satisfactory to (x)
   in the case of such Guarantor's Guarantor Senior Indebtedness in respect of
   the New Bank Credit Agreement, the holders of two-thirds in principal
   amount of outstanding Indebtedness under the New Bank Credit Agreement to be
   so provided for and (y) in the case of other Designated Guarantor Senior
   Indebtedness of such Guarantor, the holders of two-thirds in principal
   amount of such other outstanding Designated Guarantor Senior Indebtedness
   to be so provided for, before the Holders of the Securities are entitled to
   receive, pursuant to the Guarantees, from any source any payment or
   distribution of any kind or character (including any payment or distribution
   which may be payable or deliverable by reason of the payment of any other
   Indebtedness of such Guarantor subordinate in right of payment to the
   payment of the Guarantees (such payment or distribution hereinafter being
   "Junior Subordinated Guarantor Payments"), but excluding (such exclusion to
   be without prejudice to the holders of Guarantor Senior Indebtedness in
   their capacity as such) any payment or distribution in the form of equity
   securities or subordinated securities of such Guarantor or any successor
   obligor with respect to the Indebtedness represented by the Guarantees
   provided for by a plan of reorganization or readjustment that, in the case
   of any such subordinated securities, are subordinated in right of payment
   to all Guarantor Senior Indebtedness of such Guarantor that may at the time
   be outstanding to at least the same extent as the Guarantees are so
   subordinated as provided in this Article (such equity securities or
   subordinated securities hereinafter being "Permitted Junior Guarantor
   Securities")) on account of Subordinated Guarantor Obligations;

         (2)   any payment or distribution of assets of such Guarantor of any
   kind or character, whether in cash, property or securities (including a
   Junior Subordinated Guarantor Payment, but excluding a payment or
   distribution in the form of Permitted Junior Guarantor Securities), by
   set-off or otherwise, to which the Holders or the Trustee would be entitled
   but for the provisions of this Article shall be paid by the liquidating
   trustee or agent or other person making such payment or distribution,
   whether a trustee in bankruptcy, a receiver or liquidating trustee or
   otherwise, directly to the holders of such Guarantor's Guarantor Senior
   Indebtedness or their representative or representatives or to the trustee
   or trustees under any indenture under which any instruments evidencing any
   of such Guarantor Senior Indebtedness may have been issued, ratably
   according to the aggregate amounts remaining unpaid on account of such
   Guarantor Senior Indebtedness held or represented by each, to the extent
   necessary to make payment in full in cash or Cash Equivalents of all such
   Guarantor Senior Indebtedness remaining unpaid, after giving effect to any
   concurrent payment or distribution to the holders of such Guarantor Senior
   Indebtedness; and

         (3)   in the event that, notwithstanding the foregoing provisions of
   this Section, the Trustee or the Holder of any Security shall have received
   any payment or distribution of assets of such Guarantor of any kind or
   character, whether in cash, property or securities, pursuant to the
   Guarantees in respect of the Subordinated Guarantor Obligations before all
   of such Guarantor's Guarantor Senior Indebtedness is paid in full in cash or
   Cash Equivalents or payment thereof provided for in a manner satisfactory
   to (x) in the case of such Guarantor's Guarantor Senior Indebtedness in
   respect of the New Bank Credit Agreement, the holders of two-thirds in
   principal amount of outstanding Indebtedness under the New Bank Credit
   Agreement so provided for and (y) in the case of other Designated Guarantor
   Senior Indebtedness of such Guarantor, the holders of two-thirds in
   principal amount of such other outstanding Designated Guarantor Senior
   Indebtedness so provided for, then and in such event such payment or
   distribution (including a Junior Subordinated Guarantor Payment, but
   excluding a payment or distribution in the form of Permitted Junior
   Guarantor Securities) shall be held in trust for the benefit of the holders
   of such Guarantor's Guarantor Senior Indebtedness and shall be paid over or
   delivered forthwith to the trustee in bankruptcy, receiver, liquidating
   trustee, custodian, assignee, agent or other Person making payment or
   distribution of assets of such Guarantor for application to the payment of
   all such Guarantor Senior Indebtedness remaining unpaid, to the extent
   necessary to pay all such Guarantor Senior Indebtedness in full in cash or
   Cash Equivalents, after giving effect to any concurrent payment or
   distribution to or for the holders of such Guarantor Senior Indebtedness.

         The consolidation, amalgamation, continuance or redomestication of
ADT Limited or consolidation of any Subsidiary of ADT Limited with, or the
merger of ADT Limited or any Subsidiary of ADT Limited into, another Person or
the liquidation or dissolution of ADT Limited or any Subsidiary of ADT Limited
following the conveyance, transfer or lease of all or substantially all of its
properties and assets to  another Person, in each case, upon the terms and
conditions set forth in Article Eight hereof shall not be deemed a
dissolution, winding up, liquidation, reorganization, assignment for the
benefit of creditors or marshalling of assets and liabilities of any Guarantor
for the purposes of this Section if the Person formed by such consolidation,
amalgamation, continuance or redomestication of ADT Limited or consolidation of
any Subsidiary of ADT Limited or into which ADT Limited or any Subsidiary of
ADT Limited is merged or the Person which acquires by conveyance, transfer or
lease all or substantially all of such properties and assets, as the case may
be, shall, as a part of such consolidation, amalgamation, continuance,
redomestication, merger, conveyance, transfer or lease, comply with the
conditions set forth in Article Eight.

         SECTION 1306.  Suspension of Payment When Designated Guarantor Senior
Indebtedness in Default.

         (a)   Unless Section 1305 shall be applicable, upon the occurrence of
a Guarantor Payment Default with respect to any Guarantor, then no payment or
distribution of any kind or character, whether in cash, property or
securities, shall be made by or on behalf of such Guarantor (other than
payments made on an arm's-length basis by any Person that is not an Affiliate
of such Guarantor) on account of such Guarantor's Subordinated Guarantor
Obligations unless and until such Guarantor Payment Default shall have been
cured or waived in writing or shall have ceased to exist or such Guarantor
Senior Indebtedness shall have been discharged in full in cash or Cash
Equivalents, after which such Guarantor shall resume making any and all
required payments in respect of its obligations under the Guarantees,
including any missed payments.

         (b)   Unless Section 1305 shall be applicable, upon the occurrence of
a Guarantor Non-payment Default with respect to any Guarantor, then no payment
or distribution of any kind or character, whether in cash, property or
securities, shall be made by or on behalf of such Guarantor (other than
payments made on an arm's-length basis by any Person that is not an Affiliate
of such Guarantor) on account of such Guarantor's Subordinated Guarantor
Obligations for the period or periods specified below (a "Guarantor Payment
Blockage Period").  A Guarantor Payment Blockage Period shall commence on the
date of receipt by the Trustee of written notice of such occurrence from the
Agent (or any other representative of holders of Designated Guarantor Senior
Indebtedness) or if such Guarantor Non-payment Default results from the
acceleration of the Securities, on the date of such acceleration and shall end
on the earlier of (x) 179 days (if such event of default is with respect to
Designated  Guarantor Senior Indebtedness under the New Bank Credit Agreement)
or 119 days (if such event of default is with respect to any other Designated
Guarantor Senior Indebtedness) from receipt of such written notice by the
Trustee, (y) the date on which such Guarantor Non-payment Default is cured,
waived or ceases to exist or on which such Designated Guarantor Senior
Indebtedness is discharged in full in cash or Cash Equivalents or (z) such
Guarantor Payment Blockage Period shall have been terminated by written notice
to such Guarantor or the Trustee from the Agent or such other representative
initiating such Guarantor Payment Blockage Period, after which, in each case,
such Guarantor, subject to the subordination provisions described above and
the existence of a Guarantor Payment Default,  shall resume making any and all
required payments in respect of its obligations under the Guarantees,
including any missed payments.  Only one Guarantor Payment Blockage Period may
be commenced within any consecutive 360-day period; provided that, subject to
the limitations set forth in the next sentence, the commencement of a Guarantor
Payment Blockage Period by the representatives for, or the holders of,
Designated Guarantor Senior Indebtedness other than under the New Bank Credit
Agreement or as a result of an acceleration of the Securities shall not bar
the commencement of another Guarantor Payment Blockage Period by the Agent
within such consecutive 360-day period.  Notwithstanding anything in this
Indenture to the contrary, any Guarantor Payment Blockage Period shall be
terminated so that there shall be 180 consecutive days in any 360-day period
in which no Guarantor Payment Blockage Period is in effect.  No event of
default with respect to the Designated Guarantor Senior Indebtedness
initiating a Guarantor Payment Blockage Period (or on whose behalf a Guarantor
Payment Blockage Period was initiated) that existed or was continuing on the
date of the commencement of such Guarantor Payment Blockage Period will be, or
can be made, the basis for the commencement of a second Guarantor Payment
Blockage Period on behalf of such Designated Guarantor Senior Indebtedness
whether or not within a period of 360 consecutive days, unless such event of
default shall have been cured or waived for a period of not less than 90
consecutive days subsequent to the commencement of the initial Guarantor
Payment Blockage Period (it being acknowledged that any subsequent action or
breach that would give rise to a Guarantor Non-payment Default pursuant to any
provision under which a Guarantor Non-payment Default previously existed or
was continuing shall constitute a new Guarantor Non-payment Default for this
purpose, provided that, in the case of a breach of a particular financial
covenant, the Guarantors, the Company and the other Restricted Subsidiaries
subject to such covenant shall have  been in compliance therewith for at least
one full measurement period commencing after the date of commencement of such
Guarantor Payment Blockage Period).  In no event will a Guarantor Payment
Blockage Period extend beyond 179 days.

         (c)   In the event that the Trustee or any Holder of the Securities
receives any payment prohibited by the foregoing, then such payment shall be
held in trust for the holders of Guarantor Senior Indebtedness and shall be
paid over forthwith to the holders of such Guarantor's Guarantor Senior
Indebtedness or their representative or representatives or to the trustee or
trustees under any indenture under which any instruments evidencing any of
such Guarantor Senior Indebtedness may have been issued.

         SECTION 1307.  Payment Permitted If No Default.

         Nothing contained in this Article or elsewhere in this Indenture or
in any of the Securities or Guarantees shall prevent any Guarantor, at any
time except during the pendency of any case, proceeding, dissolution,
liquidation or other winding up, assignment for the benefit of creditors or
other marshalling of assets and liabilities of such Guarantor referred to in
Section 1305 or under the conditions described in Section 1306, from making
payments at any time of principal of (and premium, if any, on) or interest on
the Securities.

         SECTION 1308.  Subrogation to Rights of Holders of Guarantor Senior
Indebtedness.

         Subject to the payment in full in cash or Cash Equivalents of all
Guarantor Senior Indebtedness, the Holders of the Securities shall be
subrogated to the rights of the holders of such Guarantor Senior Indebtedness
to receive payments and distributions of cash, property and securities
applicable to the Guarantor Senior Indebtedness until the Subordinated
Guarantor Obligations shall be paid in full.  For purposes of such
subrogation, no payments or distributions to the holders of Guarantor Senior
Indebtedness of any cash, property or securities to which the Holders of the
Securities or the Trustee would be entitled except for the provisions of this
Article, and no payments over pursuant to the provisions of this Article to
the holders of Guarantor Senior Indebtedness by Holders of the Securities or
the Trustee, shall, as among the Guarantors, their respective creditors other
than holders of Guarantor Senior Indebtedness, and the Holders of the
Securities, be deemed to be a payment or distribution by any Guarantor to or
on account of the Guarantor Senior Indebtedness.

         SECTION 1309.  Trustee to Effectuate Subordination.

         Each Holder of a Security by his acceptance thereof authorizes and
directs the Trustee on his behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article and
appoints the Trustee his attorney-in-fact for any and all such purposes.  If
upon any dissolution, winding up or reorganization of any Guarantor, whether
in bankruptcy, insolvency, receivership proceedings or otherwise, the Trustee
does not file a claim in such proceedings prior to five Business Days before
the expiration of the time to file such claim, the holders of Guarantor Senior
Indebtedness or the Agent may file such a claim on behalf of the Holders of
the Securities.

         SECTION 1310.  No Waiver of Subordination Provisions.

         (a)   No right of any present or future holder of any Guarantor Senior
Indebtedness to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
any Guarantor or by any act or failure to act, in good faith, by any such
holder, or by any non-compliance by any Guarantor with the terms, provisions
and covenants of this Indenture, regardless of any knowledge thereof any such
holder may have or be otherwise charged with.

         (b)   Without in any way limiting the generality of paragraph (a) of
this Section, the holders of Guarantor Senior Indebtedness may, at any time
and from time to time, without the consent of or notice to the Trustee or the
Holders of the Securities, without incurring responsibility to the Holders of
the Securities and without impairing or releasing the subordination provided
in this Article or the obligations hereunder of the Holders of the Securities
to the holders of Guarantor Senior Indebtedness, do any one or more of the
following:  (1) change the manner, place or terms of payment or extend the
time of payment of, or renew or alter, Guarantor Senior Indebtedness or any
instrument evidencing the same or any agreement under which Guarantor Senior
Indebtedness is outstanding; (2) sell, exchange, release or otherwise deal
with any property pledged, mortgaged or otherwise securing Guarantor Senior
Indebtedness; (3) release any Person liable in any manner for the collection
of Guarantor Senior Indebtedness; and (4) exercise or refrain from exercising
any rights against any Guarantor and any other Person.

         SECTION 1311.  Notice to Trustee.

         (a)   Each Guarantor shall give prompt written notice to the Trustee
of any fact known to such Guarantor which would prohibit the making of any
payment to or by the Trustee in respect of the Securities.  Notwithstanding
the provisions of this Article or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts
which would prohibit the making of any payment to or by the Trustee in respect
of the Guarantees, unless and until the Trustee shall have received written
notice thereof from any Guarantor, the Company, the Agent or a holder of
Guarantor Senior Indebtedness or Senior Indebtedness or from any trustee,
fiduciary or agent therefor; and, prior to the receipt of any such written
notice, the Trustee, subject to TIA Sections 315(a) through 315(d), shall be
entitled in all respects to assume that no such facts exist; provided,
however, that, if the Trustee shall not have received the notice provided for
in this Section at least three Business Days prior to the date upon which by
the terms hereof any money may become payable by any Guarantor for any purpose
(including, without limitation, the payment of the principal of (and premium,
if any, on) or interest on any Security), then, anything herein contained to
the contrary notwithstanding, the Trustee shall have full power and authority
to receive such money and to apply the same to the purpose for which such
money was received and shall not be affected by any notice to the contrary
which may be received by it within three Business Days prior to such date.

         (b)   Subject to TIA Sections 315(a) through 315(d), the Trustee
shall be entitled to rely on the delivery to it of a written notice by a
Person representing himself to be a holder of Guarantor Senior Indebtedness
(or a trustee, fiduciary or agent therefor) to establish that such notice has
been given by a holder of Guarantor Senior Indebtedness (or a trustee,
fiduciary or agent therefor).  In the event that the Trustee determines in
good faith that further evidence is required with respect to the right of any
Person as a holder of Guarantor Senior Indebtedness to participate in any
payment or distribution pursuant to this Article, the Trustee may request such
Person to furnish evidence to the reasonable satisfaction of the Trustee as to
the amount of Guarantor Senior Indebtedness held by such Person, the extent to
which such Person is entitled to participate in such payment or distribution
and any other facts pertinent to the rights of such Person under this Article
and, if such evidence is not furnished, the Trustee may defer any payment to
such Person pending judicial determination as to the right of such Person to
receive such payment.

         SECTION 1312.  Reliance on Judicial Order or Certificate of
Liquidating Agent.

         Upon any payment or distribution of assets of any Guarantor referred
to in this Article, the Trustee, subject to TIA Sections 315(a) through
315(d), and the Holders of the Securities shall be entitled to rely upon any
order or decree entered by any court of competent jurisdiction in which such
insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, receiver, liquidating trustee,
custodian, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the Holders of
Securities, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of such Guarantor's
Guarantor Senior Indebtedness and other indebtedness of such Guarantor, the
amount thereof or payable thereon, the amount or amounts paid or distributed
thereon and all other facts pertinent thereto or to this Article.

         SECTION 1313.  Rights of Trustee As a Holder of Guarantor Senior
Indebtedness; Preservation of Trustee's Rights.

         The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Guarantor Senior
Indebtedness which may at any time be held by it, to the same extent as any
other holder of Guarantor Senior Indebtedness, and nothing in this Indenture
shall deprive the Trustee of any of its rights as such holder.  Nothing in
this Article shall apply to claims of, or payments to, the Trustee under or
pursuant to Section 606.

         SECTION 1314.  Article Applicable to Paying Agents.

         In case at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying
Agent within its meaning as fully for all intents and purposes as if such
Paying Agent were named in this Article in addition to or in place of the
Trustee; provided, however, that Sections 1311(a) and 1313 shall not apply to
the Company or any Affiliate of the Company if it or such Affiliate acts as
Paying Agent.

         SECTION 1315.  No Suspension of Remedies.

         Nothing contained in this Article shall limit the right of the
Trustee or the Holders of Securities to take any action to accelerate the
maturity of the Securities pursuant to Article Five or to pursue any rights or
remedies hereunder or under applicable law.

         SECTION 1316.  Trust Moneys Not Subordinated.

         Notwithstanding anything contained herein to the contrary, payments
from cash or the proceeds of U.S. Government Obligations held in trust under
Article Twelve hereof by the Trustee (or other qualifying trustee) and which
were deposited in accordance with the terms of Article Twelve hereof and not
in violation of Section 1306 hereof for the payment of principal of (and
premium, if any, on) and interest on the Securities shall not be subordinated
to the prior payment of any Guarantor Senior Indebtedness or subject to the
restrictions set forth in this Article Thirteen, and none of the Holders shall
be obligated to pay over any such amount to any Guarantor or any holder of
such Guarantor's Guarantor Senior Indebtedness or any other creditor of such
Guarantor.

         SECTION 1317.  Trustee's Relation to Guarantor Senior Indebtedness.

         With respect to the holders of Guarantor Senior Indebtedness, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article, and no implied
covenants or obligations with respect to the holders of Guarantor Senior
Indebtedness shall be read into this Article against the Trustee.  The Trustee
shall not be deemed to owe any fiduciary duty to the holders of Guarantor
Senior Indebtedness and the Trustee shall not be liable to any holder of
Guarantor Senior Indebtedness if it shall mistakenly in the absence of gross
negligence or wilful misconduct pay over or deliver to Holders, the Company or
any other Person moneys or assets to which any holder of Guarantor Senior
Indebtedness shall be entitled by virtue of this Article or otherwise.

         SECTION 1318.  Withholding.

         All payments made by a Guarantor with respect to the Guarantees will
be made without withholding or deduction for, or on account of, any present or
future taxes, duties, assessments or governmental charges of whatever nature
imposed or levied by or on behalf of Bermuda or any other country (other than
the United States) or any political  subdivision thereof or any authority
therein or thereof, having power to tax, unless the withholding or deduction of
such taxes, duties, assessments or governmental charges is then required by
law.  In the event that Bermuda or any other country (other than the United
States) or any political subdivision thereof or any authority therein or
thereof, imposes any such withholding or deduction on (i) any payments made by
a Guarantor with respect to the Guarantees or (ii) any net proceeds on the sale
to or exchange with any Guarantor of the Securities, such Guarantor will pay
such additional amounts (the "Additional Amounts") as may be necessary in
order that the net amounts received in respect of such payments or sale or
exchange by the Holders of the Securities or the Trustee, as the case may be,
after such withholding or deduction shall equal the respective amounts that
would have been received in respect of such payments or sale or exchange in
the absence of such withholding or deduction; except that no such Additional
Amounts shall be payable with respect to any Security held by or on behalf of
a holder who is liable for such taxes, duties, assessments or governmental
charges in respect of such Security by reason of his being a citizen or
resident of, or carrying on a business in, Bermuda or the country of residence
of any Guarantor.  Notwithstanding the foregoing, a Guarantor making a payment
on the Securities pursuant to the Guarantee shall not be required to pay any
Additional Amounts if (i) the beneficial holder of a Security receives by
certified mail (evidenced by a return receipt signed by such beneficial
holder) (A) written notice from such Guarantor no less than 60 days in advance
of making such payment and (B) the appropriate forms or instructions necessary
to enable such beneficial holder to certify or document the availability of an
exemption from, or reduction of, the withholding or deduction of such taxes
under applicable law, which such instructions shall clearly specify that
Additional Amounts hereunder may not be paid if such forms are not completed
by such beneficial holder, and (ii) the Guarantor that would otherwise have to
pay such Additional Amounts establishes to the satisfaction of the Trustee
that the obligation to pay such Additional Amounts would not have arisen but
for the failure of such beneficial holder to (A) duly complete such forms as
were actually received by such beneficial holder or respond to such
instructions and (B) provide to such Guarantor such duly completed forms or
responses to instructions.  Without prejudice to the survival of any other
agreement of the Guarantors hereunder, the agreements and obligations of the
Guarantors contained in this Section 1318 shall survive the payment in full of
the Guaranteed Obligations and all other amounts payable under this Guarantee.

         SECTION 1319.  Release of Guarantee.

         (a)   Concurrently with the payment in full of all of the Guaranteed
Obligations, the Guarantors shall be released from and relieved of their
obligations under this Article Thirteen.  Upon the delivery by the Company to
the Trustee of an Officers' Certificate and, if requested by the Trustee, an
Opinion of Counsel to the effect that the transaction giving rise to the
release of such obligations was made by the Company in accordance with the
provisions of this Indenture and the Securities, the Trustee shall execute any
documents reasonably required in order to evidence the release of the
Guarantors from their obligations.  If any of the Guaranteed Obligations are
revived and reinstated after the termination of this Guarantee, then all of the
obligations of the Guarantors under this Guarantee shall be revived and
reinstated as if this Guarantee had not been terminated until such time as the
Guaranteed Obligations are paid in full, and the Guarantors shall enter into
an amendment to this Guarantee, reasonably satisfactory to the Trustee,
evidencing such revival and reinstatement.

         (b)   Upon (i) the sale or disposition of all of the Common Stock of
a Subsidiary Guarantor (by merger or otherwise) to a Person other than the
Company, ADT Limited or another Restricted Subsidiary and which sale or
disposition is otherwise in compliance with the terms of this Indenture, or
(ii) the unconditional and full release in writing of such Subsidiary
Guarantor from all Subordinated Indebtedness (other than Subordinated
Indebtedness of the Company, ADT  Limited or any other Restricted Subsidiary
owing to ADT Limited, the Company or any other Wholly Owned Restricted
Subsidiary, as the case may be), such Subsidiary Guarantor shall be deemed
released from all obligations under this Article Thirteen; provided, however,
that any such termination upon such sale or disposition shall occur if and
only to the extent that all obligations of such Subsidiary Guarantor under all
of its guarantees of, and under all of its pledges of assets or other security
interests which secure, Indebtedness of the Company, ADT Limited or any
Restricted Subsidiary shall also terminate upon such sale or disposition.
Upon the delivery by the Company to the Trustee of an Officers' Certificate
and, if requested by the Trustee, an Opinion of Counsel to the effect that the
transaction giving rise to the release of such obligations was made in
accordance with the provisions of this Indenture and the Securities, the
Trustee shall execute any documents reasonably required in order to evidence
the release of such Subsidiary Guarantor from its obligations.  Any Subsidiary
Guarantor not so released remains liable for the full amount of principal of
and interest on the Securities as provided in this Article Thirteen.


                               ARTICLE FOURTEEN

                          SUBORDINATION OF SECURITIES

         SECTION 1401.  Securities Subordinate to Senior Indebtedness.

         The Company covenants and agrees, and each Holder of a Security, by
his acceptance thereof, likewise covenants and agrees, for the benefit of the
holders, from time to time, of Senior Indebtedness that, to the extent and in
the manner hereinafter set forth in this Article, the Indebtedness represented
by the Securities and the payment of the principal of (and premium, if any,
on) and interest on each and all of the Securities, and all other amounts of
any kind whatsoever payable in respect of the Securities, including, without
limitation, on account of any purchase or redemption or other acquisition of
Securities or any claim for rescission or damages (collectively, the
"Subordinated Obligations"), are hereby expressly made subordinate and subject
in right of payment as provided in this Article to the prior payment in full
in cash or Cash Equivalents of all Senior Indebtedness; provided, however,
that the Securities, the Indebtedness represented thereby and the payment of
the  principal of (and premium, if any, on) and interest on the Securities in
all respects shall rank pari passu with, or senior in right of payment to, all
other existing and future Indebtedness of the Company that is subordinated to
Senior Indebtedness.

         The provisions of this Article Fourteen shall constitute a continuing
offer to all Persons that, in reliance upon such provisions, become holders
of, or continue to hold Senior Indebtedness; such provisions are made for the
benefit of the holders of Senior Indebtedness and they or each of them may
enforce the rights of holders of Senior Indebtedness hereunder, subject to the
terms and provisions hereof.

         SECTION 1402.  Payment over of Proceeds upon Dissolution, etc.

         In the event of (a) any insolvency or bankruptcy case or proceeding,
or any receivership, liquidation, reorganization or other similar case or
proceeding in connection therewith, relative to the Company or to its
creditors, as such, or to its assets, or (b) any liquidation, dissolution or
other winding up of the Company, whether voluntary or involuntary and whether
or not involving insolvency or bankruptcy, or (c) any assignment for the
benefit of creditors or any other marshalling of assets or liabilities of the
Company, then and in any such event

         (1)   the holders of Senior Indebtedness shall be entitled to receive
   payment in full in cash or Cash Equivalents of all amounts due on or in
   respect of all Senior Indebtedness, or provision shall be made for such
   payment in a manner satisfactory to (x) in the case of Senior Indebtedness
   in respect of the New Bank Credit Agreement, the holders of two-thirds in
   principal amount of outstanding Indebtedness under the New Bank Credit
   Agreement to be so provided for and (y) in the case of other Designated
   Senior Indebtedness, the holders of two-thirds in principal amount of such
   other outstanding Designated Senior Indebtedness to be so provided for,
   before the Holders of the Securities are entitled to receive from any
   source any payment or distribution of any kind or character (including any
   payment or distribution which may be payable or deliverable by reason of
   the payment of any other Indebtedness of the Company subordinate in right of
   payment to the payment of the Securities (such payment or distribution
   hereinafter being "Junior Subordinated Payments"), but excluding (such
   exclusion to be without prejudice to the holders of Senior Indebtedness in
   their capacity as such) any payment or distribution in the form of equity
   securities or subordinated securities of the Company or any successor
   obligor with respect to the Indebtedness represented by the Securities
   provided for by a plan of reorganization or readjustment that, in the case
   of any such subordinated securities, are subordinated in right of payment
   to all Senior Indebtedness that may at the time be outstanding to at least
   the same extent as the Securities are so subordinated as provided in this
   Article (such equity securities or subordinated securities hereinafter being
   "Permitted Junior Securities")) on account of Subordinated Obligations;

         (2)   any payment or distribution of assets of the Company of any
   kind or character, whether in cash, property or securities (including a
   Junior Subordinated Payment, but excluding a payment or distribution in the
   form of Permitted Junior Securities), by set-off or otherwise, to which the
   Holders or the Trustee would be entitled but for the provisions of this
   Article shall be paid by the liquidating trustee or agent or other person
   making such payment or distribution, whether a trustee in bankruptcy, a
   receiver or liquidating trustee or otherwise, directly to the holders of
   Senior Indebtedness or their representative or representatives or to the
   trustee or trustees under any indenture under which any instruments
   evidencing any of such Senior Indebtedness may have been issued, ratably
   according to the aggregate amounts remaining unpaid on account of the
   Senior Indebtedness held or represented by each, to the extent necessary to
   make payment in full in cash or Cash Equivalents of all Senior Indebtedness
   remaining unpaid, after giving effect to any concurrent payment or
   distribution to the holders of such Senior Indebtedness; and

         (3)   in the event that, notwithstanding the foregoing provisions of
   this Section, the Trustee or the Holder of any Security shall have received
   any payment or distribution of assets of the Company of any kind or
   character, whether in cash, property or securities, in respect of the
   Subordinated Obligations before all Senior Indebtedness is paid in full in
   cash or Cash Equivalents or payment thereof provided for in a manner
   satisfactory to (x) in the case of Senior Indebtedness in respect of the
   New Bank Credit Agreement, the holders of two-thirds in principal amount of
   outstanding Indebtedness under the New Bank Credit Agreement so provided
   for and (y) in the case of other Designated Senior Indebtedness, the
   holders of two-thirds in principal amount of such other outstanding
   Designated Senior Indebtedness so provided for, then and in such event such
   payment or distribution (including a Junior Subordinated Payment, but
   excluding a payment or distribution in the form of Permitted Junior
   Securities) shall be held in trust for the benefit of the holders of Senior
   Indebtedness and shall be paid over or delivered forthwith to the trustee
   in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent or
   other Person making payment or distribution of assets of the Company for
   application to the payment of all Senior Indebtedness remaining unpaid, to
   the extent necessary to pay all Senior Indebtedness in full in cash or Cash
   Equivalents, after giving effect to any concurrent payment or distribution
   to or for the holders of Senior Indebtedness.

         The consolidation, amalgamation, continuance or redomestication of
ADT Limited or consolidation of any Subsidiary of ADT Limited with, or the
merger of ADT Limited or any Subsidiary of ADT Limited into, another Person or
the liquidation or dissolution of ADT Limited or any Subsidiary of ADT Limited
following the conveyance, transfer or lease of all or substantially all of its
properties and assets to another Person, in each case, upon the terms and
conditions set forth in Article Eight hereof shall not be deemed a
dissolution, winding up, liquidation, reorganization, assignment for the
benefit of creditors or marshalling of assets and liabilities of the Company
for the purposes of this Section if the Person formed by such consolidation,
amalgamation, continuance or redomestication of ADT Limited or consolidation of
any Subsidiary of ADT Limited or into which ADT Limited or any Subsidiary of
ADT Limited is merged or the Person which acquires by conveyance, transfer or
lease all or substantially all of such properties and assets, as the case may
be, shall, as a part of such consolidation, amalgamation, continuance,
redomestication, merger, conveyance, transfer or lease, comply with the
conditions set forth in Article Eight.

         SECTION 1403.  Suspension of Payment When Designated Senior
Indebtedness in Default.

         (a)   Unless Section 1402 shall be applicable, upon the occurrence of
a Payment Default, then no payment or distribution of any kind or character,
whether in cash, property or securities, shall be made by or on behalf of the
Company or any Guarantor (other than payments made on an arm's-length basis by
any Person that is not an Affiliate of the Company or such Guarantor) on
account of the Subordinated Obligations unless and until such Payment Default
shall have  been cured or waived in writing or shall have ceased to exist or
such Senior Indebtedness shall have been discharged in full in cash or Cash
Equivalents, after which the Company and the Guarantors shall resume making
any and all required payments in respect of the Securities, including any
missed payments.

         (b)   Unless Section 1402 shall be applicable, upon the occurrence of
a Non-payment Default, then no payment or distribution of any kind or
character, whether in cash, property or securities, shall be made by or on
behalf of the Company or any Guarantor (other than payments made on an
arm's-length basis by any Person that is not an Affiliate of the Company or
such Guarantor) on account of the Subordinated Obligations for the period or
periods specified below (a "Payment Blockage Period").  A Payment Blockage
Period shall commence on the date of receipt by the Trustee of written notice
of such occurrence from the Agent (or any other representative of holders of
Designated Senior Indebtedness) or if such Non-payment Default results from
the acceleration of the Securities, on the date of such acceleration and shall
end on the earlier of (x) 179 days (if such event of default is with respect
to Designated Senior Indebtedness under the New Bank Credit Agreement) or 119
days (if such event of default is with respect to any other Designated Senior
Indebtedness) from receipt of such written notice by the Trustee, (y) the date
on which such Non-payment Default is cured, waived or ceases to exist or on
which such Designated Senior Indebtedness is discharged in full in cash or
Cash Equivalents or (z) such Payment Blockage Period shall have been
terminated by written notice to the Company or the Trustee from the Agent or
such other representative initiating such Payment Blockage Period, after
which, in each case, the Company and the Guarantors, subject to the
subordination provisions described above and the existence of a Payment
Default,  shall resume making any and all required payments in respect of the
Securities, including any missed payments.  Only one Payment Blockage Period
may be commenced within any consecutive 360-day period; provided that, subject
to the limitations set forth in the next sentence, the commencement of a
Payment Blockage Period by the representatives for, or the holders of,
Designated Senior Indebtedness other than under the New Bank Credit Agreement
or as a result of an acceleration of the Securities shall not bar the
commencement of another Payment Blockage Period by the Agent within such
consecutive 360-day period.  Notwithstanding anything in this Indenture to the
contrary, any Payment Blockage Period shall be terminated so that there shall
be 180 consecutive days in any 360-day period in which no Payment Blockage
Period is in effect.  No event of default with respect to the Designated
Senior Indebtedness initiating  a Payment Blockage Period (or on whose behalf
a Payment Blockage Period was initiated) that existed or was continuing on the
date of the commencement of such Payment Blockage Period will be, or can be
made, the basis for the commencement of a second Payment Blockage Period on
behalf of such Designated Senior Indebtedness whether or not within a period
of 360 consecutive days, unless such event of default shall have been cured or
waived for a period of not less than 90 consecutive days subsequent to the
commencement of the initial Payment Blockage Period (it being acknowledged
that any subsequent action or breach that would give rise to a Non-payment
Default pursuant to any provision under which a Non-payment Default previously
existed or was continuing shall constitute a new Non-payment Default for this
purpose, provided that, in the case of a breach of a particular financial
covenant, the Company, ADT Limited and the other Restricted Subsidiaries
subject to such covenant shall have been in compliance therewith for at least
one full measurement period commencing after the date of commencement of such
Payment Blockage Period).  In no event will a Payment Blockage Period extend
beyond 179 days.

         (c)   In the event that the Trustee or any Holder of the Securities
receives any payment prohibited by the foregoing, then such payment shall be
held in trust for the holders of Senior Indebtedness and shall be paid over
forthwith to the holders of Senior Indebtedness or their representative or
representatives or to the trustee or trustees under any indenture under which
any instruments evidencing any of such Senior Indebtedness may have been
issued.

         SECTION 1404.  Payment Permitted If No Default.

         Nothing contained in this Article or elsewhere in this Indenture or
in any of the Securities shall prevent the Company, at any time except during
the pendency of any case, proceeding, dissolution, liquidation or other
winding up, assignment for the benefit of creditors or other marshalling of
assets and liabilities of the Company referred to in Section 1402 or under the
conditions described in Section 1403, from making payments at any time of
principal of (and premium, if any, on) or interest on the Securities.

         SECTION 1405.  Subrogation to Rights of Holders of Senior
Indebtedness.

         Subject to the payment in full in cash or Cash Equivalents of all
Senior Indebtedness, the Holders of the Securities shall be subrogated to the
rights of the holders of such Senior Indebtedness to receive payments and
distributions of cash, property and securities applicable to  the Senior
Indebtedness until the Subordinated Obligations shall be paid in full.  For
purposes of such subrogation, no payments or distributions to the holders of
Senior Indebtedness of any cash, property or securities to which the Holders
of the Securities or the Trustee would be entitled except for the provisions
of this Article, and no payments over pursuant to the provisions of this
Article to the holders of Senior Indebtedness by Holders of the Securities or
the Trustee, shall, as among the Company, the Guarantors, their respective
creditors other than holders of Senior Indebtedness, and the Holders of the
Securities, be deemed to be a payment or distribution by the Company or any
Guarantor to or on account of the Senior Indebtedness.

         SECTION 1406.  Provisions Solely to Define Relative Rights.

         The provisions of this Article are and are intended solely for the
purpose of defining the relative rights of the Holders of the Securities on
the one hand and the holders of Senior Indebtedness on the other hand.
Nothing contained in this Article or elsewhere in this Indenture or in the
Securities is intended to or shall (a) impair, as between the Company, the
Guarantors and the Holders of the Securities, the obligation of the Company
and the Guarantors, which is absolute and unconditional, to pay to the Holders
of the Securities the Subordinated Obligations as and when the same shall
become due and payable in accordance with their terms; or (b) affect the
relative rights against the Company and the Guarantors of the Holders of the
Securities and creditors of the Company and the Guarantors other than the
holders of Senior Indebtedness; or (c) prevent the Trustee or the Holder of
any Security from exercising all remedies otherwise permitted by applicable
law upon Default under this Indenture, subject to the rights, if any, under
this Article of the holders of Senior Indebtedness.

         SECTION 1407.  Trustee to Effectuate Subordination.

         Each Holder of a Security by his acceptance thereof authorizes and
directs the Trustee on his behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article and
appoints the Trustee his attorney-in-fact for any and all such purposes.  If
upon any dissolution, winding up or reorganization of the Company, whether in
bankruptcy, insolvency, receivership proceedings or otherwise, the Trustee
does not file a claim in such proceedings prior to five Business Days before
the expiration of the time to file such claim, the holders of Senior
Indebtedness or the Agent may file such a claim on behalf of the Holders of
the Securities.

         SECTION 1408.  No Waiver of Subordination Provisions.

         (a)   No right of any present or future holder of any Senior
Indebtedness to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
the Company or any Guarantor or by any act or failure to act, in good faith,
by any such holder, or by any non-compliance by the Company or any Guarantor
with the terms, provisions and covenants of this Indenture, regardless of any
knowledge thereof any such holder may have or be otherwise charged with.

         (b)   Without in any way limiting the generality of paragraph (a) of
this Section, the holders of Senior Indebtedness may, at any time and from
time to time, without the consent of or notice to the Trustee or the Holders
of the Securities, without incurring responsibility to the Holders of the
Securities and without impairing or releasing the subordination provided in
this Article or the obligations hereunder of the Holders of the Securities to
the holders of Senior Indebtedness, do any one or more of the following:  (1)
change the manner, place or terms of payment or extend the time of payment of,
or renew or alter, Senior Indebtedness or any instrument evidencing the same
or any agreement under which Senior Indebtedness is outstanding; (2) sell,
exchange, release or otherwise deal with any property pledged, mortgaged or
otherwise securing Senior Indebtedness; (3) release any Person liable in any
manner for the collection of Senior Indebtedness; and (4) exercise or refrain
from exercising any rights against the Company and any other Person.

         SECTION 1409.  Notice to Trustee.

         (a)   The Company shall give prompt written notice to the Trustee of
any fact known to the Company which would prohibit the making of any payment
to or by the Trustee in respect of the Securities.  Notwithstanding the
provisions of this Article or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts
which would prohibit the making of any payment to or by the Trustee in respect
of the Securities, unless and until the Trustee shall have received written
notice thereof from the Company, any Guarantor, the Agent or a holder of
Senior Indebtedness or Guarantor Senior Indebtedness or from any trustee,
fiduciary or agent therefor; and, prior to the receipt of any such written
notice, the Trustee, subject to TIA Sections 315(a) through 315(d), shall be
entitled in all respects to assume that no such facts exist; provided,
however, that, if the Trustee shall not have received the notice provided for
in this Section at least three Business Days prior to the date upon which by
the terms hereof any  money may become payable for any purpose (including,
without limitation, the payment of the principal of (and premium, if any, on)
or interest on any Security), then, anything herein contained to the contrary
notwithstanding, the Trustee shall have full power and authority to receive
such money and to apply the same to the purpose for which such money was
received and shall not be affected by any notice to the contrary which may be
received by it within three Business Days prior to such date.

         (b)   Subject to TIA Sections 315(a) through 315(d), the Trustee
shall be entitled to rely on the delivery to it of a written notice by a
Person representing himself to be a holder of Senior Indebtedness (or a
trustee, fiduciary or agent therefor) to establish that such notice has been
given by a holder of Senior Indebtedness (or a trustee, fiduciary or agent
therefor).  In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any Person as a
holder of Senior Indebtedness to participate in any payment or distribution
pursuant to this Article, the Trustee may request such Person to furnish
evidence to the reasonable satisfaction of the Trustee as to the amount of
Senior Indebtedness held by such Person, the extent to which such Person is
entitled to participate in such payment or distribution and any other facts
pertinent to the rights of such Person under this Article and, if such evidence
is not furnished, the Trustee may defer any payment to such Person pending
judicial determination as to the right of such Person to receive such payment.

         SECTION 1410.  Reliance on Judicial Order or Certificate of
Liquidating Agent.

         Upon any payment or distribution of assets of the Company referred to
in this Article, the Trustee, subject to TIA Sections 315(a) through 315(d),
and the Holders of the Securities shall be entitled to rely upon any order or
decree entered by any court of competent jurisdiction in which such
insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, receiver, liquidating trustee,
custodian, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the Holders of
Securities, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of Senior
Indebtedness and other indebtedness of the Company, the amount thereof or
payable thereon, the amount or amounts paid or distributed thereon and all
other facts pertinent thereto or to this Article.

         SECTION 1411.  Rights of Trustee As a Holder of Senior Indebtedness;
Preservation of Trustee's Rights.

         The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Senior Indebtedness which
may at any time be held by it, to the same extent as any other holder of
Senior Indebtedness, and nothing in this Indenture shall deprive the Trustee
of any of its rights as such holder.  Nothing in this Article shall apply to
claims of, or payments to, the Trustee under or pursuant to Section 606.

         SECTION 1412.  Article Applicable to Paying Agents.

         In case at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying
Agent within its meaning as fully for all intents and purposes as if such
Paying Agent were named in this Article in addition to or in place of the
Trustee; provided, however, that Sections 1409(a) and 1411 shall not apply to
the Company or any Affiliate of the Company if it or such Affiliate acts as
Paying Agent.

         SECTION 1413.  No Suspension of Remedies.

         Nothing contained in this Article shall limit the right of the
Trustee or the Holders of Securities to take any action to accelerate the
maturity of the Securities pursuant to Article Five or to pursue any rights or
remedies hereunder or under applicable law.

         SECTION 1414.  Trust Moneys Not Subordinated.

         Notwithstanding anything contained herein to the contrary, payments
from cash or the proceeds of U.S. Government Obligations held in trust under
Article Twelve hereof by the Trustee (or other qualifying trustee) and which
were deposited in accordance with the terms of Article Twelve hereof and not
in violation of Section 1403 hereof for the payment of principal of (and
premium, if any, on) and interest on the Securities shall not be subordinated
to the prior payment of any Senior Indebtedness or subject to the restrictions
set forth in this Article Fourteen, and none of the Holders shall be obligated
to pay over any such amount to the Company or any holder of Senior
Indebtedness or any other creditor of the Company.

         SECTION 1415.  Trustee's Relation to Senior Indebtedness.

         With respect to the holders of Senior Indebtedness, the Trustee
undertakes to perform or to observe only such of its covenants and obligations
as are specifically set forth in this Article, and no implied covenants or
obligations with respect to the holders of Senior Indebtedness shall be read
into this Article against the Trustee.  The Trustee shall not be deemed to owe
any fiduciary duty to the holders of Senior Indebtedness and the Trustee shall
not be liable to any holder of Senior Indebtedness if it shall mistakenly in
the absence of gross negligence or wilful misconduct pay over or deliver to
Holders, the Company or any other Person moneys or assets to which any holder
of Senior Indebtedness shall be entitled by virtue of this Article or
otherwise.

         This Indenture may be signed in any number of counterparts each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same Indenture.

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                          ADT OPERATIONS, INC.


     [SEAL]                               By
                                            --------------------------
                                            Title:

Attest:
       ---------------------------
       Title:

                                          ADT LIMITED


     [SEAL]                               By
                                            --------------------------
                                            Title:

Attest:
       ---------------------------
       Title:

                                          THE BANK OF NEW YORK


     [SEAL]                               By
                                            --------------------------
                                            Title:

Attest:
       ---------------------------
       Title:






<PAGE>

                                                                 EXHIBIT 10.4
==============================================================================


                             ADT OPERATIONS, INC.,

                                  as Issuer,

                                      AND

                                 ADT LIMITED,

                                 as Guarantor,

                                      AND

                             THE BANK OF NEW YORK,

                                  as Trustee

                        Amended and Restated Indenture

                           Dated as of July 2, 1997

                                 $350,000,000

                   9 1/4% Senior Subordinated Notes due 2003

==============================================================================

                             ADT OPERATIONS, INC.

              Reconciliation and tie between Trust Indenture Act
               of 1939 and Indenture, dated as of August 4, 1993


Trust Indenture                                          Indenture
  Act Section                                             Section
- ---------------                                          ---------
Section  310(a)(1)........................................  607
     (a)(2)...............................................  607
     (b)..................................................  701
Section  314(a)...........................................  703
     (a)(4)...............................................  1008(a)
     (c)(1)...............................................  102
     (c)(2)...............................................  102
     (e)..................................................  102
Section  315(b)...........................................  601
Section  316(a)(last
     sentence)............................................  101("Outstanding")
     (a)(1)(A)............................................  502, 512
     (a)(1)(B)............................................  513
     (b)..................................................  508
     (c)..................................................  104(d)
Section  317(a)(1)........................................  503
     (a)(2)...............................................  504
     (b)..................................................  1003
Section  318(a)...........................................  111


                               TABLE OF CONTENTS
                                    --------
                                                                          PAGE
                                                                          ----
   PARTIES................................................................. 1
   RECITALS................................................................ 1


                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

   SECTION 101.  Definitions ............................................. 2
         Act.............................................................. 2
         ADT Limited...................................................... 2
         Affiliate........................................................ 2
         Agent............................................................ 3
         Board of Directors............................................... 3
         Board Resolution................................................. 3
         Business Day..................................................... 3
         Capitalized Lease Obligation..................................... 3
         Capital Stock.................................................... 3
         Cash Equivalents................................................. 3
         Change in Control................................................ 4
         Commission....................................................... 5
         Common Stock..................................................... 5
         Company.......................................................... 5
         Company Request.................................................. 5
         Consolidated Net Worth........................................... 5
         Corporate Trust Office........................................... 5
         corporation...................................................... 5
         Default.......................................................... 5
         Defaulted Interest............................................... 5
         Designated Guarantor Senior Indebtedness......................... 5
         Designated Senior Indebtedness................................... 6
         Dollar Equivalent................................................ 6
         Event of Default................................................. 6
         Exchange Act..................................................... 6
         Federal Bankruptcy Code.......................................... 6
         Finance Canada Preferred Stock................................... 6
         Generally Accepted Accounting Principles......................... 6
         Guaranteed Obligations........................................... 7
         Guaranteed Parties............................................... 7
         Guarantees....................................................... 7
         Guarantor........................................................ 7
         Guarantor Non-payment Default.................................... 7
         Guarantor Payment Default........................................ 7
         Guarantor Senior Indebtedness.................................... 7
         Holder........................................................... 8
         Indebtedness..................................................... 8
         Indenture........................................................ 8
         Interest Payment Date............................................ 8
         Laidlaw Group.................................................... 9
         Lender........................................................... 9
         Lien............................................................. 9
         Material Restricted Subsidiary................................... 9
         Maturity......................................................... 9
         New Bank Credit Agreement........................................ 9
         Non-Guarantor.................................................... 10
         Non-payment Default.............................................. 10
         Officers' Certificate............................................ 10
         Opinion of Counsel............................................... 10
         Outstanding...................................................... 10
         Paying Agent..................................................... 11
         Payment Default.................................................. 11
         Person........................................................... 11
         Post-Merger Entity............................................... 11
         Predecessor Security............................................. 11
         Preferred Stock.................................................. 12
         Redeemable Capital Stock......................................... 12
         Redemption Date.................................................. 12
         Redemption Price................................................. 12
         Reference Banks.................................................. 12
         Regular Record Date.............................................. 12
         Responsible Officer.............................................. 12
         Restricted Subsidiary............................................ 12
         Securities....................................................... 13
         Security Register................................................ 13
         Senior Indebtedness.............................................. 13
         Senior Note Indenture............................................ 13
         Senior Notes..................................................... 14
         Special Record Date.............................................. 14
         Stated Maturity.................................................. 14
         Subordinated Indebtedness........................................ 14
         Subsidiary....................................................... 14
         Subsidiary Guarantor............................................. 14
         Surviving Entity................................................. 14
         Trust Indenture Act" or "TIA..................................... 14
         Trustee.......................................................... 14
         Tyco............................................................. 14
         Unrestricted Subsidiary.......................................... 14
         U.S. Government Obligations...................................... 15
         Vice President................................................... 16
         Voting Stock..................................................... 16
         Wholly Owned Restricted Subsidiary............................... 16
   SECTION 102.      Compliance Certificates and Opinions................. 16
   SECTION 103.      Form of Documents Delivered to Trustee............... 17
   SECTION 104.      Acts of Holders...................................... 18
   SECTION 105.      Notices, etc., to Trustee, Company, Guarantors and
                     Agent................................................ 19
   SECTION 106.      Notice to Holders; Waiver............................ 19
   SECTION 107.      Effect of Headings and Table of Contents............. 20
   SECTION 108.      Successors and Assigns............................... 20
   SECTION 109.      Separability Clause.................................. 20
   SECTION 110.      Benefits of Indenture................................ 20
   SECTION 111.      Governing Law........................................ 21
   SECTION 112.      Legal Holidays....................................... 21
   SECTION 113.      No Recourse Against Others........................... 21
   SECTION 114.      Submission to Jurisdiction........................... 21

                                  ARTICLE TWO

                                 SECURITY FORMS

   SECTION 201.      Forms Generally...................................... 22
   SECTION 202.      Form of Face of Security............................. 22
   SECTION 203.      Form of Reverse of Security.......................... 25
   SECTION 204.      Form of Trustee's Certificate of Authentication...... 28
   SECTION 205.      Form of Guarantee.................................... 28

                                ARTICLE THREE

                                THE SECURITIES

   SECTION 301.      Title and Terms...................................... 29
   SECTION 302.      Denominations........................................ 30
   SECTION 304.      Temporary Securities................................. 31
   SECTION 305.      Registration, Registration of Transfer and Exchange.. 32
   SECTION 306.      Mutilated, Destroyed, Lost and Stolen Securities..... 33
   SECTION 307.      Payment of Interest; Interest Rights Preserved....... 34
   SECTION 308.      Persons Deemed Owners................................ 35
   SECTION 309.      Cancellation......................................... 35
   SECTION 310.      Computation of Interest.............................. 36

                                 ARTICLE FOUR

                            SATISFACTION AND DISCHARGE

   SECTION 401.      Satisfaction and Discharge of Indenture.............. 36
   SECTION 402.      Application of Trust Money........................... 37

                                 ARTICLE FIVE

                                   REMEDIES

   SECTION 501.      Events of Default.................................... 37
   SECTION 502.      Acceleration of Maturity; Rescission and Annulment... 40
   SECTION 503.      Collection of Indebtedness and Suits for Enforcement
                     by Trustee........................................... 42
   SECTION 504.      Trustee May File Proofs of Claim..................... 42
   SECTION 505.      Trustee May Enforce Claims Without Possession of
                     Securities........................................... 43
   SECTION 506.      Application of Money Collected....................... 44
   SECTION 507.      Limitation on Suits.................................. 44
   SECTION 508.      Unconditional Right of Holders to Receive Principal,
                     Premium and Interest................................. 45
   SECTION 509.      Restoration of Rights and Remedies................... 45
   SECTION 510.      Rights and Remedies Cumulative....................... 45
   SECTION 511.      Delay or Omission Not Waiver......................... 46
   SECTION 512.      Control by Holders................................... 46
   SECTION 513.      Waiver of Past Defaults.............................. 46
   SECTION 514.      Waiver of Stay or Extension Laws..................... 47
   SECTION 515.      Undertaking for Costs................................ 47

                                  ARTICLE SIX

                                  THE TRUSTEE

   SECTION 601.      Notice of Defaults................................... 47
   SECTION 602.      Certain Rights of Trustee............................ 48
   SECTION 603.      Trustee Not Responsible for Recitals or Issuance of
                     Securities........................................... 49
   SECTION 604.      May Hold Securities.................................. 50
   SECTION 605.      Money Held in Trust.................................. 50
   SECTION 606.      Compensation and Reimbursement....................... 50
   SECTION 607.      Corporate Trustee Required; Eligibility.............. 51
   SECTION 608.      Resignation and Removal; Appointment of Successor.... 51
   SECTION 609.      Acceptance of Appointment by Successor............... 52
   SECTION 610.      Merger, Conversion, Consolidation or Succession to
                     Business............................................. 53

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

   SECTION 701.      Disclosure of Names and Addresses of Holders......... 54
   SECTION 702.      Reports by Trustee................................... 54
   SECTION 703.      Reports by Company and the Guarantors................ 54

                                 ARTICLE EIGHT

               CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

   SECTION 801.      ADT Limited or Any Restricted Subsidiary May
                     Consolidate, etc., Only on Certain Terms............. 55
   SECTION 802.      ADT Limited May Amalgamate, Redomesticate, etc.,
                     Only on Certain Terms................................ 56
   SECTION 803.      Successor Substituted................................ 57

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

   SECTION 901.      Supplemental Indentures Without Consent of Holders... 58
   SECTION 902.      Supplemental Indentures with Consent of Holders...... 59
   SECTION 903.      Execution of Supplemental Indentures................. 60
   SECTION 904.      Effect of Supplemental Indentures.................... 60
   SECTION 905.      Conformity with Trust Indenture Act.................. 60
   SECTION 906.      Reference in Securities to Supplemental Indentures... 60
   SECTION 907.      Notice of Supplemental Indentures.................... 61
   SECTION 908.      Effect on Senior Indebtedness........................ 61

                                  ARTICLE TEN

                                   COVENANTS

   SECTION 1001.     Payment of Principal, Premium, if any, and Interest.. 61
   SECTION 1002.     Maintenance of Office or Agency...................... 61
   SECTION 1003.     Money for Security Payments to Be Held in Trust...... 62
   SECTION 1004.     Corporate Existence.................................. 63
   SECTION 1005.     Payment of Taxes and Other Claims.................... 63
   SECTION 1006.     Maintenance of Properties............................ 64
   SECTION 1007.     Insurance............................................ 64
   SECTION 1008.     Statement by Officers As to Default.................. 64
   SECTION 1009.     Provision of Financial Statements.................... 65
   SECTION 1010.     Purchase of Securities upon Change in Control........ 65
   [SECTIONS 1011-1020 intentionally omitted.]............................ 66
   SECTION 1021.     Waiver of Certain Covenants.......................... 66

                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

   SECTION 1101.     Right of Redemption.................................. 67
   SECTION 1102.     Applicability of Article............................. 67
   SECTION 1103.     Election to Redeem; Notice to Trustee................ 67
   SECTION 1104.     Selection by Trustee of Securities to Be Redeemed.... 67
   SECTION 1105.     Notice of Redemption................................. 68
   SECTION 1106.     Deposit of Redemption Price.......................... 69
   SECTION 1107.     Securities Payable on Redemption Date................ 69
   SECTION 1108.     Securities Redeemed in Part.......................... 69

                                ARTICLE TWELVE

                      DEFEASANCE AND COVENANT DEFEASANCE

   SECTION 1201.     Company's Option to Effect Defeasance or Covenant
                     Defeasance........................................... 70
   SECTION 1202.     Defeasance and Discharge............................. 70
   SECTION 1203.     Covenant Defeasance.................................. 70
   SECTION 1204.     Conditions to Defeasance or Covenant Defeasance...... 71
   SECTION 1205.     Deposited Money and U.S. Government Obligations to
                     Be Held in Trust; Other Miscellaneous
                     Provisions........................................... 73
   SECTION 1206.     Reinstatement........................................ 74

                               ARTICLE THIRTEEN

                                   GUARANTEE

   SECTION 1301.     Guarantee............................................ 74
   SECTION 1302.     Obligations of the Guarantors Unconditional.......... 76
   SECTION 1303.     Execution of Guarantee............................... 76
   SECTION 1304.     Guarantees Subordinate to Guarantor Senior
                     Indebtedness......................................... 77
   SECTION 1305.     Payment over of Proceeds upon Dissolution, etc....... 77
   SECTION 1306.     Suspension of Payment When Designated Guarantor
                     Senior Indebtedness in Default....................... 79
   SECTION 1307.     Payment Permitted If No Default...................... 81
   SECTION 1308.     Subrogation to Rights of Holders of Guarantor Senior
                     Indebtedness......................................... 81
   SECTION 1309.     Trustee to Effectuate Subordination.................. 82
   SECTION 1310.     No Waiver of Subordination Provisions................ 82
   SECTION 1311.     Notice to Trustee.................................... 82
   SECTION 1312.     Reliance on Judicial Order or Certificate of
                     Liquidating Agent.................................... 83
   SECTION 1313.     Rights of Trustee As a Holder of Guarantor Senior
                     Indebtedness; Preservation of Trustee's
                     Rights............................................... 84
   SECTION 1314.     Article Applicable to Paying Agents.................. 84
   SECTION 1315.     No Suspension of Remedies............................ 84
   SECTION 1316.     Trust Moneys Not Subordinated........................ 84
   SECTION 1317.     Trustee's Relation to Guarantor Senior Indebtedness.. 85
   SECTION 1318.     Withholding.......................................... 85
   SECTION 1319.     Release of Guarantee................................. 86

                               ARTICLE FOURTEEN

                          SUBORDINATION OF SECURITIES

   SECTION 1401.     Securities Subordinate to Senior Indebtedness........ 87
   SECTION 1402.     Payment over of Proceeds upon Dissolution, etc....... 87
   SECTION 1403.     Suspension of Payment When Designated Senior
                     Indebtedness in Default.............................. 89
   SECTION 1404.     Payment Permitted If No Default...................... 91
   SECTION 1405.     Subrogation to Rights of Holders of Senior
                     Indebtedness......................................... 91
   SECTION 1406.     Provisions Solely to Define Relative Rights.......... 91
   SECTION 1407.     Trustee to Effectuate Subordination.................. 92
   SECTION 1408.     No Waiver of Subordination Provisions................ 92
   SECTION 1409.     Notice to Trustee.................................... 93
   SECTION 1410.     Reliance on Judicial Order or Certificate of
                     Liquidating Agent.................................... 94
   SECTION 1411.     Rights of Trustee As a Holder of Senior Indebtedness;
                     Preservation of Trustee's Rights..................... 94
   SECTION 1412.     Article Applicable to Paying Agents.................. 94
   SECTION 1413.     No Suspension of Remedies............................ 94
   SECTION 1414.     Trust Moneys Not Subordinated........................ 95
   SECTION 1415.     Trustee's Relation to Senior Indebtedness............ 95
- ------------
Note:  This table of contents shall not, for any purpose, be deemed to be a
part of this Indenture.


         AMENDED AND RESTATED INDENTURE, dated as of July 2, 1997 among ADT
OPERATIONS, INC., a corporation duly organized and existing under the laws of
the State of Delaware (herein called the "Company"), having its principal
office at 902 Market Street, 13th Floor, Wilmington, Delaware 19899, as
Issuer, ADT LIMITED, a company duly organized and existing under the laws of
Bermuda ("ADT Limited"), having its principal office at Cedar House, 41 Cedar
Avenue, Hamilton HM12, Bermuda, as Guarantor (the "Guarantor"), and THE BANK
OF NEW YORK, a national banking association duly organized and existing under
the laws of the United States of America, as Trustee (herein called the
"Trustee").


                   RECITALS OF THE COMPANY AND THE GUARANTOR

         The Company has duly authorized the creation of an issue of 9-1/4%
Senior Subordinated Notes due 2003 (herein called the "Securities"), of
substantially the tenor and amount hereinafter set forth, and to provide
therefor the Company has duly authorized the execution and delivery of The
Indenture, dated as of August 3, 1993 among the Company, ADT Limited and the
Trustee (the "1993 Senior Subordinated Note Indenture") and the Securities.

         The Guarantor has duly authorized the issuance of a guarantee (the
"Guarantee") of the Securities, of substantially the tenor hereinafter set
forth, and to provide therefor the Guarantor duly authorized the execution and
delivery of the 1993 Senior Subordinated Notes Indenture and the Guarantee.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities, by Act of said Holders delivered to the Company and
the Trustee, have authorized certain amendments to the 1993 Senior
Subordinated Note Indenture.

         The Company, the Guarantor and the Trustee has duly authorized the
execution and delivery of this Indenture.

         This Indenture is subject to the provisions of the Trust Indenture
Act of 1939, as amended, that are required to be part of this Indenture and
shall, to the extent applicable, be governed by such provisions.

         All things necessary have been done to make (i) the Securities the
valid obligations of the Company, (ii) the Guarantee the valid obligation of
the Guarantor and (iii) this Indenture a valid agreement of the Company and
the Guarantor, in accordance with their respective terms.

         NOW, THEREFORE, THIS INDENTURE WITNESSETH:

         For and in consideration of the premises, the prior purchase of the
Securities by the Holders thereof and the receipt of consideration pursuant to
a simultaneous tender offer and consent solicitation by the Company for the
Securities, it is mutually covenanted and agreed, for the equal and
proportionate benefit of all Holders of the Securities, as follows:


                                  ARTICLE ONE

                       DEFINITIONS AND OTHER PROVISIONS
                            OF GENERAL APPLICATION

         SECTION 101.   Definitions.

         For all purposes of this Indenture, except as otherwise expressly
provided or unless the context otherwise requires:

         (a)   the terms defined in this Article have the meanings assigned to
   them in this Article, and include the plural as well as the singular;

         (b)   all other terms used herein which are defined in the Trust
   Indenture Act, either directly or by reference therein, have the meanings
   assigned to them therein, and the terms "cash transaction" and
   "self-liquidating paper", as used in TIA Section 311, shall have the
   meanings assigned to them in the rules of the Commission adopted under the
   Trust Indenture Act; and

         (c)   the words "herein", "hereof" and "hereunder" and other words of
   similar import refer to this Indenture as a whole and not to any particular
   Article, Section or other subdivision.

         Certain terms, used principally in Article Ten, are defined in that
Article.


         "Act", when used with respect to any Holder, has the meaning
specified in Section 104 hereof.

         "ADT Limited" means ADT Limited, a Bermuda company.

         "Affiliate" of any specified Person means (i) any other Person
directly or indirectly controlling or controlled by or under direct or
indirect common control with such specified Person or (ii) any officer or
director of such specified Person.  For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

         "Agent" means The Bank of Nova Scotia, as agent under the New Bank
Credit Agreement, and any future such agent or agents under the New Bank
Credit Agreement.

         "Board of Directors" means the board of directors of ADT Limited;
provided, however, that for purposes of the proviso of Section 1004 hereof
with respect to any right or franchise of a Restricted Subsidiary other than
the Company, "Board of Directors" shall include any committee of such Board of
Directors duly authorized to act under this Indenture.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of ADT Limited, the Company or any other
Guarantor, as the case may be, to have been duly adopted by the Board of
Directors of ADT Limited or the board of directors of the Company or such
other Guarantor, as the case may be, and to be in full force and effect on the
date of such certification, and delivered to the Trustee.

         "Business Day" means each Monday, Tuesday, Wednesday, Thursday and
Friday which is not a day on which banking institutions in The City of New
York or the city in which the Corporate Trust Office is located are authorized
or obligated by law or executive order to close.

         "Capitalized Lease Obligation" means any obligation under any capital
lease of real or personal property that, in accordance with GAAP, has been
recorded as a capitalized lease obligation, and, for purposes of this
Indenture, the amount of such obligation at any date shall be the capitalized
amount thereof at such date, determined in accordance with GAAP.

         "Capital Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated) of
such Person's capital stock whether now outstanding or issued after the date
hereof, including, without limitation, all Common Stock and Preferred Stock.

         "Cash Equivalents" means (i) any evidence of Indebtedness with a
maturity of 180 days or less issued or directly and fully guaranteed or
insured by the United States of America or any agency or instrumentality
thereof (provided that the full faith and credit of the United States of
America is pledged in support thereof); (ii) certificates of deposit or time
deposits with a maturity of 180 days or less of any financial institution that
is a member of the Federal Reserve System having combined capital and surplus
and undivided profits of not less than $500,000,000 (x) whose short term
obligations have a rating, at the time as of which any such Investment is
made, of "P-1" (or higher) according to Moody's Investors Service, Inc. or
"A-1" (or higher) according to Standard & Poor's Corporation or (y) whose debt
is rated, at the time as of which any Investment therein is made, "A" (or
higher) according to Moody's Investors Service, Inc. or "A" (or higher)
according to Standard & Poor's Corporation; (iii) commercial paper with a
maturity of 180 days or less issued by a corporation (other than an Affiliate
of ADT Limited) organized under the laws of any state of the United States of
America or the District of Columbia and rated "P-1" (or higher) according to
Moody's Investors Service, Inc. or "A-1" (or higher) according to Standard &
Poor's Corporation or at least an equivalent rating category of another
nationally recognized securities rating agency; and (iv) any money market
deposit accounts issued or offered by any commercial banking institution
described in clause (ii) above.

         "Change in Control" means an event as a result of which (i) any
"person" or "group" (as such terms are used in Sections 13(d) and 14(d) of the
Exchange Act), including the Laidlaw Group, is or becomes the direct or
indirect "beneficial owner" (as defined in Rule 13d-3 and 13d-5 under the
Exchange Act) of (A) if the Laidlaw Group beneficially owns more than 20% of
the outstanding Voting Stock of ADT Limited, more than 50% of such outstanding
Voting Stock and (B) if the Laidlaw Group beneficially owns 20% or less of the
outstanding Voting Stock of ADT Limited, more than 40% of such outstanding
Voting Stock, (ii) during any period of two consecutive years, individuals who
either (a) were members of the Board of Directors at the beginning of such
period or (b) whose election by the Board of Directors or whose nomination for
election by the shareholders of ADT Limited was approved by a vote of 66 2/3%
of the directors then still in office who were either directors at the
beginning of such period or whose election or nomination for election was
previously approved as provided for in this clause (b) cease for any reason
(including as a result of any proxy contest involving the solicitation of
revocable proxies under Section 14(a) of the Exchange Act) to constitute a
majority of the Board of Directors, (iii) the Company consolidates with or
merges with or into any other Person or all or substantially all of the
Company's assets are sold, conveyed, assigned, transferred, leased or
otherwise disposed of to any Person, or any corporation consolidates with or
merges with or into the Company (other than to, with or into a Wholly Owned
Restricted Subsidiary of ADT Limited), or (iv) ADT Limited consolidates or
amalgamates with or merges with or into any Person or all or substantially all
of ADT Limited's assets are sold, conveyed, assigned, leased or otherwise
disposed of to any Person, or any corporation consolidates with or merges with
or into ADT Limited, in any such event pursuant to a transaction in which the
outstanding Voting Stock of ADT Limited is changed into or exchanged for cash,
securities or other property, other than any such transaction (a) where the
outstanding Voting Stock of ADT Limited is not changed or exchanged at all
(except, with respect to any such transaction described above, to the extent
necessary to reflect a change in the jurisdiction of incorporation of ADT
Limited) or (b) where (A) the outstanding Voting Stock of ADT Limited is
changed into or exchanged for Voting Stock (other than Redeemable Capital
Stock) of the surviving corporation and (B) no "person" or "group" (as such
term is used in Sections 13(d) and 14(d) of the Exchange Act) is the
"beneficial owner" (as defined in Rules 13d-3 and 13d-5 under the Exchange
Act, except that a Person shall be deemed to have "beneficial ownership" of
all securities that such Person has the right to acquire, whether or not such
right is exercisable immediately or only after the passage of time)
immediately after such transaction, directly or indirectly, of more than 50%
of the total outstanding Voting Stock of the surviving corporation.

         "Commission" means the Securities and Exchange Commission, as from
time to time constituted, created under the Securities Exchange Act of 1934,
or, if at any time after the execution of this Indenture such Commission is
not existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties at such time.

         "Common Stock" means, with respect to any Person, any and all shares,
interests, participations and other equivalents (however designated, whether
voting or non-voting) of such Person's common stock, whether now outstanding
or issued after the date of this Indenture, and includes, without limitation,
all series and classes of such common stock.

         "Company" means the Person named as the "Company" in the first
paragraph of this Indenture, until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.

         "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman, its President, any Vice
President, its Treasurer or an Assistant Treasurer, and delivered to the
Trustee.

         "Consolidated Net Worth" means the consolidated stockholders' equity
(excluding Redeemable Capital Stock) of a person and its consolidated
Subsidiaries (and in the case of ADT Limited, of ADT Limited and its
Restricted Subsidiaries), as determined in accordance with GAAP.

         "Corporate Trust Office" means the principal corporate trust office
of the Trustee, at which at any particular time its corporate trust business
shall be administered, which office at the date of execution of this Indenture
is located at Towermarc Plaza, 10161 Centurion Parkway, Jacksonville, FL
32256, except that with respect to presentation of Securities for payment or
for registration of transfer or exchange, such term shall mean the office or
agency of the Trustee at which, at any particular time, its corporate agency
business shall be conducted.

         "corporation" includes corporations, associations, companies and
business trusts.

         "Default" means any event which is, or after notice or passage of
time or both would be, an Event of Default.

         "Defaulted Interest" has the meaning specified in Section 307.

         "Designated Guarantor Senior Indebtedness" means (i) all Indebtedness
under the New Bank Credit Agreement, (ii) the Senior Notes and (iii) any other
Guarantor Senior Indebtedness that, at the time of determination, has an
aggregate principal amount outstanding of at least $50,000,000 and is
specifically designated in the instrument evidencing such Guarantor Senior
Indebtedness as "Designated Guarantor Senior Indebtedness".

         "Designated Senior Indebtedness" means (i) all Indebtedness under the
New Bank Credit Agreement, (ii) the Senior Notes and (iii) any other Senior
Indebtedness that, at the time of determination, has an aggregate principal
amount outstanding of at least $50,000,000 and is specifically designated in
the instrument evidencing such Senior Indebtedness as "Designated Senior
Indebtedness".

         "Dollar Equivalent" means, with respect to any amount of any currency
other than U.S. dollars, the equivalent amount of U.S. dollars determined by
using the arithmetic average of the quoted spot rates at which the principal
office or principal branch office of each of the Reference Banks in London
offers to provide such other currency in exchange for U.S. dollars in London
at 2:00 P.M. London time on the date as of which such Dollar Equivalent is to
be determined, provided that if one or more of the Reference Banks no longer
announces such quoted spot rates for such currency, then the Dollar Equivalent
shall be determined by using the arithmetic average of the quoted spot rates
or the quoted spot rate, as the case may be, of the other Reference Banks or
Bank, respectively.

         "Event of Default" has the meaning specified in Section 501 hereof.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Federal Bankruptcy Code" means Title 11 of the United States Code,
as amended from time to time.

         "Finance Canada Preferred Stock" means the Non-Voting Exchangeable
Shares, Series A, of ADT Finance Inc., a Canadian corporation (the "Series A
Shares"), and any publicly-held non-voting Preferred Stock issued by any
successor corporation of ADT Finance Inc. incorporated under the laws of
Canada ("Finance Canada") (i) in respect of which dividends are payable only
when a dividend is payable by ADT Limited in respect of its voting Common
Stock, (ii) that is convertible, exchangeable or redeemable only for voting
Common Stock of ADT Limited, (iii) that will entitle the holder thereof to
participate in any liquidation, dissolution or winding up of Finance Canada,
whether voluntary or involuntary, or any other distribution of assets of
Finance Canada among its stockholders for the purpose of winding up its
affairs, to no greater extent than the extent to which the holders of the
Series A Shares would currently so participate and (iv) the other terms of
which are not adverse in any material respect to the Holders of the Securities.

         "Generally Accepted Accounting Principles" or "GAAP" means generally
accepted accounting principles in the United States, consistently applied,
that are in effect on the date hereof.

         "Guaranteed Obligations" has the meaning specified in Section 1301
hereof.

         "Guaranteed Parties" means all the Persons who are now or who
hereafter become Holders and the Trustee.

         "Guarantees" means the guarantees of the Guarantor set forth in
Article Thirteen of this Indenture and more particularly means any guarantees
endorsed on any Securities delivered under this Indenture.

         "Guarantor" means the party named as a "Guarantor" in the first
paragraph of this Indenture, until a successor replaces any such Guarantor
pursuant to the applicable provisions hereof and, thereafter, shall mean such
successor; provided, however, that unless expressly provided for otherwise by
a supplemental indenture hereto, no Post-Merger Entity shall be a "Guarantor".

         "Guarantor Non-payment Default" means any event (other than a
Guarantor Payment Default) the occurrence of which entitles one or more
Persons to accelerate the maturity of any Designated Guarantor Senior
Indebtedness.

         "Guarantor Payment Default" means any default in the payment of
principal of (or premium, if any, on) or interest on, or any other amount due
in respect of, Designated Guarantor Senior Indebtedness beyond any applicable
grace period with respect thereto.

         "Guarantor Senior Indebtedness" means the principal of (and premium,
if any, on) and interest on (including interest accruing after the filing of a
petition initiating any proceeding pursuant to any bankruptcy law, whether or
not allowable as a claim in such proceeding) and other amounts due on or in
connection with any Indebtedness of any Guarantor, whether outstanding on the
date hereof or hereafter created, incurred or assumed, unless, in the case of
any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is  outstanding expressly provides that such
Indebtedness shall not be senior in right of payment to the Guarantees.
Without limiting the generality of the foregoing, "Guarantor Senior
Indebtedness" shall include the principal of (and premium, if any, on) and
interest (including interest accruing after the filing of a petition
initiating any proceeding pursuant to any bankruptcy law, whether or not
allowable as a claim in such proceeding) on all obligations of every nature of
any Guarantor to the Lenders under the New Bank Credit Agreement and to the
holders of the Senior Notes under the Senior Note Indenture, and any interest
rate or foreign exchange agreement now existing or hereinafter entered into by
any Guarantor with any Lender, including, without limitation, all fees,
expenses (including fees and expenses of counsel), claims, charges and
indemnity obligations.  Notwithstanding the foregoing, "Guarantor Senior
Indebtedness" shall not include (i) Indebtedness evidenced by the Guarantees,
(ii) Indebtedness of any Guarantor that is expressly subordinated in right of
payment to any of such Guarantor's Guarantees, (iii) Indebtedness of any
Guarantor that by operation of law is subordinate to any general unsecured
obligations of such Guarantor, (iv)  Indebtedness represented by Redeemable
Capital Stock, (v) Indebtedness of any Guarantor to ADT Limited or any of its
Subsidiaries, (vi) any liability for federal, state, local or other taxes owed
or owing by any Guarantor and (vii) trade payables owed or owing by any
Guarantor.

         "Holder" means a Person in whose name a Security is registered in the
Security Register.

         "Indebtedness" means (i) any liability of any Person (A) for borrowed
money, or under any reimbursement obligation relating to a letter of credit,
or (B) evidenced by a bond, note, debenture or similar instrument (including a
purchase money obligation) given in connection with the acquisition of any
businesses, properties or assets of any kind (other than a trade payable or a
current liability arising in the ordinary course of business), or (C) under
interest rate contracts and exchange rate contracts, or (D) for the payment of
money relating to a Capitalized Lease Obligation or (E) for all Redeemable
Capital Stock valued at the greater of its voluntary or involuntary
liquidation preference plus accrued and unpaid dividends; (ii) any liability
of others described in the preceding clause (i) that` such Person has
guaranteed or that is otherwise its legal liability; (iii) all Indebtedness
referred to in (but not excluded from) clauses (i) and (ii) above of other
Persons and all dividends of other Persons, the payment of which is secured by
(or for which the holder of such Indebtedness has an existing right,
contingent or otherwise, to be secured by) any Lien upon or in property
(including, without limitation, accounts and contract rights) owned by such
Person, even though such Person has not assumed or become liable for the
payment of such Indebtedness; and (iv) any amendment, supplement,
modification, deferral, renewal, extension or refunding of any liability of
the types referred to in clauses (i), (ii) and (iii) above.

         "Indenture" means this amended and restated indenture as originally
executed and as it may from time to time be supplemented or amended by one or
more indentures supplemental hereto entered into pursuant to the applicable
provisions hereof.

         "Interest Payment Date" means the Stated Maturity of an installment
of interest on the Securities.

         "Investment" means any direct or indirect advance, loan (other than
advances to customers in the ordinary course of business, which are recorded
as accounts receivable on the balance sheet of the Company, ADT Limited and
the other Restricted Subsidiaries) or other extension of credit or capital
contribution to (by means of any transfer of cash or other property to others
or any payment for property or services for the account or use of others), or
any purchase or acquisition of Capital Stock, bonds, notes, debentures or
other securities issued by any other Person.

         "Laidlaw Group" means Laidlaw Inc., a Canadian corporation, and any
of its Affiliates or any "group" (as such term is used in Sections 13(d) and
14(d) of the Exchange Act) that includes Laidlaw Inc. or any of its Affiliates.

         "Lender" means the various financial institutions as are, or shall
from time to time become, parties to the New Bank Credit Agreement.

         "Lien" means any mortgage, charge, pledge, lien, security interest or
encumbrance of any kind.

         "Material Restricted Subsidiary" means any Restricted Subsidiary
whose total assets or consolidated revenues (or, where ADT Limited owns
directly or indirectly less than 100% of the equity share capital of such
Restricted Subsidiary, that part thereof attributable to ADT Limited's direct
or indirect interest therein) is equal to or greater than 5% of the total
assets or 5% of consolidated revenues, as the case may be, of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited; provided,
however, that a Material Restricted Subsidiary shall not include Insight Group
Limited, a United Kingdom corporation ("Insight"), for so long as Insight does
not conduct any business other than the travel services business and does not
account for more than 15% of the consolidated revenues of the Company, ADT
Limited and the other Restricted Subsidiaries taken as a whole as of the date
of the latest consolidated financial statements of ADT Limited.

         "Maturity", when used with respect to any Security, means the date on
which the principal of such Security or an installment of principal becomes
due and payable as therein or herein provided, whether at the Stated Maturity,
purchase upon Change in Control or Redemption Date, and whether by declaration
of acceleration, Change in Control, call for redemption or purchase or
otherwise.

         "New Bank Credit Agreement" means, collectively, the Amended and
Restated Credit Agreement, dated as of April 14, 1997, among the Company, the
Lenders named therein, and The Bank of Nova Scotia, as Agent, together with
any related documents (including, without limitation, any guarantees or
security documents) as in effect on the date hereof and as such Agreement (and
such related documents) may be amended, restated, supplemented, renewed,
replaced or otherwise modified from time to time, including any agreement
extending the maturity of or refinancing or refunding all or any portion of
the Indebtedness or increasing the amount to be borrowed under such agreement
or any successor agreement, whether or not by or among the same parties;
provided that, for purposes of the definitions of "Designated Guarantor Senior
Indebtedness" and "Designated Senior Indebtedness" and the blockage provisions
described in Sections 1306 and 1403 hereof, (i) with respect to any agreement
providing for the refinancing, replacement or refunding of Indebtedness under
the New Bank Credit Agreement, such agreement shall be the New Bank Credit
Agreement under this Indenture only if a notice to that effect is delivered to
the Trustee, and (ii) notwithstanding that, as a result of any amendment,
restatement, supplement, renewal, replacement or other modification of the New
Bank Credit Agreement, the New Bank Credit Agreement is memorialized in more
than one instrument, there shall be deemed to be at any one time only one
instrument, together with any related documents (including, without
limitation, any guarantees or security documents), that is the New Bank Credit
Agreement under this Indenture.

         "Non-Guarantor" means all Restricted Subsidiaries of ADT Limited
other than the Company and the Guarantors.

         "Non-payment Default" means any event (other than a Payment Default)
the occurrence of which entitles one or more Persons to accelerate the
maturity of any Designated Senior Indebtedness.

         "Officers' Certificate" means a certificate signed by the Chairman,
the President or a Vice President, and by the Treasurer, an Assistant
Treasurer, the Secretary or an Assistant Secretary of the Company or ADT
Limited, as the case may be, and delivered to the Trustee.

         "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Company, including an employee of the Company, and who shall
be acceptable to the Trustee.

         "Outstanding", when used with respect to the Securities, means, as of
the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except:

         (i)   Securities theretofore cancelled by the Trustee or delivered to
   the Trustee for cancellation;

         (ii)  Securities, or portions thereof, for whose payment or
   redemption money in the necessary amount has been theretofore deposited
   with the Trustee or any Paying Agent (other than the Company) in trust or
   set aside and segregated in trust by the Company (if the Company shall act
   as its own Paying Agent) for the Holders of such Securities; provided that,
   if such Securities are to be redeemed, notice of such redemption has been
   duly given pursuant to this Indenture or provision therefor satisfactory to
   the Trustee has been made;

         (iii) Securities, except to the extent provided in Sections 1202 and
   1203, with respect to which the Company has effected defeasance and/or
   covenant defeasance as provided in Article Twelve; and

         (iv)  Securities which have been paid pursuant to Section 306 or in
   exchange for or in lieu of which other Securities have been authenticated
   and delivered pursuant to this Indenture, other than any such Securities in
   respect of which there shall have been presented to the Trustee proof
   satisfactory to it that such Securities are held by a bona fide purchaser
   in whose hands the Securities are valid obligations of the Company;

provided, however, that in determining whether the Holders of the requisite
principal amount of Outstanding Securities have given any request, demand,
authorization, direction, consent, notice or waiver hereunder, and for the
purpose of making the calculations required by TIA Section 313, Securities
owned by the Company or any Guarantor or any Affiliate of the Company or any
Guarantor shall be disregarded and deemed not to be Outstanding, except that,
in determining whether the Trustee shall be protected in making such
calculation or in relying upon any such request, demand, authorization,
direction, notice, consent or waiver, only Securities which the Trustee knows
to be so owned shall be so disregarded.  Securities so owned which have been
pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Trustee the pledgee's right so to act
with respect to such Securities and that the pledgee is not the Company or any
Guarantor or any Affiliate of the Company or any Guarantor.

         "Paying Agent" means any Person (including the Company acting as
Paying Agent) authorized by the Company to pay the principal of (and premium,
if any, on) or interest on any Securities on behalf of the Company.

         "Payment Default" means any default in the payment of principal of
(or premium, if any, on) or interest on, or any other amount due in respect
of, Designated Senior Indebtedness beyond any applicable grace period with
respect thereto.

         "Person" means any individual, corporation, partnership, joint
venture, association, joint-stock company, trust, unincorporated organization
or government or any agency or political subdivision thereof.

         "Post-Merger Entity" means (i) any of Tyco and its Subsidiaries and
(ii) any other Subsidiary of ADT Limited created or acquired after the
consummation of the proposed merger between Tyco and Limited Apache, Inc., a
Wholly-Owned Subsidiary of ADT Limited and a Massachusetts corporation,
pursuant to the Agreement and Plan of Merger, dated as of March 17, 1997,
among Tyco, Limited Apache, Inc. and ADT Limited.

         "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that
evidenced by such particular Security; and, for the purposes of this
definition, any Security authenticated and delivered under Section 306 in
exchange for a mutilated security or in lieu of a lost, destroyed or stolen
Security shall be deemed to evidence the same debt as the mutilated, lost,
destroyed or stolen Security.

         "Preferred Stock" means, with respect to any Person, any and all
shares, interests, participations or other equivalents (however designated,
whether voting or non-voting) of such Person's preferred or preference stock
whether now outstanding or issued after the date hereof, including, without
limitation, all classes and series of preferred or preference stock.

         "Redeemable Capital Stock" means any Capital Stock of the Company, ADT
Limited or any other Restricted Subsidiary that, either by its terms, by the
terms of any security into which it is convertible or exchangeable or
otherwise, (i) is or upon the happening of an event or passage of time would
be required to be redeemed (for consideration other than shares of the common
equity capital of ADT Limited) on or prior to the final Stated Maturity of the
Securities, (ii) is redeemable at the option of the holder thereof (for
consideration other than shares of the  common equity capital of ADT Limited)
at any time prior to such final Stated Maturity, or (iii) is convertible into
or exchangeable for debt securities at any time prior to such final Stated
Maturity.

         "Redemption Date", when used with respect to any Security to be
redeemed, in whole or in part, means the date fixed for such redemption by or
pursuant to this Indenture.

         "Redemption Price", when used with respect to any Security to be
redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

         "Reference Banks" means each of The Chase Manhattan Bank, The Bank of
Nova Scotia and Midland Bank plc.

         "Regular Record Date" for the interest payable on any Interest
Payment Date means the January 15 or July 15  (whether or not a Business Day),
as the case may be, next preceding such Interest Payment Date.

         "Responsible Officer", when used with respect to the Trustee, means
the chairman or any vice-chairman of the board of directors, the chairman or
any vice-chairman of the executive committee of the board of directors, the
chairman of the trust committee, the president, any vice president, the
secretary, any assistant secretary, the treasurer, any assistant treasurer,
the cashier, any assistant cashier, any trust officer or assistant trust
officer, the controller or any assistant controller or any other officer of
the Trustee customarily performing functions similar to those performed by any
of the above-designated officers, and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred
because of his knowledge of and familiarity with the particular subject.

         "Restricted Subsidiary" means any Subsidiary of ADT Limited,
including, without limitation, the Company, other than an Unrestricted
Subsidiary.

         "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and
delivered under this Indenture.

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

         "Senior Indebtedness" means the principal of (and premium, if any,
on) and interest on (including interest accruing after the filing of a
petition initiating any proceeding pursuant to any bankruptcy law, whether or
not allowable as a claim in such proceeding) and other amounts due on or in
connection with, any Indebtedness of the Company, whether outstanding on the
date hereof or hereafter created, incurred or assumed, unless, in the case of
any particular Indebtedness, the instrument creating or evidencing the same or
pursuant to which the same is outstanding expressly provides that such
Indebtedness shall not be senior in right of payment to the Securities.
Without limiting the generality of the foregoing, "Senior Indebtedness" shall
include the principal of (and premium, if any, on) and interest on (including
interest accruing after the filing of a petition initiating any proceeding
pursuant to any bankruptcy law, whether or not allowable as a claim in such
proceeding) all obligations of every nature of the Company from time to time
owed to the Lenders under the New Bank Credit Agreement and to the holders of
the Senior Notes under the Senior Note Indenture, and any interest rate or
foreign exchange agreement now existing or hereinafter entered into by the
Company with any Lender, including, without limitation, all fees, expenses
(including fees and expenses of counsel), claims, charges and indemnity
obligations.  Notwithstanding the foregoing, "Senior Indebtedness" shall not
include (i) Indebtedness evidenced by the Securities, (ii) Indebtedness of the
Company that is expressly subordinated in right of payment to any Indebtedness
of the Company or the Securities, (iii) Indebtedness of the Company that by
operation of law is subordinate to any general unsecured obligations of the
Company, (iv) Indebtedness represented by Redeemable Capital Stock, (v)
Indebtedness of the Company to ADT Limited or any of its Subsidiaries, (vi)
any liability for federal, state, local or other taxes owed or owing by the
Company and (vii) trade account payables owed or owing by the Company.

         "Senior Note Indenture" means the indenture dated as of August 4,
1993, as amended, among the Company, as issuer, ADT Limited, ADT General
Holdings, Inc., ADT Security Services, Inc., ADT Security Systems, West, Inc.,
ADT Automotive Holdings, Inc., ADT Automotive, Inc., AA Property Holdings,
Inc., ADT Investments, Inc., AAAA Dealers Services Inc., ADT Business
Holdings, Inc., ADT Property Holdings, Inc., ADT Security Systems,
Manufacturing, Inc., Mid-Atlantic Security, Inc., ADT Automotive Services,
Inc., British Car Auctions Inc., CCTC International, Inc. and Flying Lion
Inc., each (other than ADT Limited) a Delaware corporation, Auction Transport
Inc., a Missouri corporation, ADT Specialty Auctions, Inc., a Michigan
corporation, and Tri-City Auto Auction, Inc., a Washington corporation, as
guarantors, and The Chase Manhattan Bank, as trustee, relating to the Company's
8-1/4% Senior Notes due 2000, as such indenture may be amended or supplemented
from time to time by one or more indentures supplemental thereto entered into
pursuant to the applicable provisions thereof.

         "Senior Notes" means the 8-1/4% Senior Notes due 2000 of the Company
issued pursuant to the Senior Note Indenture.

         "Special Record Date" for the payment of any Defaulted Interest means
a date fixed by the Trustee pursuant to Section 307.

         "Stated Maturity", when used with respect to any Indebtedness or any
installment of principal thereof or interest thereon, means the date specified
in such Indebtedness as the fixed date on which the principal of such
Indebtedness or such installment of principal or interest is due and payable.

         "Subordinated Indebtedness" means Indebtedness of any Person that by
its terms is subordinated in right of payment to other Indebtedness of such
Person and shall be deemed to include Redeemable Capital Stock.

         "Subsidiary" means with respect to any Person, a corporation of
which, at the time of determination, such Person, directly or indirectly
through one or more Subsidiaries, owns more than 50% of the Voting Stock.

         "Subsidiary Guarantor" means any Guarantor that is a Restricted
Subsidiary, other than a Restricted Subsidiary that is a direct or indirect
parent of the Company.

         "Surviving Entity" has the meaning specified in Section 801 hereof.

         "Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939,
as amended, as in force at the date as of which this Indenture was executed,
except as provided in Section 905.

         "Trustee" means the Person named as the "Trustee" in the first
paragraph of this Indenture until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

         "Tyco" means Tyco International Limited, a Massachusetts corporation.

         "Unrestricted Subsidiary" means (a) any Post-Merger Entity and (b)
any Subsidiary of ADT Limited that at the time of determination shall be
designated an Unrestricted Subsidiary by the Board of Directors in the manner
provided below and (c) any Subsidiary of an Unrestricted Subsidiary.  The
Board of Directors may designate (b) any Subsidiary of ADT Limited (including
any newly acquired or newly formed subsidiary) to be an Unrestricted
Subsidiary if such Subsidiary of ADT Limited is a Subsidiary (a)  no portion
of the Indebtedness or any other obligation (contingent or otherwise) of which
(i) is guaranteed by the Company, ADT Limited or any other Restricted
Subsidiary, (ii) is recourse to or obligates the Company, ADT Limited or any
other Restricted Subsidiary in any way or (iii) subjects any property or asset
of the Company, ADT Limited or any other Restricted Subsidiary, directly or
indirectly, contingently or otherwise, to satisfaction thereof, (b) which has
no Indebtedness or any other obligation that, if in default in any respect
(including a non-payment default), would permit (upon notice, lapse of time or
both) any holder of any other Indebtedness of the Company, ADT Limited or any
other Restricted Subsidiary to declare a default on such other Indebtedness or
cause the payment thereof to be accelerated or payable prior to its Stated
Maturity, (c) with which the Company, ADT Limited or any other Restricted
Subsidiary has no contract, agreement, arrangement, understanding or
obligation of any kind, whether written or oral, other than a transaction on
terms no less favorable to the Company, ADT Limited or any other Restricted
Subsidiary than those that might be obtained at the time from Persons who are
not Affiliates of the Company or ADT Limited, and (d) with which neither the
Company, ADT Limited nor any other Restricted Subsidiary has any obligation
(i) to subscribe for additional shares of Capital Stock, or other equity
interest therein, or (ii) to maintain or preserve such Restricted Subsidiary's
financial condition or to cause such Restricted Subsidiary to achieve certain
levels of operating results; provided, however, that in no event shall any
Guarantor be deemed an Unrestricted Subsidiary.  The Board of Directors may
designate any Unrestricted Subsidiary to be a Restricted Subsidiary; provided
that immediately after giving effect to such designation (A) any Indebtedness
or Liens of such Unrestricted Subsidiary would be permitted to be incurred by
such Restricted Subsidiary under this Indenture and (B) no Default or Event of
Default shall have occurred and be continuing.  Any such designation by the
Board of Directors shall be evidenced to the Trustees by promptly filing with
each of the Trustees a copy of the Board Resolution giving effect to such
designation and an Officers' Certificate certifying that such designation
complied with the foregoing provisions.  A designation of an Unrestricted
Subsidiary as a Restricted Subsidiary may not thereafter be rescinded.

         "U.S. Government Obligations" means securities that are (i) direct
obligations of the United States of America for the timely payment of which
its full faith and credit is pledged or (ii) obligations of a Person
controlled or supervised by and acting as an agency or instrumentality of the
United States of America the timely payment of which is unconditionally
guaranteed as a full faith and credit obligation by the United States of
America, which, in either case, are not callable or redeemable at the option
of the issuer thereof, and shall also include a depository receipt issued by a
bank (as defined in Section 3(a)(2) of the Securities Act of 1933, as amended),
as custodian with respect to any such U.S. Government Obligation or a specific
payment of principal of or interest on any such U.S. Government Obligation
held by such custodian for the account of the holder of such depository
receipt; provided that (except as required by law) such custodian is not
authorized to make any deduction from the amount payable to the holder of such
depository receipt from any amount received by the custodian in respect of the
U.S. Government Obligation or the specific payment of principal of or interest
on the U.S. Government Obligation evidenced by such depository receipt.

         "Vice President", when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president".

         "Voting Stock" means stock of the class or classes pursuant to which
the holders thereof have the general voting power under ordinary circumstances
to elect at least a majority of the board of directors, managers or trustees
of a corporation (irrespective of whether or not at the time stock of any
other class or classes shall have or might have voting power by reason of the
happening of any contingency).

         "Wholly Owned Restricted Subsidiary" means (i) a Subsidiary all the
Capital Stock (other than directors' qualifying shares that are required under
applicable law) of which is owned by ADT Limited or another Wholly Owned
Restricted Subsidiary of ADT Limited and (ii) ADT Finance Inc., a Canadian
corporation, if and only if and for so long as, the Capital Stock of ADT
Finance Inc. consists entirely of Voting Stock, 100% of which is owned
directly or indirectly by ADT Limited, and Non-Voting Exchangeable Shares,
Series A, or any successor corporation of ADT Finance Inc. incorporated under
the laws of Canada, provided that the Capital Stock of such successor shall
consist entirely of Voting Stock, 100% of which is owned directly or
indirectly by ADT Limited, and Finance Canada Preferred Stock.

         SECTION 102.   Compliance Certificates and Opinions.

         Upon any application or request by the Company or ADT Limited, on its
own behalf or on behalf of any Guarantor, to the Trustee to take any action
under any provision of this Indenture, the Company or ADT Limited, as the case
may be, shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent, if any, provided for in this Indenture (including any
covenant compliance with which constitutes a condition precedent) relating to
the proposed action have been complied with and an Opinion of Counsel stating
that in the opinion of such counsel all such conditions precedent, if any,
have been complied with, except that in the case of any such application or
request as to which the furnishing of such documents is specifically required
by any provision of this Indenture relating to such particular application or
request, no additional certificate or opinion need be furnished.

         Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture (other than pursuant to
Section 1008(a)) shall include:

         (1)   a statement that each Person signing such certificate or
   opinion has read such covenant or condition and the definitions herein
   relating thereto;

         (2)   a brief statement as to the nature and scope of the examination
   or investigation upon which the statements or opinions contained in such
   certificate or opinion are based;

         (3)   a statement that, in the opinion of each such Person, he has
   made such examination or investigation as is necessary to enable him to
   express an informed opinion as to whether or not such covenant or condition
   has been complied with; and

         (4)   a statement as to whether, in the opinion of each such Person,
   such condition or covenant has been complied with.

         SECTION 103.   Form of Documents Delivered to Trustee.

         In any case where several matters are required to be certified by, or
covered by an opinion of, any specified Person, it is not necessary that all
such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one
such Person may certify or give an opinion  with respect to some matters and
one or more other such Persons as to other matters, and any such Person may
certify or give an opinion as to such matters in one or several documents.

         Any certificate or opinion of an officer of the Company or any
Guarantor may be based, insofar as it relates to legal matters, upon a
certificate or opinion of, or representations by, counsel, unless such officer
knows, or in the exercise of reasonable care should know, that the certificate
or opinion or representations with respect to the matters upon which his
certificate or opinion is based are erroneous.  Any such certificate or
Opinion of Counsel may be based, insofar as it relates to factual matters,
upon a certificate or opinion of, or representations by, an officer or
officers of the Company or such Guarantor stating that the information with
respect to such factual matters is in the possession of the Company or such
Guarantor, unless such counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect
to such matters are erroneous.

         Where any Person is required to make, give or execute two or more
applications, requests, consents, certificates, statements, opinions or other
instruments under this Indenture, they may, but need not, be consolidated and
form one instrument.

         SECTION 104.   Acts of Holders.

         (a)   Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agents duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are
delivered to the Trustee and, where it is hereby expressly required, to the
Company or any Guarantor.  Such instrument or instruments (and the action
embodied therein and evidenced thereby) are herein sometimes referred to as
the "Act" of the Holders signing such instrument or instruments.  Proof of
execution of any such instrument or of a writing appointing any such agent
shall be sufficient for any purpose of this Indenture and conclusive in favor
of the Trustee, the Company and each Guarantor, if made in the manner provided
in this Section.

         (b)   The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate  of a notary public or other officer authorized
by law to take acknowledgments of deeds, certifying that the individual
signing such instrument or writing acknowledged to him the execution thereof.
Where such execution is by a signer acting in a capacity other than his
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of authority.  The fact and date of the execution of any such
instrument or writing, or the authority of the Person executing the same, may
also be proved in any other manner which the Trustee deems sufficient.

         (c)   The principal amount and serial numbers of Securities held by
any Person, and the date of holding the same, shall be proved by the Security
Register.

         (d)   If the Company shall solicit from the Holders of Securities any
request, demand, authorization, direction, notice, consent, waiver or other
Act, the Company may, at its option, by or pursuant to Board Resolution, fix
in advance a record date for the determination of Holders entitled to give
such request, demand, authorization, direction, notice, consent, waiver or
other Act, but the Company shall have no obligation to do so.  Notwithstanding
TIA Section 316(c), such record date shall be the record date specified in or
pursuant to such Board Resolution, which shall be a date not earlier than the
date 30 days prior to the first solicitation of Holders generally in
connection therewith and not later than the date such solicitation is
completed.  If such a record date is fixed, such request, demand,
authorization, direction, notice, consent, waiver or other Act may be given
before or after such record date, but only the Holders of record at the close
of business on such record date shall be deemed to be Holders for the purposes
of determining whether Holders of the requisite proportion of Outstanding
Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other Act, and for that
purpose the Outstanding Securities shall be computed as of such record date;
provided that no such authorization, agreement or consent by the Holders on
such record date shall be deemed effective unless it shall become effective
pursuant to the provisions of this Indenture not later than 11 months after
the record date.

         (e)   Any request, demand, authorization, direction, notice, consent,
waiver or other Act of the Holder of any Security shall bind every future
Holder of the same Security and the Holder of every Security issued upon the
registration of transfer thereof or in exchange therefor or in lieu thereof in
respect of anything done, omitted or suffered to be done by the Trustee, the
Company or any Guarantor in reliance thereon, whether or not notation of such
action is made upon such Security.

         SECTION 105.   Notices, etc., to Trustee, Company, Guarantors and
Agent.

         Any request, demand, authorization, direction, notice, consent,
waiver or Act of Holders or other document provided or permitted by this
Indenture to be made upon, given or furnished to, or filed with,

         (1)   the Trustee by any Holder or by the Company or any Guarantor
   shall be sufficient for every purpose hereunder if made, given, furnished
   or filed in writing to or with the Trustee at its Corporate Trust Office,
   Attention:  Corporate Trust Administration,

         (2)   the Company or any Guarantor by the Trustee or by any Holder
   shall be sufficient for every purpose hereunder (unless otherwise herein
   expressly provided) if in writing and mailed, first-class postage prepaid,
   to the Company or such Guarantor addressed to the Company or such Guarantor
   at the address of the Company's principal office specified in the first
   paragraph of this Indenture, or at any other address previously furnished
   in writing to the Trustee by the Company or such Guarantor, or

         (3)   the Agent by the Company, any Guarantor, the Trustee or any
   Holder shall be sufficient for any purpose hereunder if made, given,
   furnished or delivered, in writing to or with the Agent addressed to it c/o
   The Bank of Nova Scotia, Atlanta Agency, Suite 2700, 600 Peachtree Street
   N.E., Atlanta, Georgia 30308, Attention:  ADT Operations Account Officer,
   or at any other address previously furnished in writing to the Company and
   the Trustee by the Agent.

         SECTION 106.   Notice to Holders; Waiver.

         Where this Indenture provides for notice of any event to Holders by
the Company, any Guarantor or the Trustee, such notice shall be sufficiently
given (unless otherwise herein expressly provided) if in writing and mailed,
first-class postage prepaid, to each Holder affected by such event, at his
address as it appears in the Security Register, not later than the latest
date, and not earlier than the earliest date, prescribed for the giving of
such notice.  In any case where notice to Holders is given by mail, neither
the failure to mail such notice, nor any defect in any notice so mailed, to
any particular Holder shall affect the sufficiency of such notice with respect
to other Holders.  Any notice mailed to a Holder in the manner herein
prescribed shall be conclusively deemed to have been received by such Holder,
whether or not such Holder actually receives such notice.  Where this
Indenture provides for notice in any manner, such notice may be waived in
writing by the Person entitled to receive such notice, either before or after
the event, and such waiver shall be the equivalent of such notice.  Waivers of
notice by Holders shall be filed with the Trustee, but such filing shall not
be a condition precedent to the validity of any action taken in reliance upon
such waiver.

         In case by reason of the suspension of or irregularities in regular
mail service or by reason of any other cause, it shall be impracticable to
mail notice of any event to Holders when such notice is required to be given
pursuant to any provision of this Indenture, then any manner of giving such
notice as shall be satisfactory to the Trustee shall be deemed to be a
sufficient giving of such notice for every purpose hereunder.

         SECTION 107.   Effect of Headings and Table of Contents.

         The Article and Section headings herein and the Table of Contents are
for convenience only and shall not affect the construction hereof.

         SECTION 108.   Successors and Assigns.

         All covenants and agreements in this Indenture by the Company and the
Guarantors shall bind their respective successors and assigns, whether so
expressed or not.

         SECTION 109.   Separability Clause.

         In case any provision in this Indenture or in the Securities or the
Guarantees shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be
affected or impaired thereby.

         SECTION 110.   Benefits of Indenture.

         Nothing in this Indenture, the Securities or the Guarantees, express
or implied, shall give to any Person, other than the parties hereto, any
Paying Agent, any Security Registrar and their successors hereunder, the
Holders and, with respect to any provisions hereof relating to the
subordination of the Securities or the rights of holders of Senior
Indebtedness or Guarantor Senior Indebtedness, the holders of Senior
Indebtedness or Guarantor Senior Indebtedness, any benefit or any legal or
equitable right, remedy or claim under this Indenture.

         SECTION 111.   Governing Law.

         This Indenture, the Securities and the Guarantees shall be governed
by and construed in accordance with the law of the State of New York.  This
Indenture is subject to the provisions of the Trust Indenture Act that are
required to be part of this Indenture and shall, to the extent applicable, be
governed by such provisions.

         SECTION 112.   Legal Holidays.

         In any case where any Interest Payment Date, Redemption Date, or
Stated Maturity or Maturity of any Security shall not be a Business Day, then
(notwithstanding any other provision of this Indenture, the Securities or the
Guarantees) payment of interest or principal (and premium, if any) need not be
made on such date, but may be made on the next succeeding Business Day with
the same force and effect as if made on the Interest Payment Date, Redemption
Date, or at the Stated Maturity or Maturity; provided that no interest shall
accrue for the period from and after such Interest Payment Date, Redemption
Date, Stated Maturity or Maturity, as the case may be.

         SECTION 113.   No Recourse Against Others.

         A director, officer, employee or stockholder, as such, of the Company
or any Guarantor shall not have any liability for any obligations of the
Company or such Guarantor, as the case may be, under the Securities, this
Indenture or the Guarantees or for any claim based on, in respect of or by
reason of such obligations or their creation.  Each Holder by accepting any of
the Securities waives and releases all such liability.

         SECTION 114.   Submission to Jurisdiction.

         The Company and each Guarantor irrevocably agree that any suit,
action or proceeding against the Company or any Guarantor arising out of or
based upon this Indenture, the Securities, the Guarantees or the public
offering of the Securities may be instituted in any state or federal court in
the Borough of Manhattan, The City of New York, New York, and irrevocably
waive, to the extent they may lawfully do so, any objection which they may now
or hereafter have to the laying of venue of any such suit, action or
proceeding, and irrevocably submit to the nonexclusive jurisdiction of such
courts in any suit, action or proceeding.  The Company and each Guarantor
hereby irrevocably appoint ADT, Inc., 1750 Clint Moore Road, P.O. Box 5035,
Boca Raton, Florida 33431, as their Authorized Agent (the "Authorized Agent")
upon whom process may be served in any suit, action or proceeding arising out
of or based on this Indenture, the Securities, the Guarantees or the public
offering of the Securities which may be instituted in any state or federal
court in the Borough of Manhattan, The City of New York, New York, and the
Company and each Guarantor expressly consent to the jurisdiction of any such
court in respect of any such suit, action or proceeding, and waive any other
requirements of or objections to personal jurisdiction with respect thereto.
The Company and each Guarantor represent and warrant that the Authorized Agent
has agreed to act as said agent for service of process, and the Company and
each Guarantor agree to take any and all action, including the filing of any
and all documents and instruments, that may be necessary to continue such
appointment in full force and effect as aforesaid.  Service of process upon
the Authorized Agent and written notice of such service to the Company or any
Guarantor shall be deemed, in every respect, effective service of process upon
the Company or such Guarantor.  The foregoing does not limit any right of the
Trustee or any Holder of a Security to institute any suit, action or
proceeding in any other court of competent jurisdiction.


                                  ARTICLE TWO

                                SECURITY FORMS

         SECTION 201.   Forms Generally.

         The Securities, the Guarantees and the Trustee's certificate of
authentication shall be in substantially the forms set forth in this Article,
with such appropriate insertions, omissions, substitutions and other
variations as are required or permitted by this Indenture, and may have such
letters, numbers or other marks of identification and such legends or
endorsements placed thereon as may be required to comply with the rules of any
securities exchange or as may, consistently herewith, be determined by the
officers executing such Securities or Guarantees, as evidenced by their
execution of the Securities or Guarantees.  Any portion of the text of any
Security or Guarantee may be set forth on the reverse thereof, with an
appropriate reference thereto on the face of the Security or Guarantee.

         The definitive Securities and Guarantees shall be printed,
lithographed or engraved on steel-engraved borders or may be produced in any
other manner, all as determined by the officers of the Company executing such
Securities, as evidenced by their execution of such Securities.

         SECTION 202.   Form of Face of Security.

                             ADT OPERATIONS, INC.

                   9-1/4% Senior Subordinated Note due 2003

No.__________                                                     $__________

         ADT Operations, Inc., a Delaware corporation (herein called the
"Company", which term includes any successor Person under the Indenture
hereinafter referred to), for value received, hereby promises to pay to
_______________ or registered assigns, the principal sum of__________ Dollars
on August 1, 2003 at the office or agency of the Company referred to below,
and to pay interest thereon on February 1, 1994 and semi-annually thereafter,
on February 1 and August 1 in each year, from August 4, 1993, or from the most
recent Interest Payment Date to which interest has been paid or duly provided
for, at the rate of 9-1/4% per annum, until the principal hereof is paid or
duly provided for, and (to the extent lawful) to pay on demand interest on any
overdue interest at the rate borne by the Securities from the date on which
such overdue interest becomes payable to the date payment of such interest has
been made or duly provided for.  The interest so payable, and punctually paid
or duly provided for, on any Interest Payment Date will, as provided in such
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date for such interest, which shall be the January 15 or July 15
(whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date.  Any such interest not so punctually paid or duly
provided for shall forthwith cease to be payable to the Holder on such Regular
Record Date, and such defaulted interest, and (to the extent lawful) interest
on such defaulted interest at the rate borne by the Securities, may be paid to
the Person in whose name this Security (or one or more Predecessor Securities)
is registered at the close of business on a Special Record Date for the
payment of such Defaulted Interest to be fixed by the Trustee, notice whereof
shall be given to Holders of Securities not less than 10 days prior to such
Special Record Date, or may be paid at any time in any other lawful manner not
inconsistent with the requirements of any securities exchange on which the
Securities may be listed, and upon such notice as may be required by such
exchange, all as more fully provided in said Indenture.  Payment of the
principal of (and premium, if any, on) and interest on this Security will be
made at the office or agency of the Company maintained for that purpose in The
City of Atlanta, or at such other office or agency of the Company as may be
maintained for such purpose, in such coin or currency of the United States of
America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that payment of interest may be made at the
option of the Company (i) by check mailed to the address of the Person
entitled thereto as such address shall appear on the Security Register or (ii)
by transfer to an account maintained by the payee located in the United States.

         Reference is hereby made to the further provisions of this Security
set forth on the reverse hereof, which further provisions shall for all
purposes have the same effect as if set forth at this place.

         This Security is entitled to the benefits of the Guarantees issued by
each Guarantor of the punctual payment when due of the Guaranteed Obligations
made in favor of the Trustee for the benefit of the Holder.  Reference is
hereby made to Article Thirteen of the Indenture for a statement of the
respective rights, limitations of rights, duties and obligations under the
Guarantees of the Guarantors, the Trustee and the Holders.

         Unless the certificate of authentication hereon has been duly
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be entitled to any benefit under the Indenture, or be
valid or obligatory for any purpose.

         IN WITNESS WHEREOF, the Company has caused this instrument to be duly
executed under its corporate seal.

          Dated:                                ADT OPERATIONS, INC.


          [SEAL]                                By____________________

Attest:


__________________________
   Authorized Signature

         SECTION 203.   Form of Reverse of Security.

         This Security is one of a duly authorized issue of securities of the
Company designated as its 9-1/4% Senior Subordinated Notes due 2003 (herein
called the "Securities"), limited (except as otherwise provided in the
Indenture referred to below) in aggregate principal amount to $350,000,000,
which may be issued under an indenture dated as of August 4, 1993 between the
Company, as issuer, ADT Limited, as guarantor, and The Bank of New York, as
trustee (herein called the "Trustee", which term includes any successor
trustee under the Indenture), as amended and restated as of _______, 1997
(herein called the "Indenture") to which Indenture and all indentures
supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties, obligations and immunities
thereunder of the Company, the Guarantors, the Trustee and the Holders of the
Securities, and of the terms upon which the Securities are, and are to be,
authenticated and delivered.

         The indebtedness evidenced by the Securities is, to the extent and in
the manner provided in the Indenture, subordinate and subject in right of
payment to the prior payment in full of all Senior Indebtedness as defined in
the Indenture, and this Security is issued subject to such provisions.  The
indebtedness evidenced by the Guarantees endorsed on the Securities is, to the
extent and in the manner provided in the Indenture, subordinate and subject in
right of payment to the prior payment in full of all Guarantor Senior
Indebtedness as defined in the Indenture, and the Guarantee endorsed on this
Security is issued subject to such provisions.  Each Holder of this Security,
by accepting the same, (a) agrees to and shall be bound by such provisions, (b)
authorizes and directs the Trustee on his behalf to take such action as may be
necessary or appropriate to effectuate the subordination as provided in the
Indenture and (c) appoints the Trustee his attorney-in-fact for such purpose.

         The Securities are subject to redemption upon not less than 30 nor
more than 60 days' notice, at any time after August 1, 1998, as a whole or in
part, at the election of the Company, at a Redemption Price equal to the
percentage of the principal amount set forth below if redeemed during the
12-month period beginning August 1, of the years indicated:

                Redemption
                   Year                       Price
                ----------                    -----
                   1998                      103.75%
                   1999                      102.50%
                   2000                      101.25%


and thereafter at 100% of the principal amount, together in the case of any
such redemption with accrued interest, if any, to the Redemption Date, all as
provided in the Indenture.

         Upon the occurrence of a Change in Control, the Holder of this
Security may require the Company, subject to certain limitations provided in
the Indenture, to repurchase this Security at a purchase price in cash in an
amount equal to 101% of the principal amount thereof plus accrued and unpaid
interest.

         In the case of any redemption of Securities, interest installments
whose Stated Maturity is on or prior to the Redemption Date will be payable to
the Holders of such Securities, or one or more Predecessor Securities, of
record at the close of business on the relevant Record Date referred to on the
face hereof.  Securities (or portions thereof) for whose redemption and
payment provision is made in accordance with the Indenture shall cease to bear
interest from and after the Redemption Date.

         In the event of redemption of this Security in part only, a new
Security or Securities for the unredeemed portion hereof shall be issued in
the name of the Holder hereof upon the cancellation hereof.

         If an Event of Default shall occur and be continuing, the principal
of all the Securities may be declared due and payable in the manner and with
the effect provided in the Indenture.

         The Indenture contains provisions for defeasance at any time of (a)
the entire indebtedness of the Company on this Security and (b) certain
restrictive covenants and the related Defaults and Events of Default, upon
compliance by the Company with certain conditions set forth therein, which
provisions apply to this Security.

         The Indenture permits, with certain exceptions as therein provided,
the amendment thereof and the modification of the rights and obligations of
the Company and the Guarantors and the rights of the Holders under the
Indenture at any time by the Company, the Guarantors and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Securities at the time Outstanding.  The Indenture also contains provisions
permitting the Holders of specified percentages in aggregate principal amount
of the Securities at the time Outstanding, on behalf of the Holders of all the
Securities, to waive compliance by the Company and the Guarantors with certain
provisions of the Indenture and certain past defaults under the Indenture and
their consequences.  Any such consent or waiver by or on behalf of the Holder
of this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the
registration of transfer hereof or in exchange herefor or in lieu hereof
whether or not notation of such consent or waiver is made upon this Security.

         No reference herein to the Indenture and no provision of this
Security, the Guarantee endorsed hereon or the Indenture shall alter or impair
the obligation of the Company or any Guarantor (in the event any Guarantor is
obligated to make payments in respect of the Securities), which is absolute
and unconditional, to pay the principal of (and premium, if any, on) and
interest on this Security at the times, place, and rate, and in the coin or
currency, herein prescribed.

         As provided in the Indenture and subject to certain limitations
therein set forth, the transfer of this Security is registerable on the
Security Register of the Company, upon surrender of this Security for
registration of transfer at the office or agency of the Company maintained for
such purpose in The City of New York, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate principal amount, will be issued to
the designated transferee or transferees.

         The Securities are issuable only in registered form without coupons in
denominations of $1,000 and any integral multiple thereof.  As provided in the
Indenture and subject to certain limitations therein set forth, the Securities
are exchangeable for a like aggregate principal amount of Securities of a
different authorized denomination, as requested by the Holder surrendering the
same.

         No service charge shall be made for any registration of transfer or
exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge payable in connection
therewith.

         Prior to the time of due presentment of this Security for
registration of transfer, the Company, the Guarantors, the Trustee and any
agent of the Company, the Guarantors or the Trustee may treat the Person in
whose name this Security is registered as the owner hereof for all purposes,
whether or not this Security be overdue, and neither the Company, the
Guarantors, the Trustee nor any agent shall be affected by notice to the
contrary.

         All terms used in this Security which are defined in the Indenture
shall have the meanings assigned to them in the Indenture.

         SECTION 204.   Form of Trustee's Certificate of Authentication.

         The Trustee's certificate of authentication shall be in substantially
the following form:

                   TRUSTEE'S CERTIFICATE OF AUTHENTICATION.

         This is one of the Securities referred to in the within-mentioned
Indenture.

Dated:                           THE BANK OF NEW YORK,
                                    as Trustee

                                 By____________________
                                   Authorized Officer

         SECTION 205.   Form of Guarantee.

         The form of Guarantee shall be set forth on the Securities
substantially as follows:

                                   GUARANTEE

         For value received, [each of] the undersigned hereby irrevocably and
unconditionally guarantees, [jointly and severally,] on a senior subordinated
basis to the Holder of this Security and to the Trustee, on behalf of the
Holder, (i) the due and punctual payment of the principal of and interest on
this Security, when and as the same shall become due and payable, whether at
Stated Maturity, purchase upon Change in Control or Redemption Date, and
whether by declaration of acceleration, Change in Control, call for redemption
or purchase or otherwise, the due and punctual payment of interest on the
overdue principal of and interest, if any, on this Security, to the extent
lawful, and the due and punctual performance of all other obligations of the
Company to the Holder of this Security or the Trustee all in accordance with
the terms of this Security and the Indenture and (ii) in the case of any
extension of time of payment or renewal of this Security or any of such other
obligations, that the same will be promptly paid in full when due or performed
in accordance with the terms of the extension or renewal, at Stated Maturity,
purchase upon Change in Control or Redemption Date, and whether by declaration
of acceleration, Change in Control, call for redemption or purchase or
otherwise (the obligations in clauses (i) and (ii) hereof being the
"Guaranteed Obligations").  This Guarantee will not be valid or obligatory for
any purpose until the Trustee duly executes the certificate of authentication
on the Security upon which this Guarantee is endorsed.

Dated:

[SEAL]                                    ADT LIMITED,
                                            a Bermuda company


Attest:____________________               By____________________
       Authorized Signature


[SEAL]                                    [LIST ADDITIONAL GUARANTORS
                                              AND JURISDICTIONS OF
                                              INCORPORATION]

Attest:____________________               By____________________
       Authorized Signature

                                 ARTICLE THREE

                                THE SECURITIES

         SECTION 301.   Title and Terms.

         The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is limited to $350,000,000,
except for Securities authenticated and delivered upon registration of
transfer of, or in exchange for, or in lieu of, other Securities pursuant to
Section 304, 305, 306, 906, 1010 or 1108.

         The Securities shall be known and designated as the "9-1/4% Senior
Subordinated Notes due 2003" of the Company.  Their Stated Maturity shall be
August 1, 2003, and they shall bear interest at the rate of 9-1/4% per annum
from August 4, 1993, or from the most recent Interest Payment Date to which
interest has been paid or duly provided for, payable on February 1, 1994 and
semi-annually thereafter on February 1 and August 1 in each year and at said
Stated Maturity, until the principal thereof is paid or duly provided for.

         The principal of (and premium, if any, on) and interest on the
Securities shall be payable at the office or agency of the Company maintained
for such purpose in The City of Atlanta, or at such other office or agency of
the Company as may be maintained for such purpose; provided, however, that, at
the option of the Company, interest may be paid by check mailed to addresses
of the Persons entitled thereto as such addresses shall appear on the Security
Register.

         The Securities shall be redeemable as provided in Article Eleven.

         The Securities shall be subordinated in right of payment to Senior
Indebtedness as provided in Article Fourteen.

         SECTION 302.   Denominations.

         The Securities shall be issuable only in registered form without
coupons and only in denominations of $1,000 and any integral multiple thereof.

         SECTION 303.   Execution, Authentication, Delivery and Dating.

         The Securities shall be executed on behalf of the Company by its
Chairman, its President or a Vice President, under its corporate seal
reproduced thereon and attested by its Secretary or an Assistant Secretary.
The signature of any of these officers on the Securities may be manual or
facsimile signatures of the present or any future such authorized officer and
may be imprinted or otherwise reproduced on the Securities.

         Securities bearing the manual or facsimile signatures of individuals
who were at any time the proper officers of the Company shall bind the
Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities
or did not hold such offices at the date of such Securities.

         At any time and from time to time after the execution and delivery of
this Indenture, the Company may deliver Securities executed by the Company to
the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities, and the Trustee in accordance
with such Company Order shall authenticate and deliver such Securities.

         Each Security shall be dated the date of its authentication.

         No Security shall be entitled to any benefit under this Indenture or
be valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein
duly executed by the Trustee by manual signature of an authorized officer, and
such certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder and is entitled to the benefits of this Indenture.

         In case the Company or any Guarantor, pursuant to Article Eight,
shall be consolidated, amalgamated or merged with or into any other Person or
shall be continued or redomesticated under the laws of a jurisdiction other
than Bermuda or shall convey, transfer, lease or otherwise dispose of all or
substantially all of its properties and assets to any Person, and the
successor Person resulting from such consolidation or amalgamation, or
surviving such merger, continuance or redomestication, or into which the
Company or such Guarantor shall have been merged, or the Person which shall
have received a conveyance, transfer, lease or other disposition as aforesaid,
shall have executed an indenture supplemental hereto with the Trustee pursuant
to Article Eight, any of the Securities authenticated or delivered prior to
such consolidation, amalgamation, merger, continuance, redomestication,
conveyance, transfer, lease or other disposition may, from time to time, at
the request of the successor Person, be exchanged for other Securities
executed in the name of the successor Person with such changes in phraseology
and form as may be appropriate, but otherwise in substance of like tenor as the
Securities surrendered for such exchange and of like principal amount; and the
Trustee, upon Company Request of the successor Person, shall authenticate and
deliver Securities as specified in such request for the purpose of such
exchange.  If Securities shall at any time be authenticated and delivered in
any new name of a successor Person pursuant to this Section in exchange or
substitution for or upon registration of transfer of any Securities, such
successor Person, at the option of the Holders but without expense to them,
shall provide for the exchange of all Securities at the time Outstanding for
Securities authenticated and delivered in such new name.

         SECTION 304.   Temporary Securities.

         Pending the preparation of definitive Securities, the Company may
execute, the Guarantors may endorse Guarantees on, and upon Company Order the
Trustee shall authenticate and deliver temporary Securities which are printed,
lithographed, typewritten, mimeographed or otherwise produced, in any
authorized denomination, substantially of the tenor of the definitive
Securities in lieu of which they are issued and with such appropriate
insertions, omissions, substitutions and other variations as the officers
executing such Securities may determine, as conclusively evidenced by their
execution of such Securities.

         If temporary Securities are issued, the Company will cause definitive
Securities to be prepared without unreasonable delay.  After the preparation
of definitive Securities, the temporary Securities shall be exchangeable for
definitive Securities upon surrender of the temporary Securities at the office
or agency of the Company designated for such purpose pursuant to Section 1002,
without charge to the Holder.  Upon surrender for cancellation of any one or
more temporary Securities, the Company shall execute, the Guarantors shall
endorse Guarantees on, and the Trustee shall authenticate and deliver in
exchange therefor a like principal amount of definitive Securities of
authorized denominations.  Until so exchanged, the temporary Securities shall
in all respects be entitled to the same benefits under this Indenture as
definitive Securities.

         SECTION 305.   Registration, Registration of Transfer and Exchange.

         The Company shall cause to be kept at the Corporate Trust Office of
the Trustee a register (the register maintained in such office and in any
other office or agency designated pursuant to Section 1002 being herein
sometimes referred to as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Securities and of transfers of Securities.  The Security
Register shall be in written form or any other form capable of being converted
into written form within a reasonable time.  At all reasonable times, the
Security Register shall be open to inspection by the Trustee.  The Trustee is
hereby initially appointed as security registrar (the "Security Registrar")
for the purpose of registering Securities and transfers of Securities as
herein provided.

         Upon surrender for registration of transfer of any Security at the
office or agency of the Company designated pursuant to Section 1002, the
Company shall execute, the Guarantors shall endorse Guarantees on, and the
Trustee shall authenticate and deliver, in the name of the designated
transferee or transferees, one or more new Securities of any authorized
denomination or denominations of a like aggregate principal amount.

         At the option of the Holder, Securities may be exchanged for other
Securities of any authorized denomination and of a like aggregate principal
amount, upon surrender of the Securities to be exchanged at such office or
agency.  Whenever any Securities are so surrendered for exchange, the Company
shall execute, the Guarantors shall endorse Guarantees on, and the Trustee
shall authenticate and deliver the Securities which the Holder making the
exchange is entitled to receive.

         All Securities issued upon any registration of transfer or exchange
of Securities shall be the valid obligations of the Company and the
Guarantors, evidencing the same debt, and entitled to the same benefits under
this Indenture, as the Securities surrendered upon such registration of
transfer or exchange.

         Every Security presented or surrendered for registration of transfer
or for exchange shall (if so required by the Company or the Security
Registrar) be duly endorsed, or be accompanied by a written instrument of
transfer, in form satisfactory to the Company and the Security Registrar, duly
executed by the Holder thereof or his attorney duly authorized in writing.

         No service charge shall be made for any registration of transfer or
exchange or redemption of Securities, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be
imposed in connection with any registration of transfer or exchange of
Securities, other than exchanges pursuant to Section 304, 906, 1010 or 1108
not involving any transfer.

         The Company shall not be required (i) to issue, register the transfer
of or exchange any Security during a period beginning at the opening of
business 15 days before the selection of Securities to be redeemed under
Section 1104 and ending at the close of business on the day of such mailing of
the relevant notice of redemption, or (ii) to register the transfer of or
exchange any Security so selected for redemption in whole or in part, except
the unredeemed portion of any Security being redeemed in part.

         SECTION 306.   Mutilated, Destroyed, Lost and Stolen Securities.

         If (i) any mutilated Security is surrendered to the Trustee, or (ii)
the Company and the Trustee receive evidence to their satisfaction of the
destruction, loss or theft of any Security, and there is delivered to the
Company and the Trustee such security or indemnity as may be required by them
to save each of them harmless, then, in the absence of notice to the Company
or the Trustee that such Security has been acquired by a bona fide purchaser,
the Company shall execute, the Guarantors shall endorse a Guarantee on and
upon Company Order the Trustee shall authenticate and deliver, in exchange for
any such mutilated Security or in lieu of any such destroyed, lost or stolen
Security, a new Security of like tenor and principal amount, bearing a number
not contemporaneously outstanding.

         In case any such mutilated, destroyed, lost or stolen Security has
become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

         Upon the issuance of any new Security under this Section, the Company
may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

         Every new Security issued pursuant to this Section in lieu of any
destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company and the Guarantors, whether or not the
destroyed, lost or stolen Security shall be at any time enforceable by anyone,
and shall be entitled to all benefits of this Indenture equally and
proportionately with any and all other Securities duly issued hereunder.

         The provisions of this Section are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Securities.

         SECTION 307.   Payment of Interest; Interest Rights Preserved.

         Interest on any Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in
whose name such Security (or one or more Predecessor Securities) is registered
at the close of business on the Regular Record Date for such interest at the
office or agency of the Company maintained for such purpose pursuant to
Section 1002; provided, however, that each installment of interest may at the
Company's option be paid by (i) mailing a check for such interest, payable to
or upon the written order of the Person entitled thereto pursuant to Section
308, to the address of such Person as it appears in the Security Register or
(ii) transfer to an account maintained by the payee located in the United
States.

         Any interest on any Security which is payable, but is not punctually
paid or duly provided for, on any Interest Payment Date shall forthwith cease
to be payable to the Holder on the Regular Record Date by virtue of having
been such Holder, and such defaulted interest and (to the extent lawful)
interest on such defaulted interest at the rate borne by the Securities (such
defaulted interest and interest thereon herein collectively called "Defaulted
Interest") may be paid by the Company, at its election in each case, as
provided in clause (1) or (2) below:

         (1)   The Company may elect to make payment of any Defaulted Interest
   to the Persons in whose names the Securities (or their respective
   Predecessor Securities) are registered at the close of business on a
   Special Record Date for the payment of such Defaulted Interest, which shall
   be fixed in the following manner.  The Company shall notify the Trustee in
   writing of the amount of Defaulted Interest proposed to be paid on each
   Security and the date of the proposed payment, and at the same time the
   Company shall deposit with the Trustee an amount of money equal to the
   aggregate amount proposed to be paid in respect of such Defaulted Interest
   or shall make arrangements satisfactory to the Trustee for such deposit
   prior to the date of the proposed payment, such money when deposited to be
   held in trust for the benefit of the Persons entitled to such Defaulted
   Interest as in this clause provided.  Thereupon the Trustee shall fix a
   Special Record Date for the payment of such Defaulted Interest which shall
   be not more than 15 days and not less than 10 days prior to the date of the
   proposed payment and not less than 10 days after the receipt by the Trustee
   of the notice of the proposed payment.  The Trustee shall promptly notify
   the Company of such Special Record Date, and in the name and at the expense
   of the Company, shall cause notice of the proposed payment of such
   Defaulted Interest and the Special Record Date therefor to be given in the
   manner provided for in Section 106, not less than 10 days prior to such
   Special Record Date.  Notice of the proposed payment of such Defaulted
   Interest and the Special Record Date therefor having been so given, such
   Defaulted Interest shall be paid to the Persons in whose names the
   Securities (or their respective Predecessor Securities) are registered at
   the close of business on such Special Record Date and shall no longer be
   payable pursuant to the following clause (2).

         (2)   The Company may make payment of any Defaulted Interest in any
   other lawful manner not inconsistent with the requirements of any
   securities exchange on which the Securities may be listed, and upon such
   notice as may be required by such exchange, if, after notice given by the
   Company to the Trustee of the proposed payment pursuant to this clause,
   such manner of payment shall be deemed practicable by the Trustee.

         Subject to the foregoing provisions of this Section, each Security
delivered under this Indenture upon registration of transfer of or in exchange
for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue, which were carried by such other Security.

         SECTION 308.   Persons Deemed Owners.

         Prior to the due presentment of a Security for registration of
transfer, the Company, the Guarantors, the Trustee and any agent of the
Company, any Guarantor or the Trustee may treat the Person in whose name such
Security is registered as the owner of such Security for the purpose of
receiving payment of principal of (and premium, if any, on) and (subject to
Sections 305 and 307) interest on such Security and for all other purposes
whatsoever, whether or not such Security be overdue, and none of the Company,
any Guarantor, the Trustee or any agent of the Company, any Guarantor or the
Trustee shall be affected by notice to the contrary.

         SECTION 309.   Cancellation.

         All Securities surrendered for payment, redemption, registration of
transfer or exchange shall, if surrendered to any Person other than the
Trustee, be delivered to the Trustee and shall be promptly cancelled by it.
The Company may at any time deliver to the Trustee for cancellation any
Securities previously authenticated and delivered hereunder which the Company
may have acquired in any manner whatsoever, and may deliver to the Trustee (or
to any other Person for delivery to the Trustee) for cancellation any
Securities previously authenticated hereunder which the Company has not issued
and sold, and all Securities so delivered shall be promptly cancelled by the
Trustee.  If the Company shall so acquire any of the Securities, however, such
acquisition shall not operate as a redemption or satisfaction of the
indebtedness represented by such Securities unless and until the same are
surrendered to the Trustee for cancellation.  No Securities shall be
authenticated in lieu of or in exchange for any Securities cancelled as
provided in this Section, except as expressly permitted by this Indenture.  All
cancelled Securities held by the Trustee shall be disposed of by the Trustee
in accordance with its customary procedures and certification of their
disposal delivered to the Company unless by Company Order the Company shall
direct that cancelled Securities be returned to it.

         SECTION 310.   Computation of Interest.

         Interest on the Securities shall be computed on the basis of a
360-day year of twelve 30-day months.

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

         SECTION 401.   Satisfaction and Discharge of Indenture.

         This Indenture shall upon Company Request cease to be of further
effect (except as to surviving rights of registration of transfer or exchange
of Securities herein expressly provided for) and the Trustee, at the expense
of the Company, shall execute proper instruments acknowledging satisfaction
and discharge of this Indenture when

         (1)   either

               (a)   all Securities theretofore authenticated and delivered
         (other than (i) Securities which have been destroyed, lost or stolen
         and which have been replaced or paid as provided in Section 306 and
         (ii) Securities for whose payment money has theretofore been
         deposited in trust with the Trustee or any Paying Agent or segregated
         and held in trust by the Company and thereafter repaid to the Company
         or discharged from such trust, as provided in Section 1003) have been
         delivered to the Trustee for cancellation; or

               (b)   all such Securities not theretofore delivered to the
         Trustee for cancellation

                     (i) have become due and payable, or

                     (ii)  will become due and payable at their Stated
               Maturity within one year, or

                     (iii) are to be called for redemption within one year
               under arrangements satisfactory to the Trustee for the giving
               of notice of redemption by the Trustee in the name, and at the
               expense, of the Company,

         and the Company in the case of (i), (ii) or (iii) above, has
         irrevocably deposited or caused to be deposited with the Trustee as
         trust funds in trust for the purpose an amount sufficient to pay and
         discharge the entire indebtedness on such Securities not theretofore
         delivered to the Trustee for cancellation, for principal (and
         premium, if any) and interest to the date of such deposit (in the
         case of Securities which have become due and payable) or to the
         Stated Maturity or Redemption Date, as the case may be;

         (2)   the Company has paid or caused to be paid all other sums payable
   hereunder by the Company; and

         (3)   the Company has delivered to the Trustee an Officers'
   Certificate and an Opinion of Counsel, each stating that (i) all conditions
   precedent herein provided for relating to the satisfaction and discharge of
   this Indenture have been complied with and (ii) such satisfaction and
   discharge will not result in a breach or violation of, or constitute a
   default hereunder or under any other material agreement or instrument to
   which the Company or any Guarantor is a party or by which the Company or
   any Guarantor is bound.

         Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company and the Guarantors to the Trustee under Section 606
and, if money shall have been deposited with the Trustee pursuant to subclause
(b) of clause (1) of this Section, the obligations of the Trustee under
Section 402 and the last paragraph of Section 1003 shall survive.

         SECTION 402.   Application of Trust Money.

         Subject to the provisions of the last paragraph of Section 1003, all
money deposited with the Trustee pursuant to Section 401 shall be held in
trust and applied by it, in accordance with the provisions of the Securities
and this Indenture, to the payment, either directly or through any Paying
Agent (including the Company acting as its own Paying Agent), as the Trustee
may determine, to the Persons entitled thereto, of the principal (and premium,
if any) and interest for whose payment such money has been deposited with the
Trustee; but such money need not be segregated from other funds except to the
extent required by law.

                                 ARTICLE FIVE

                                   REMEDIES

         SECTION 501.   Events of Default.

         "Event of Default", wherever used herein, means any one of the
following events (whatever the reason for such  Event of Default and whether
it shall be occasioned by the provisions of Article Thirteen or Fourteen or be
voluntary or involuntary or be effected by operation of law or pursuant to any
judgment, decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

         (1)   default in the payment of any interest on any Security when it
   becomes due and payable, and continuance of such default for a period of 30
   days; or

         (2)   default in the payment of the principal of (or premium, if any,
   on) any Security at its Maturity; or

         (3)   (i) default in the performance, or breach, of any covenant or
   warranty of the Company, ADT Limited or any of the other Restricted
   Subsidiaries in this Indenture (other than a default in the performance, or
   breach, of a covenant or warranty which is specifically dealt with
   elsewhere in paragraphs (1) or (2) of this Section 501 or in clauses (ii)
   and (iii) of this paragraph (3)), and continuance of such default or breach
   for a period of 60 days after there has been given, by registered or
   certified mail, to the Company by the Trustee or to the Company and the
   Trustee by the Holders of at least 25% in principal amount of the
   Outstanding Securities a written notice specifying such default or breach;
   (ii) default in the performance or breach of the provisions of Article
   Eight hereof or (iii) the Company shall have failed to make or consummate a
   Change in Control Offer in accordance with the provisions of Section 1010
   hereof; or

         (4)   (i) there shall have occurred one or more defaults by the
   Company, ADT Limited or any of the other Restricted Subsidiaries in the
   payment of the principal of (or premium, if any, on) Indebtedness
   aggregating $15,000,000 or more when the same becomes due and payable at
   its final maturity or (ii) Indebtedness of the Company, ADT Limited or any
   of the other Restricted Subsidiaries aggregating $15,000,000 or more shall
   have been accelerated or otherwise declared due and payable, or required to
   be prepaid or repurchased (other than by regularly scheduled required
   prepayment or prepayments in respect of asset sales, excess cash flow or
   new financings), including amounts declared due and payable by virtue of
   any demand for cash collateralization, aggregating $15,000,000 or more, of
   any letter of credit prior to its final maturity; or

         (5)   any Person entitled to take the actions described in this
   Section 501(5), after the occurrence of any event of default under any
   agreement or instrument evidencing any Indebtedness in excess of
   $15,000,000 in the aggregate (which, in the case of interest rate contracts
   or exchange rate contracts, shall be deemed to be the net Indebtedness
   outstanding under such contract on the date or during any period during
   which any action described in this Section 501(5) is taken) of the Company,
   ADT Limited or any of the other Restricted Subsidiaries, shall notify the
   Trustee of the intended sale or disposition of any assets of the Company,
   ADT Limited or any of the other Restricted Subsidiaries that have been
   pledged to or for the benefit of such Person to secure such Indebtedness or
   shall commence proceedings, or take any action (including by way of
   set-off) to retain in satisfaction of any Indebtedness, or to collect on,
   seize, dispose of or apply, any such assets of the Company, ADT Limited or
   any of the other Restricted Subsidiaries (including funds on deposit or
   held pursuant to lock-box and other similar arrangements), pursuant to the
   terms of any agreement or instrument evidencing any such Indebtedness of
   the Company, ADT Limited or any such other Restricted Subsidiary or in
   accordance with applicable law; or

         (6)   final judgments or orders rendered against the Company, ADT
   Limited or any of the other Restricted Subsidiaries that require the
   payment in money, either individually or in an aggregate amount, of more
   than $15,000,000 (net of amounts covered by insurance) and either (i) an
   enforcement proceeding shall have been commenced by any creditor upon such
   judgment or order or (ii) there shall have been a period of 30 consecutive
   days during which a stay of enforcement of such judgment or order, by
   reason of pending appeal or otherwise, was not in effect; or

         (7)   the entry of a decree or order by a court having jurisdiction
   in the premises adjudging the Company, ADT Limited or any other Material
   Restricted Subsidiary a bankrupt or insolvent, or approving as properly
   filed a petition seeking reorganization, arrangement, adjustment or
   composition of or in respect of the Company, ADT Limited or any other
   Material Restricted Subsidiary under the Federal Bankruptcy Code or any
   other applicable federal or state law, or appointing a receiver,
   liquidator, assignee, trustee, sequestrator (or other similar official) of
   the Company, ADT Limited or any other Material Restricted Subsidiary or of
   any substantial part of its property, or ordering the winding up or
   liquidation of its affairs, and the continuance of any such decree or order
   unstayed and in effect for a period of 90 consecutive days; or

         (8)   the institution by the Company, ADT Limited or any other
   Material Restricted Subsidiary of proceedings to be adjudicated a bankrupt
   or insolvent, or the consent by it to the institution of bankruptcy or
   insolvency proceedings against it, or the filing by it of a petition or
   answer or consent seeking reorganization or relief under the Federal
   Bankruptcy Code or any other applicable federal or state law, or the
   consent by it to the filing of any such petition or to the appointment of a
   receiver, liquidator, assignee, trustee, sequestrator (or other similar
   official) of the Company, ADT Limited or any other Material Restricted
   Subsidiary or of any substantial part of its property, or the making by it
   of an assignment for the benefit of creditors, or the admission by it in
   writing of its inability to pay its debts generally as they become due; or

         (9)   any Guarantee shall for any reason cease to be, or be asserted
   in writing by any Guarantor thereof or the Company not to be, in full force
   and effect, and enforceable in accordance with its terms (other than by
   reason of the termination of this Indenture or the release of any such
   Guarantee in accordance with this Indenture); provided, however, that if
   the Company or any Guarantor asserts in writing that any Guarantee is not
   in full force and effect and enforceable in accordance with its terms, such
   assertion shall not constitute an Event of Default for purposes of this
   paragraph (10) if (x) such written assertion is accompanied by an Opinion
   of Counsel to the effect that, as a matter of law, the defect or defects
   rendering such Guarantee unenforceable can be remedied within 10 days of
   the date of such assertion, (y) the Company or such Guarantor delivers an
   Officers' Certificate to the effect that the Company or such Guarantor
   represents that such defect or defects shall be so remedied within such
   10-day period, and (z) such defect or defects are in fact so remedied
   within such 10-day period.

         SECTION 502.   Acceleration of Maturity; Rescission and Annulment.

         If an Event of Default (other than an Event of Default specified in
Section 501(7) or 501(8)) occurs and is continuing, then and in every such
case the Trustee or the Holders of not less than 25% in principal amount of
the Securities Outstanding may declare all unpaid principal of (and premium,
if any, on) and any accrued interest on all the Securities to be due and
payable immediately, by a notice in writing to the Company and, if the New
Bank Credit Agreement is in effect, to the Agent (and to the Trustee if given
by Holders), and upon any such declaration such principal amount shall become
due and payable (i) if the New Bank Credit Agreement is not in effect,
immediately or (ii) if the New Bank Credit Agreement is in effect, upon the
earlier of (x) five Business Days after receipt by the Agent of such notice
and (y) acceleration of Indebtedness under the New Bank Credit Agreement.  If
an Event of Default specified in Section 501(7) or 501(8) occurs and is
continuing, then the principal amount of all the Securities shall ipso facto
become and be immediately due and payable without any declaration or other act
on the part of the Trustee or any Holder.

         At any time after a declaration of acceleration has been made but
before a judgment or decree for payment of the money due has been obtained by
the Trustee as hereinafter in this Article provided, the Holders of at least a
majority in aggregate principal amount of the Securities Outstanding, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if:

         (1)   the Company has paid or deposited with the Trustee a sum
   sufficient to pay,

               (A)   all overdue interest on all Outstanding Securities,

               (B)   the principal of (and premium, if any, on) any Outstanding
         Securities which have become due otherwise than by such declaration of
         acceleration, and interest on such unpaid principal at the rate borne
         by the Securities,

               (C)   to the extent that payment of such interest is lawful,
         interest on overdue interest at the rate borne by the Securities, and

               (D)   all sums paid or advanced by the Trustee hereunder and the
         reasonable compensation, expenses, disbursements and advances of the
         Trustee, its agents and counsel; and

         (2)   all Events of Default, other than the non-payment of amounts of
   principal of the Securities that have become due solely by such declaration
   of acceleration, have been cured or waived as provided in Section 513.

No such rescission shall affect any subsequent default or impair any right
consequent thereon.

         Notwithstanding the preceding paragraph, in the event of a
declaration of acceleration in respect of the Securities because an Event of
Default specified in Section 501(4) shall have occurred and be continuing,
such declaration of acceleration shall be automatically annulled if the
holders of the Indebtedness that is the subject of such Event of Default have
rescinded their declaration of acceleration in respect of such Indebtedness,
and written notice of such rescission shall have been given to the Trustee by
the Company and countersigned by the holders of such Indebtedness or a
trustee, fiduciary or agent for such holders, within 60 days after such
declaration of acceleration in respect of the Securities, and no other Event
of Default has occurred during such 60-day period which has not been cured or
waived during such period.

         Upon a determination by the Company that the New Bank Credit
Agreement is no longer in effect, the Company shall promptly give to the
Trustee written notice thereof, which notice shall be countersigned by the
Agent.  Unless and until the Trustee shall have received such written notice
with respect to the New Bank Credit Agreement, the Trustee, subject to the TIA
Sections 315(a) through 315(d), shall be entitled in all respects to assume
that the New Bank Credit Agreement is in effect (unless a Responsible Officer
within the Corporate Trust Office of the Trustee charged with responsibility
for administering this trust shall have actual knowledge to the contrary).

         SECTION 503.   Collection of Indebtedness and Suits for Enforcement
by Trustee.

         The Company and each Guarantor covenant that if

         (a)   default is made in the payment of any installment of interest
   on any Security when such interest becomes due and payable and such default
   continues for a period of 30 days, or

         (b)   default is made in the payment of the principal of (or premium,
   if any, on) any Security at the Maturity thereof,

the Company and such Guarantor will, upon demand of the Trustee, pay to the
Trustee for the benefit of the Holders of such Securities, the whole amount
then due and payable on such Securities for principal (and premium, if any)
and interest, and interest on any overdue principal (and premium, if any) and,
to the extent that payment of such interest shall be legally enforceable, upon
any overdue installment of interest, at the rate borne by the Securities, and,
in addition thereto, such further amount as shall be sufficient to cover the
costs and expenses of collection, including the reasonable compensation,
expenses, disbursements and advances of the Trustee, its agents and counsel.

         If the Company or any Guarantor fails to pay such amounts forthwith
upon such demand, the Trustee, in its own name as trustee of an express trust,
may institute a judicial proceeding for the collection of the sums so due and
unpaid, may prosecute such proceeding to judgment or final decree and may
enforce the same against the Company or such Guarantor and collect the moneys
adjudged or decreed to be payable in the manner provided by law out of the
property of the Company or such Guarantor, wherever situated.

         If an Event of Default occurs and is continuing, the Trustee may in
its discretion proceed to protect and enforce its rights and the rights of the
Holders by such appropriate private or judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, whether for
the specific enforcement of any covenant or agreement in this Indenture or in
aid of the exercise of any power granted herein, including, without
limitation, seeking recourse against any Guarantor pursuant to the terms of
its Guarantee, or to enforce any other proper remedy.

         SECTION 504.   Trustee May File Proofs of Claim.

         In case of the pendency of any receivership, insolvency, liquidation,
bankruptcy, reorganization, arrangement, adjustment, composition or other
judicial proceeding relative to the Company or any Guarantor or the property
of the Company or any Guarantor or their creditors, the Trustee (irrespective
of whether the principal of the Securities shall then be due and payable as
therein expressed or by declaration or otherwise and irrespective of whether
the Trustee shall have made any demand on the Company or any Guarantor for the
payment of overdue principal, premium, if any, or interest) shall be entitled
and empowered, by intervention in such proceeding or otherwise,

         (i)   to file and prove a claim for the whole amount of principal
   (and premium, if any) and interest owing and unpaid in respect of the
   Securities and to file such other papers or documents as may be necessary
   or advisable in order to have the claims of the Trustee (including any
   claim for the reasonable compensation, expenses, disbursements and advances
   of the Trustee, its agents and counsel) and of the Holders allowed in such
   judicial proceeding, and

         (ii)  to collect and receive any moneys or other property payable or
   deliverable on any such claims and to distribute the same;

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay
the Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any
other amounts due the Trustee under Section 606.

         Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the
Securities or the rights of any Holder thereof, or to authorize the Trustee to
vote in respect of the claim of any Holder in any such proceeding.

         SECTION 505.   Trustee May Enforce Claims Without Possession of
Securities.

         All rights of action and claims under this Indenture, the Securities
and the Guarantees may be prosecuted and enforced by the Trustee without the
possession of any of the Securities or the production thereof in any
proceeding relating thereto, and any such proceeding instituted by the Trustee
shall be brought in its own name and as trustee of an express trust, and any
recovery of judgment shall, after provision for the payment of the reasonable
compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel, be for the ratable benefit of the Holders of the Securities in
respect of which such judgment has been recovered.

         SECTION 506.   Application of Money Collected.

         Subject to Articles Thirteen and Fourteen, any money collected by the
Trustee pursuant to this Article shall be applied in the following order, at
the date or dates fixed by the Trustee and, in case of the distribution of
such money on account of principal (or premium, if any) or interest, upon
presentation of the Securities and the notation thereon of the payment if only
partially paid and upon surrender thereof if fully paid:

         FIRST:  To the payment of all amounts due the Trustee under Section
   606;

         SECOND:  To the payment of the amounts then due and unpaid for
   principal of (and premium, if any, on,) and interest on the Securities in
   respect of which or for the benefit of which such money has been collected,
   ratably, without preference or priority of any kind, according to the
   amounts due and payable on such Securities for principal (and premium, if
   any) and interest, respectively; and

         THIRD:  The balance, if any, to the Person or Persons entitled
   thereto.

         SECTION 507.   Limitation on Suits.

         No Holder of any Securities shall have any right to institute any
proceeding, judicial or otherwise, with respect to this Indenture, or for the
appointment of a receiver or trustee, or for any other remedy hereunder, unless

         (1)   such Holder has previously given written notice to the Trustee
   of a continuing Event of Default;

         (2)   the Holders of not less than 25% in principal amount of the
   Outstanding Securities shall have made written request to the Trustee to
   institute proceedings in respect of such Event of Default in its own name
   as Trustee hereunder;

         (3)   such Holder or Holders have offered to the Trustee reasonable
   indemnity against the costs, expenses and liabilities to be incurred in
   compliance with such request;

         (4)   the Trustee for 60 days after its receipt of such notice,
   request and offer of indemnity has failed to institute any such proceeding;
   and

         (5)   no direction inconsistent with such written request has been
   given to the Trustee during such 60-day period by the Holders of a majority
   or more in principal amount of the Outstanding Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other
Holders, or to obtain or to seek to obtain priority or preference over any
other Holders or to enforce any right under this Indenture, except in the
manner herein provided and for the equal and ratable benefit of all the
Holders.

         SECTION 508.   Unconditional Right of Holders to Receive Principal,
Premium and Interest.

         Notwithstanding any other provision in this Indenture, the Holder of
any Security shall have the right, which is absolute and unconditional, to
receive payment, as provided herein (including, if applicable, Article Twelve)
and in such Security of the principal of (and premium, if any, on) and
(subject to Section 307) interest on, such Security on the respective Stated
Maturities expressed in such Security (or, in the case of redemption, on the
Redemption Date) and to institute suit for the enforcement of any such
payment, and such rights shall not be impaired without the consent of such
Holder.

         SECTION 509.   Restoration of Rights and Remedies.

         If the Trustee or any Holder has instituted any proceeding to enforce
any right or remedy under this Indenture and such proceeding has been
discontinued or abandoned for any reason, or has been determined adversely to
the Trustee or to such Holder, then and in every such case, subject to any
determination in such proceeding, the Company, the Guarantors, the Trustee and
the Holders shall be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

         SECTION 510.   Rights and Remedies Cumulative.

         Except as otherwise provided with respect to the replacement or
payment of mutilated, destroyed, lost or stolen Securities in the last
paragraph of Section 306, no right or remedy herein conferred upon or reserved
to the Trustee or to the Holders is intended to be exclusive of any other
right or remedy, and every right and remedy shall, to the extent permitted by
law, be cumulative and in addition to every other right and remedy given
hereunder or now or hereafter existing at law or in equity or otherwise.  The
assertion or employment of any right or remedy hereunder, or otherwise, shall
not prevent the concurrent assertion or employment of any other appropriate
right or remedy.

         SECTION 511.   Delay or Omission Not Waiver.

         No delay or omission of the Trustee or of any Holder of any Security
to exercise any right or remedy accruing upon any Event of Default shall
impair any such right or remedy or constitute a waiver of any such Event of
Default or an acquiescence therein.  Every right and remedy given by this
Article or by law to the Trustee or to the Holders may be exercised from time
to time, and as often as may be deemed expedient, by the Trustee or by the
Holders, as the case may be.

         SECTION 512.   Control by Holders.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities shall have the right to direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred on the Trustee, provided that

         (1)   such direction shall not be in conflict with any rule of law or
   with this Indenture,

         (2)   the Trustee may take any other action deemed proper by the
   Trustee which is not inconsistent with such direction, and

         (3)   the Trustee need not take any action which might involve it in
   personal liability or be unjustly prejudicial to the Holders not consenting.

         SECTION 513.   Waiver of Past Defaults.

         The Holders of not less than a majority in principal amount of the
Outstanding Securities may on behalf of the Holders of all the Securities
waive any past default hereunder and its consequences, except a default

         (1)   in respect of the payment of the principal of (or premium, if
   any, on) or interest on any Security, or

         (2)   in respect of a covenant or provision hereof which under
   Article Nine cannot be modified or amended without the consent of the
   Holder of each Outstanding Security affected.

         Upon any such waiver, such default shall cease to exist, and any
Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or Event of Default or impair any right consequent
thereon.

         SECTION 514.   Waiver of Stay or Extension Laws.

         The Company and each Guarantor covenant (to the extent that they may
lawfully do so) that they will not at any time insist upon, or plead, or in
any manner whatsoever claim or take the benefit or advantage of, any stay or
extension law wherever enacted, now or at any time hereafter in force, which
may affect the covenants or the performance of this Indenture; and the Company
and each Guarantor (to the extent that they may lawfully do so) hereby
expressly waive all benefit or advantage of any such law and covenant that
they will not hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted.

         SECTION 515.   Undertaking for Costs.

         All parties to this Indenture agree, and each Holder of any Security
by his acceptance thereof shall be deemed to have agreed, that any court may
in its discretion require, in any suit for the enforcement of any right or
remedy under this Indenture, or in any suit against the Trustee for any action
taken, suffered or omitted by it as Trustee, the filing by any party litigant
in such suit of an undertaking to pay the costs of such suit, and that such
court may in its discretion assess reasonable costs, including reasonable
attorneys' fees, against any party litigant in such suit, having due regard to
the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to any suit
instituted by the Trustee, to any suit instituted by any Holder, or group of
Holders, holding in the aggregate more than 10% in principal amount of the
Outstanding Securities, or to any suit instituted by any Holder for the
enforcement of the payment of the principal of (premium, if any, on) or
interest on any Security on or after the respective Stated Maturities
expressed in such Security (or, in the case of redemption, on or after the
Redemption Date).

                                  ARTICLE SIX

                                  THE TRUSTEE

         SECTION 601.   Notice of Defaults.

         Within 90 days after the occurrence of any Default hereunder, the
Trustee shall transmit in the manner and to the extent provided in TIA Section
313(c), notice of such Default hereunder known to the Trustee, unless such
Default shall have been cured or waived; provided, however, that, except in
the case of a Default in the payment of the principal of (or premium, if any,
on) or interest on any Security or in the payment of any sinking fund
installment, the Trustee shall be protected in withholding such notice if and
so long as the board of directors, the executive committee or a trust
committee of directors and/or Responsible Officers of the Trustee in good
faith determines that the withholding of such notice is in the interest of the
Holders; and provided further that in the case of any Default of the character
specified in clause (i) of Section 501(3) no such notice to Holders shall be
given until at least 60 days after the occurrence thereof.

         The Trustee shall not be deemed to have knowledge of any Default or
Event of Default except (i) any Event of Default occurring pursuant to Section
501(1) or 501(2) of this Indenture or (ii) any Default or Event of Default of
which the Trustee shall have received written notification or obtained actual
knowledge, and such notification shall not be deemed to include receipt of
information obtained in any report or other documents furnished under Section
703 of this Indenture, which reports and documents the Trustee shall have no
duty to examine.

         SECTION 602.   Certain Rights of Trustee.

         Subject to the provisions of TIA Sections 315(a) through 315(d):

         (1)   the Trustee may rely and shall be protected in acting or
   refraining from acting upon any resolution, certificate, statement,
   instrument, opinion, report, notice, request, direction, consent, order,
   bond, debenture, note, other evidence of indebtedness or other paper or
   document believed by it to be genuine and to have been signed or presented
   by the proper party or parties;

         (2)   any request or direction of the Company mentioned herein shall
   be sufficiently evidenced by a Company Request or Company Order and any
   resolution of the board of directors of the Company may be sufficiently
   evidenced by a Board Resolution;

         (3)   whenever in the administration of this Indenture the Trustee
   shall deem it desirable that a matter be proved or established prior to
   taking, suffering or omitting any action hereunder, the Trustee (unless
   other evidence be herein specifically prescribed) may, in the absence of
   bad faith on its part, rely upon an Officers' Certificate;

         (4)   the Trustee may consult with counsel and the written advice of
   such counsel or any Opinion of Counsel shall be full and complete
   authorization and protection in respect of any action taken, suffered or
   omitted by it hereunder in good faith and in reliance thereon;

         (5)   the Trustee shall be under no obligation to exercise any of the
   rights or powers vested in it by this Indenture at the request or direction
   of any of the Holders pursuant to this Indenture, unless such Holders shall
   have offered to the Trustee reasonable security or indemnity against the
   costs, expenses and liabilities which might be incurred by it in compliance
   with such request or direction;

         (6)   the Trustee shall not be bound to make any investigation into
   the facts or matters stated in any resolution, certificate, statement,
   instrument, opinion, report, notice, request, direction, consent, order,
   bond, debenture, note, other evidence of indebtedness or other paper or
   document, but the Trustee, in its discretion, may make such further inquiry
   or investigation into such facts or matters as it may see fit, and, if the
   Trustee shall determine to make such further inquiry or investigation, it
   shall be entitled to examine the books, records and premises of the Company
   or any Guarantor, personally or by agent or attorney;

         (7)   the Trustee may execute any of the trusts or powers hereunder
   or perform any duties hereunder either directly or by or through agents or
   attorneys and the Trustee shall not be responsible for any misconduct or
   negligence on the part of any agent or attorney appointed with due care by
   it hereunder;

         (8)   the Trustee shall not be liable for any action taken, suffered
   or omitted by it in good faith and believed by it to be authorized or
   within the discretion or rights or powers conferred upon it by this
   Indenture; and

         (9)   the Trustee shall not be deemed to have knowledge of the
   occurrence of a Change in Control or of the fact that the amount of Excess
   Proceeds equals or exceeds $20,000,000 until the Trustee receives written
   notice thereof as required by this Indenture.

         The Trustee shall not be required to expend or risk its own funds or
otherwise incur any financial liability in the performance of any of its
duties hereunder, or in the exercise of any of its rights or powers if it
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it.

         SECTION 603.   Trustee Not Responsible for Recitals or Issuance of
Securities.

         The recitals contained herein, in the Securities and in the
Guarantees, except for the Trustee's certificates of authentication, shall be
taken as the statements of the Company and each Guarantor, and the Trustee
assumes no responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this Indenture, the
Securities or the Guarantees, except that the Trustee represents that it is
duly authorized to execute and deliver this Indenture, authenticate the
Securities and perform its obligations hereunder and that the statements made
by it in a Statement of Eligibility and Qualification on Form T-1 supplied to
the Company are true and accurate, subject to the qualifications set forth
therein.  The Trustee shall not be accountable for the use or application by
the Company of Securities or the proceeds thereof.

         SECTION 604.   May Hold Securities.

         The Trustee, any Paying Agent, any Security Registrar or any other
agent of the Company or of the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities and, subject to TIA
Sections 310(b) and 311, may otherwise deal with the Company with the same
rights it would have if it were not Trustee, Paying Agent, Security Registrar
or such other agent.

         SECTION 605.   Money Held in Trust.

         Money held by the Trustee in trust hereunder need not be segregated
from other funds except to the extent required by law.  The Trustee shall be
under no liability for interest on any money received by it hereunder except
as otherwise agreed with the Company.

         SECTION 606.   Compensation and Reimbursement.

         The Company and each Guarantor agree:

         (1)   to pay to the Trustee from time to time reasonable compensation
   for all services rendered by it hereunder (which compensation shall not be
   limited by any provision of law in regard to the compensation of a trustee
   of an express trust);

         (2)   except as otherwise expressly provided herein, to reimburse the
   Trustee upon its request for all reasonable expenses, disbursements and
   advances incurred or made by the Trustee in accordance with any provision
   of this Indenture (including the reasonable compensation and the expenses
   and disbursements of its agents and counsel), except any such expense,
   disbursement or advance as may be attributable to its negligence or bad
   faith; and

         (3)   to indemnify the Trustee, and its officers, directors,
   employees and agents, for, and to hold them harmless against, any loss,
   liability or expense incurred without negligence or bad faith on their
   part, arising out of or in connection with the acceptance or administration
   of this trust, including the costs and expenses of defending themselves
   against any claim or liability in connection with the exercise or
   performance of any of their powers or duties hereunder.

         The obligations of the Company and the Guarantors under this Section
to compensate the Trustee, to pay or reimburse the Trustee for expenses,
disbursements and advances and to indemnify and hold harmless the Trustee
shall constitute additional indebtedness hereunder and shall survive the
satisfaction and discharge of this Indenture.  As security for the performance
of such obligations of the Company and the Guarantors, the Trustee shall have a
claim prior to the Securities upon all property and funds held or collected by
the Trustee as such, except funds held in trust for the payment of principal
of (and premium, if any, on) or interest on particular Securities.

         SECTION 607.   Corporate Trustee Required; Eligibility.

         There shall at all times be a Trustee hereunder which shall be
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a
combined capital and surplus of at least $50,000,000.  If such corporation
publishes reports of condition at least annually, pursuant to law or to the
requirements of federal, state, territorial or District of Columbia
supervising or examining authority, then for the purposes of this Section, the
combined capital and surplus of such corporation shall be deemed to be its
combined capital and surplus as set forth in its most recent report of
condition so published.  If at any time the Trustee shall cease to be eligible
in accordance with the provisions of this Section, it shall resign immediately
in the manner and with the effect hereinafter specified in this Article.

         SECTION 608.   Resignation and Removal; Appointment of Successor.

         (a)   No resignation or removal of the Trustee and no appointment of
a successor Trustee pursuant to this Article  shall become effective until the
acceptance of appointment by the successor Trustee in accordance with the
applicable requirements of Section 609.

         (b)   The Trustee may resign at any time by giving written notice
thereof to the Company.  If the instrument of acceptance by a successor
Trustee required by Section 609 shall not have been delivered to the Trustee
within 30 days after the giving of such notice of resignation, the resigning
Trustee may petition any court of competent jurisdiction for the appointment
of a successor Trustee.

         (c)   The Trustee may be removed at any time by Act of the Holders of
not less than a majority in principal amount of the Outstanding Securities,
delivered to the Trustee and to the Company.

         (d)   If at any time:

         (1)   the Trustee shall fail to comply with the provisions of TIA
   Section 310(b) after written request therefor by the Company or by any
   Holder who has been a bona fide Holder of a Security for at least six
   months, or

         (2)   the Trustee shall cease to be eligible under Section 607 and
   shall fail to resign after written request therefor by the Company or by
   any Holder who has been a bona fide Holder of a Security for at least six
   months, or

         (3)   the Trustee shall become incapable of acting or shall be
   adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
   property shall be appointed or any public officer shall take charge or
   control of the Trustee or of its property or affairs for the purpose of
   rehabilitation, conservation or liquidation,

then, in any such case, (i) the Company, by a Board Resolution, may remove the
Trustee, or (ii) subject to TIA Section 315(e), any Holder who has been a bona
fide Holder of a Security for at least six months may, on behalf of himself
and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee.

         (e)   If the Trustee shall resign, be removed or become incapable of
acting, or if a vacancy shall occur in the office of Trustee for any cause,
the Company, by a Board Resolution, shall promptly appoint a successor
Trustee.  If,  within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities delivered to the Company and the retiring Trustee, the
successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment, become the successor Trustee and supersede the successor Trustee
appointed by the Company.  If no successor Trustee shall have been so
appointed by the Company or the Holders and accepted appointment in the manner
hereinafter provided, any Holder who has been a bona fide Holder of a Security
for at least six months may, on behalf of himself and all others similarly
situated, petition any court of competent jurisdiction for the appointment of
a successor Trustee.

         (f)   The Company shall give notice of each resignation and each
removal of the Trustee and each appointment of a successor Trustee to the
Holders of Securities in the manner provided for in Section 106.  Each notice
shall include the name of the successor Trustee and the address of its
Corporate Trust Office.

         SECTION 609.   Acceptance of Appointment by Successor.

         Every successor Trustee appointed hereunder shall execute,
acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or
removal of the retiring Trustee shall become effective and such successor
Trustee, without any further act, deed or conveyance, shall become vested with
all the rights, powers, trusts and duties of the retiring Trustee; but, on
request of the Company or the successor Trustee, such retiring Trustee shall,
upon payment of its charges, execute and deliver an instrument transferring to
such successor Trustee all the rights, powers and trusts of the retiring
Trustee and shall duly assign, transfer and deliver to such successor Trustee
all property and money held by such retiring Trustee hereunder.  Upon request
of any such successor Trustee, the Company and each Guarantor shall execute
any and all instruments for more fully and certainly vesting in and confirming
to such successor Trustee all such rights, powers and trusts.

         No successor Trustee shall accept its appointment unless at the time
of such acceptance such successor Trustee shall be qualified and eligible
under this Article.

         SECTION 610.   Merger, Conversion, Consolidation or Succession to
Business.

         Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any
merger, conversion or consolidation to which the Trustee shall be a party, or
any corporation succeeding to all or substantially all of the corporate trust
business of the Trustee, shall be the successor of the Trustee hereunder,
provided such corporation shall be otherwise qualified and eligible under this
Article, without the execution or filing of any paper or any further act on
the part of any of the parties hereto.  In case any Securities shall have been
authenticated, but not delivered, by the Trustee then in office, any successor
by merger, conversion or consolidation to such authenticating Trustee may
adopt such authentication and deliver the Securities so authenticated with the
same effect as if such successor Trustee had itself authenticated such
Securities; and in case at that time any of the Securities shall not have been
authenticated, any successor Trustee may authenticate such Securities either
in the name of any predecessor hereunder or in the name of the successor
Trustee; and in all such cases such certificates shall have the full force
which it is anywhere in the Securities or in this Indenture provided that the
certificate of the Trustee shall have; provided, however, that the right to
adopt the certificate of authentication of any predecessor Trustee or to
authenticate Securities in the name of any predecessor Trustee shall apply
only to its successor or successors by merger, conversion or consolidation.


                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

         SECTION 701.   Disclosure of Names and Addresses of Holders.

         Every Holder of Securities, by receiving and holding the same, agrees
with the Company, the Guarantors and the Trustee that none of the Company, the
Guarantors or the Trustee or any agent of any of them shall be held
accountable by reason of the disclosure of any such information as to the
names and addresses of the Holders in accordance with TIA Section 312,
regardless of the source from which such information was derived, and that the
Trustee shall not be held accountable by reason of mailing any material
pursuant to a request made under TIA Section 312(b).

         SECTION 702.   Reports by Trustee.

         Within 60 days after May 15 of each year commencing with the first
May 15 after the first issuance of Securities, the Trustee shall transmit to
the Holders, in the manner and to the extent provided in TIA Section 313(c), a
brief report dated as of such May 15 if required by TIA Section 313(a).

         SECTION 703.   Reports by Company and the Guarantors.

         The Company and each Guarantor shall:

         (1)   file with the Trustee, within 15 days after the Company or such
   Guarantor, as the case may be, is required to file the same with the
   Commission, copies of the annual reports and of the information, documents
   and other reports (or copies of such portions of any of the foregoing as
   the Commission may from time to time by rules and regulations prescribe)
   which the Company or such Guarantor may be required to file with the
   Commission pursuant to Section 13 or Section 15(d) of the Exchange Act; or,
   if the Company or such Guarantor, as the case may be, is not required to
   file information, documents or reports pursuant to either of said Sections,
   then it shall file with the Trustee and the Commission, in accordance with
   rules and regulations prescribed from time to time by the Commission, such
   of the supplementary and periodic information, documents and reports which
   may be required pursuant to Section 13 of the Exchange Act in respect of a
   security listed and registered on a national securities exchange as may be
   prescribed from time to time in such rules and regulations;

         (2)   file with the Trustee and the Commission, in accordance with
   rules and regulations prescribed from time to time by the Commission, such
   additional information, documents and reports with respect to compliance by
   the Company or such Guarantor with the conditions and covenants of this
   Indenture as may be required from time to time by such rules and
   regulations; and

         (3)   transmit by mail to all Holders, in the manner and to the
   extent provided in TIA Section 313(c), within 30 days after the filing
   thereof with the Trustee, such summaries of any information, documents and
   reports required to be filed by the Company or such Guarantor pursuant to
   paragraphs (1) and (2) of this Section as may be required by rules and
   regulations prescribed from time to time by the Commission.


                                  ARTICLE EIGHT

             CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

         SECTION 801.   ADT Limited or Any Restricted Subsidiary May
Consolidate, etc., Only on Certain Terms.

         ADT Limited shall not consolidate or amalgamate with or merge with or
into any other Person or, directly or indirectly, sell, convey, assign,
transfer, lease or otherwise dispose of all or substantially all of its
properties and assets to any Person or group of affiliated Persons, or permit
any of the Restricted Subsidiaries to enter into any such transaction or
transactions if such transaction or transactions, in the aggregate, would
result in the sale, conveyance, assignment, transfer, lease or other
disposition of all or substantially all of the properties and assets of the
Company, ADT Limited and the other Restricted Subsidiaries on a consolidated
basis, to any Person or group of affiliated Persons, unless (and, in the case
of certain mergers, consolidations or amalgamations of ADT Limited with or
into any other Person, subject to Section 802 hereof):

         (1)   either (A) the Company, ADT Limited or such other Restricted
   Subsidiary shall be the continuing corporation or (B) such Person (if other
   than the Company, ADT Limited or such other Restricted Subsidiary) formed
   by such consolidation or amalgamation or into which the Company, ADT
   Limited or such other Restricted Subsidiary is amalgamated or merged or the
   Person which acquires by sale, conveyance, assignment, transfer, lease or
   other disposition all or substantially all of the properties and assets of
   the Company, ADT Limited and the other Restricted Subsidiaries (the
   "Surviving Entity") shall be a corporation duly organized and validly
   existing under the laws of the United States of America, any state thereof
   or the District of Columbia except that in the case of ADT Limited or any
   Restricted Subsidiary (other than the Company or any Restricted Subsidiary
   of the Company), the Surviving Entity may be a corporation duly organized
   and validly existing under the laws of Bermuda, Canada, the United Kingdom
   or any political subdivision thereof and shall, in either case, expressly
   assume, by supplemental indenture to this Indenture, executed and delivered
   by the Trustee, in form satisfactory to the Trustee, all the obligations of
   the Company, ADT Limited or such other Restricted Subsidiary under the
   Securities and this Indenture and this Indenture shall remain in full force
   and effect;

         (2)   immediately before and immediately after giving effect to such
   transaction no Default or Event of Default shall have occurred and be
   continuing (and treating any Indebtedness that becomes an obligation of the
   Company, ADT Limited or any other Restricted Subsidiary in connection with
   or as a result of such transaction as having been incurred at the time of
   such transaction);

         (3)   immediately after giving effect to such transaction, the
   Consolidated Net Worth of ADT Limited, if the Company, ADT Limited or any
   other Restricted Subsidiary is the continuing corporation, or the Surviving
   Entity is at least equal to the Consolidated Net Worth of ADT Limited
   immediately before such transaction;


         (4)   each Guarantor, unless it is the other party to the
   transactions described above, shall have by supplemental indenture
   confirmed that its Guarantee shall apply to such Person's obligations under
   the Securities; and

         (5)   the Company and ADT Limited shall have delivered, or caused to
   be delivered, to the Trustee an Officers' Certificate and an Opinion of
   Counsel, each stating that this Section 801 has been complied with and that
   all conditions precedent herein provided for relating to such transaction
   have been satisfied.

Notwithstanding anything contained in this Section 801, the Company and any
Surviving Entity of the Company shall at all times be a corporation duly
organized and validly existing under the laws of the United States of America,
any state thereof or the District of Columbia.

         SECTION 802.   ADT Limited May Amalgamate, Redomesticate, etc., Only
on Certain Terms.

         ADT Limited may (a) amalgamate with or merge with or into a
newly-formed corporation having no assets or liabilities, which amalgamation
or merger shall be solely for the purpose of reincorporating ADT Limited under
the laws of Canada, the United Kingdom or other political subdivision thereof
or the United States of America, any state thereof or the District of Columbia
or (b) continue, redomesticate or otherwise become subject to the laws of a
jurisdiction other than Bermuda, to the same extent as if it had been
incorporated in such jurisdiction, provided that in the case of clauses (a)
and (b) above:

         (1)   the Surviving Entity shall be a corporation duly organized and
   validly existing under the laws of Canada, the United Kingdom or political
   subdivision thereof or the United States of America, any state thereof or
   the District of Columbia and shall, in either case, expressly assume, by
   supplemental indenture to this Indenture, executed and delivered by the
   Trustee, in form satisfactory to the Trustee, all the obligations of ADT
   Limited under the Securities and this Indenture and this Indenture shall
   remain in full force and effect;

         (2)   immediately before and immediately after giving effect to such
   transaction, no Default or Event of Default shall have occurred and be
   continuing (and treating any Indebtedness that becomes an obligation of the
   Company, ADT Limited or any other Restricted Subsidiary in connection with
   or as a result of such transaction as having been incurred at the time of
   such transaction);

         (3)   immediately after giving effect to such transaction, the
   Consolidated Net Worth of the Surviving Entity is at least equal to the
   Consolidated Net Worth of ADT Limited immediately before such transaction
   less customary and reasonable transaction costs;

         (4)   each Guarantor, unless it is the other party to the
   transactions described above, shall have by supplemental indenture
   confirmed that its Guarantee shall apply to such Person's obligations under
   the Securities; and

         (5)   the Surviving Entity shall have delivered, or caused to be
   delivered, to the Trustee an Officers' Certificate and an Opinion of
   Counsel, each stating that this Section 802 has been complied with and that
   all conditions precedent herein provided for relating to such transaction
   have been satisfied.

         SECTION 803.   Successor Substituted.

         Upon any consolidation or amalgamation of ADT Limited or
consolidation of the Company or any Guarantor with or merger of the Company or
any Guarantor with or into any other corporation, or any continuance or
redomestication of ADT Limited in a jurisdiction other than Bermuda, or upon
any conveyance, transfer or lease of all or substantially all of the
properties and assets of the Company, ADT Limited and the other Restricted
Subsidiaries to any Person in accordance with Section 801 or 802, the
successor Person formed by such consolidation, amalgamation, continuance or
redomestication or into which the Company or such Guarantor is merged or to
which such conveyance, transfer or lease is made shall succeed to, and be
substituted for, and may exercise every right and power of, the Company or
such Guarantor under this Indenture, the Securities and the Guarantees, as the
case may be, with the same effect as if such successor Person had been named
as the Company or such Guarantor, as the case may be, herein, in the
Securities or in the Guarantees, as the case may be, and in the event of any
such conveyance or transfer, the Company or such Guarantor (which terms shall
for this purpose mean the Person named as the "Company" in the first paragraph
of this Indenture, any Guarantor on the date hereof or any successor Person
which shall theretofore become such in the manner described in Section 801 or
802), except in the case of a lease, shall be discharged of all obligations
and covenants under this Indenture, the Securities and the Guarantees, as the
case may be, and may be dissolved and liquidated.

                                 ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

         SECTION 901.   Supplemental Indentures Without Consent of Holders.

         Without the consent of any Holders, the Company and the Guarantors,
when each is authorized by a Board Resolution adopted by their respective
boards of directors or any duly authorized committee thereof, and the Trustee,
at any time and from time to time, may enter into one or more indentures
supplemental hereto, or agreements or other instruments with respect to the
Guarantees, in form satisfactory to the Trustee, for any of the following
purposes:

         (1)   to evidence the succession of another Person to the Company or
   any Guarantor and the assumption by any such successor of the covenants of
   the Company or any Guarantor contained herein, in the Securities or in the
   Guarantees; or

         (2)   to add to the covenants of the Company or any Guarantor for the
   benefit of the Holders or to surrender any right or power herein conferred
   upon the Company or any Guarantor; or

         (3)   to add any additional Events of Default; or

         (4)   to evidence and provide for the acceptance of appointment
   hereunder by a successor Trustee pursuant to the requirements of Section
   609; or

         (5)   to cure any ambiguity, to correct or supplement any provision
   herein which may be inconsistent with any other provision herein, or to
   make any other provisions with respect to matters or questions arising
   under this Indenture; provided that such action shall not adversely affect
   the interests of the Holders in any material respect; or

         (6)   to add a guarantor of the Guaranteed Obligations; or

         (7)   to secure the Securities pursuant to any relevant provision
   under the Indenture.

         SECTION 902.   Supplemental Indentures with Consent of Holders.

         With the consent of the Holders of not less than a majority in
principal amount of the Outstanding Securities, by Act of said Holders
delivered to the Company and the Trustee, the Company and the Guarantors, when
each is authorized by a Board Resolution, and the Trustee may enter into an
indenture or indentures supplemental hereto for the purpose of adding any
provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of modifying in any manner the rights of the Holders
under this Indenture; provided, however, that no such supplemental indenture
shall, without the consent of the Holder of each Outstanding Security affected
thereby:

         (1)   change the Stated Maturity of the principal of, or any
   installment of interest on, any Security, or reduce the principal amount
   thereof or the rate of interest thereon or any premium payable upon the
   redemption thereof, or change the coin or currency in which any Security or
   any premium or the interest thereon is payable, or impair the right to
   institute suit for the enforcement of any such payment after the Stated
   Maturity thereof (or, in the case of redemption, on or after the Redemption
   Date), or

         (2)   reduce the percentage in principal amount of the Outstanding
   Securities, the consent of whose Holders is required for any such
   supplemental indenture, or the consent of whose Holders is required for any
   waiver of compliance with certain provisions of this Indenture or certain
   defaults hereunder and their consequences provided for in this Indenture, or

         (3)   modify any of the provisions of this Section or Sections 513
   and 1021, except to increase any such percentage or to provide that certain
   other provisions of this Indenture cannot be modified or waived without the
   consent of the Holder of each Outstanding Security affected thereby, or

         (4)   modify any of the provisions of this Indenture relating to a
   Change in Control in a manner adverse to the Holders of the Outstanding
   Securities, or

         (5)   modify any of the provisions of this Indenture relating to the
   subordination of the Securities in a manner adverse to the Holders thereof.

         It shall not be necessary for any Act of Holders under this Section
to approve the particular form of any proposed supplemental indenture, but it
shall be sufficient if such Act shall approve the substance thereof.

         SECTION 903.   Execution of Supplemental Indentures.

         In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby
of the trusts created by this Indenture, the Trustee shall be entitled to
receive, and shall be fully protected in relying upon, an Opinion of Counsel
stating that the execution of such supplemental indenture is authorized or
permitted by this Indenture.  The Trustee may, but shall not be obligated to,
enter into any such supplemental indenture which affects the Trustee's own
rights, duties or immunities under this Indenture or otherwise.

         SECTION 904.   Effect of Supplemental Indentures.

         Upon the execution of any supplemental indenture under this Article,
this Indenture shall be modified in accordance therewith, and such
supplemental indenture shall form a part of this Indenture for all purposes;
and every Holder of Securities theretofore or thereafter authenticated and
delivered hereunder shall be bound thereby.

         SECTION 905.   Conformity with Trust Indenture Act.

         Every supplemental indenture executed pursuant to the Article shall
conform to the requirements of the Trust Indenture Act as then in effect.

         SECTION 906.   Reference in Securities to Supplemental Indentures.

         Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture.  If the Company shall so
determine, new Securities so modified as to conform, in the opinion of the
Trustee and the Company, to any such supplemental indenture may be prepared
and executed by the Company and authenticated and delivered by the Trustee in
exchange for Outstanding Securities.

         SECTION 907.   Notice of Supplemental Indentures.

         Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of Section 902, the Company
shall give notice thereof to the Holders of each Outstanding Security
affected, in the manner provided for in Section 106, setting forth in general
terms the substance of such supplemental indenture.

         SECTION 908.   Effect on Senior Indebtedness.

         No supplemental indenture shall adversely affect the rights of the
holders of Designated Guarantor Senior Indebtedness under Article Thirteen or
Designated Senior Indebtedness under Article Fourteen without the consent of
the representative of such holders.

                                  ARTICLE TEN

                                   COVENANTS

         SECTION 1001.  Payment of Principal, Premium, if any, and Interest.

         The Company covenants and agrees for the benefit of the Holders that
it will duly and punctually pay the principal of (and premium, if any, on) and
interest on the Securities in accordance with the terms of the Securities and
this Indenture.

         SECTION 1002.  Maintenance of Office or Agency.

         The Company will maintain in [The City of Atlanta, an office or
agency where Securities may be presented or surrendered for payment], and will
maintain in The City of New York an office or agency where Securities may be
surrendered for registration of transfer or exchange and where notices and
demands to or upon the Company in respect of the Securities and this Indenture
may be served.  The Corporate Trust Office of the Trustee shall be such office
or agency of the Company, unless the Company shall designate and maintain some
other office or agency for one or more of such purposes.  The Company will
give prompt written notice to the Trustee of any change in the location of any
such office or agency.  If at any time the Company shall fail to maintain any
such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be
made or served at the Corporate Trust Office of the Trustee, and the Company
hereby appoints the Trustee as its agent to receive all such presentations,
surrenders, notices and demands.

         The Company may also from time to time designate one or more other
offices or agencies (in or outside of The City of Atlanta or The City of New
York, as the case may be) where the Securities may be presented or surrendered
for any or all such purposes and may from time to time rescind any such
designation; provided, however, that no such designation or rescission shall
in any manner relieve the Company of its obligation to maintain an office or
agency in The City of Atlanta or The City of New York, as the case may be, for
such purposes.  The Company will give prompt written notice to the Trustee of
any such designation or rescission and any change in the location of any such
other office or agency.

         SECTION 1003.  Money for Security Payments to Be Held in Trust.

         If the Company shall at any time act as its own Paying Agent, it
will, on or before each due date of the principal of (and premium, if any, on)
or interest on any of the Securities, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay the principal
(and premium, if any) or interest so becoming due until such sums shall be
paid to such Persons or otherwise disposed of as herein provided and will
promptly notify the Trustee of its action or failure so to act.

         Whenever the Company shall have one or more Paying Agents for the
Securities, it will, on or before each due date of the principal of (and
premium, if any, on), or interest on, any Securities, deposit with a Paying
Agent a sum sufficient to pay the principal (and premium, if any) or interest
so becoming due, such sum to be held in trust for the benefit of the Persons
entitled to such principal, premium or interest, and (unless such Paying Agent
is the Trustee) the Company will promptly notify the Trustee of such action or
any failure so to act.

         The Company will cause each Paying Agent (other than the Trustee) to
execute and deliver to the Trustee an instrument in which such Paying Agent
shall agree with the Trustee, subject to the provisions of this Section, that
such Paying Agent will:

         (1)   hold all sums held by it for the payment of the principal of
   (and premium, if any, on) or interest on Securities in trust for the
   benefit of the Persons entitled thereto until such sums shall be paid to
   such Persons or otherwise disposed of as herein provided;

         (2)   give the Trustee notice of any default by the Company or any
   Guarantor in the making of any payment of principal (and premium, if any)
   or interest; and

         (3)   at any time during the continuance of any such default, upon
   the written request of the Trustee, forthwith pay to the Trustee all sums
   so held in trust by such Paying Agent.

         The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held
in trust by the Company or such Paying Agent, such sums to be held by the
Trustee upon the same trusts as those upon which such sums were held by the
Company or such Paying Agent; and, upon such payment by any Paying Agent to the
Trustee, such Paying Agent shall be released from all further liability with
respect to such sums.

         Any money deposited with the Trustee or any Paying Agent, or then
held by the Company, in trust for the payment of the principal of (and
premium, if any, on) or interest on any Security and remaining unclaimed for
two years after such principal (and premium, if any) or interest has become
due and payable shall be paid to the Company on Company Request,  or (if then
held by the Company) shall be discharged from such trust; and the Holder of
such Security shall thereafter, as an unsecured general creditor, look only to
the Company for payment thereof, and all liability of the Trustee or such
Paying Agent with respect to such trust money, and all liability of the
Company as trustee thereof, shall thereupon cease; provided, however, that the
Trustee or such Paying Agent, before being required to make any such
repayment, may at the expense of the Company cause to be published once, in a
newspaper published in the English language, customarily published on each
Business Day and of general circulation in the Borough of Manhattan, The City
of New York, notice that such money remains unclaimed and that, after a date
specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid
to the Company.

         SECTION 1004.  Corporate Existence.

         Subject to Article Eight, the Company and ADT Limited will do or
cause to be done all things necessary to preserve and keep in full force and
effect the corporate existence, rights (charter and statutory) and franchises
of the Company, ADT Limited and each other Restricted Subsidiary; provided,
however, that the Company and ADT Limited shall not be required to preserve
any such right or franchise if the Board of Directors shall determine that the
preservation thereof is no longer desirable in the conduct of the business of
the Company, ADT Limited and the other Restricted Subsidiaries as a whole and
that the loss thereof is not disadvantageous in any material respect to the
Holders.

         SECTION 1005.  Payment of Taxes and Other Claims.

         The Company and ADT Limited will pay or discharge or cause to be paid
or discharged, before the same shall become delinquent, (a) all taxes,
assessments and governmental charges levied or imposed upon the Company, ADT
Limited or any other Subsidiary or upon the income, profits or property of the
Company, ADT Limited or any other Subsidiary and (b) all lawful claims for
labor, materials and supplies, which, if unpaid, might by law become a lien
upon the property of the Company, ADT Limited or any other Restricted
Subsidiary; provided, however, that the Company and ADT Limited shall not be
required to pay or discharge or cause to be paid or discharged any such tax,
assessment, charge or claim whose amount, applicability or validity is being
contested in good faith by appropriate proceedings.

         SECTION 1006.  Maintenance of Properties.

         The Company and ADT Limited will cause all properties owned by the
Company, ADT Limited or any other Restricted Subsidiary or used or held for
use in the conduct of the business of the Company, ADT Limited or any other
Restricted Subsidiary to be maintained and kept in good condition, repair and
working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and
improvements thereof, all as in the judgment of the Company and ADT Limited
may be necessary so that the business carried on in connection therewith may
be properly and advantageously conducted at all times; provided, however, that
nothing in this Section shall prevent the Company and ADT Limited from
discontinuing the maintenance of any of such properties if such discontinuance
is, in the judgment of the Company and ADT Limited, desirable in the conduct
of the business of the Company, ADT Limited or any other Restricted Subsidiary
and not disadvantageous in any material respect to the Holders.

         SECTION 1007.  Insurance.

         The Company and ADT Limited will at all times keep all of the
properties of the Company, ADT Limited and the other Restricted Subsidiaries
which are of an insurable nature insured with insurers, believed by the
Company and ADT Limited to be responsible, against loss or damage to the
extent that property of similar character is usually so insured by corporations
similarly situated and owning like properties.

         SECTION 1008.  Statement by Officers As to Default.

         (a)   Each of ADT Limited and the Company will deliver to the
Trustee, within 120 days after the end of each fiscal year, a brief
certificate from its principal executive officer, principal financial officer
or principal accounting officer as to his or her knowledge of compliance by
the Company, ADT Limited and the other Subsidiaries with all conditions and
covenants applicable to the Company, ADT Limited and the other Subsidiaries
under this Indenture.  For purposes of this Section 1008(a), such compliance
shall be determined without regard to any period of grace or requirement of
notice under this Indenture.

         (b)   When any Default has occurred and is continuing under this
Indenture, or if the trustee for or the holder of  any other evidence of
Indebtedness of the Company, ADT Limited or any other Restricted Subsidiary
gives any notice or takes any other action with respect to a claimed default
(other than with respect to Indebtedness in the principal amount of less than
$15,000,000), the Company or ADT Limited shall deliver to the Trustee by
registered or certified mail or by telegram, telex or facsimile transmission
an Officers' Certificate specifying such event, notice or other action within
five Business Days of its occurrence.

         SECTION 1009.  Provision of Financial Statements.

         Whether or not ADT Limited is subject to Section 13(a) or 15(d) of
the Exchange Act, ADT Limited will, to the extent permitted under the Exchange
Act, file with the Commission the annual reports, quarterly reports and other
documents that ADT Limited would have been required to file with the
Commission pursuant to such Sections 13(a) or 15(d) if ADT Limited were so
subject, such documents to be filed with the Commission on or prior to the
respective dates (the "Required Filing Dates") by which ADT Limited would have
been required so to file such documents if ADT Limited were so subject.  The
Company will also in any event (x) within 15 days of each Required Filing Date
(i) transmit by mail to all Holders, as their names and addresses appear in
the Security Register, without cost to such Holders and (ii) file with the
Trustee copies of the annual reports, quarterly reports and other documents
that ADT Limited would have been required to file with the Commission pursuant
to Section 13(a) or 15(d) of the Exchange Act if ADT Limited were subject to
such Sections and (y) if filing such documents by ADT Limited with the
Commission is not permitted under the Exchange Act, promptly upon written
request, authorize the Trustee to provide a copy of such documents to a
prospective holder of the Securities at the Company's cost.

         SECTION 1010.  Purchase of Securities upon Change in Control.

         (a)   Upon the occurrence of a Change in Control, each Holder of
Securities shall have the right to require the Company to repurchase such
Holder's Securities in whole or in part in integral multiples of $1,000, at a
purchase price (the "Change in Control Purchase Price") in cash in an amount
equal to 101% of the principal amount of such Securities plus accrued and
unpaid interest, if any, to the date of purchase, in accordance with the
procedures set forth in this Section 1010 (a "Change in Control Offer");
provided, however, that notwithstanding the occurrence of a Change in Control,
the Company shall not be obligated to make a Change in Control Offer with
respect to the Securities in the event that it has exercised its right to
redeem all of the Securities in accordance with Article Eleven hereof.

         (b)   Within 30 days following any Change in Control, the Company
shall send by first-class mail, postage prepaid, to the Trustee and to each
Holder of the Securities, at his address appearing in the Security Register, a
notice stating:

         (1)   that a Change in Control has occurred and that such Holder has
   the right to require the Company to repurchase such Holder's Securities at
   the Change in Control Purchase Price;

         (2)   the circumstances and relevant facts regarding such Change in
   Control (including but not limited to information with respect to pro forma
   historical income, cash flow and capitalization after giving effect to such
   Change in Control);

         (3)   a purchase date (the "Purchase Date") which shall be no earlier
   than 45 days nor later than 60 days from the date such notice is mailed or
   such later date as may be necessary for the Company to comply with the
   requirements under the Exchange Act;

         (4)   that any Security not tendered will continue to accrue
   interest; and

         (5)   the instructions a Holder must follow in order to have its
   Securities repurchased in accordance with paragraph (d) of this Section.

         (c)   Holders electing to have Securities purchased will be required
to surrender such Securities to the Company at the address specified in the
notice at least five Business Days prior to the Purchase Date.  Holders will
be entitled to withdraw their election if the Company receives, not later than
five Business Days prior to the Purchase Date, a telegram, telex, facsimile
transmission or letter setting forth the name of the Holder, the principal
amount of the Securities delivered for purchase by the Holder as to which his
election is to be withdrawn and a statement that such Holder is withdrawing
his election to have such Securities purchased.  Holders whose Securities are
purchased only in part will be issued new Securities equal in principal amount
to the unpurchased portion of the Securities surrendered.

         (d)   The Company will comply with the applicable tender offer rules,
including Rule 14e-1 under the Exchange Act, and any other applicable
securities laws or regulations in connection with a Change in Control Offer.

         [SECTIONS 1011-1020 intentionally omitted.]

         SECTION 1021.  Waiver of Certain Covenants.

         The Company and each Guarantor may omit in any particular instance to
comply with any term, provision or condition set forth in Section 804,
Sections 1007 through 1009, inclusive, or Sections 1011 through 1020, if
before or after the time for such compliance the Holders of at least a
majority in principal amount of the Outstanding Securities, by Act of such
Holders, waive such compliance in such instance with such term, provision or
condition, but no such waiver shall extend to or affect such term, provision
or condition except to the extent so expressly waived, and, until such waiver
shall become effective, the obligations of the Company and each Guarantor and
the duties of the Trustee in respect of any such term, provision or condition
shall remain in full force and effect.

                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

         SECTION 1101.  Right of Redemption.

         The Securities may be redeemed, at the election of the Company, as a
whole or from time to time in part, at any  time after August 1, 1998, subject
to the conditions and at the Redemption Prices specified in the form of
Security, together with accrued interest to the Redemption Date.

         SECTION 1102.  Applicability of Article.

         Redemption of Securities at the election of the Company or otherwise,
as permitted or required by any provision of this Indenture, shall be made in
accordance with such provision and this Article.

         SECTION 1103.  Election to Redeem; Notice to Trustee.

         The election of the Company to redeem any Securities pursuant to
Section 1101 shall be evidenced by a Board Resolution.  In case of any
redemption at the election of the Company, the Company shall, at least 60 days
prior to the Redemption Date fixed by the Company (unless a shorter notice
shall be satisfactory to the Trustee), notify the Trustee of such Redemption
Date and of the principal amount of Securities to be redeemed and shall
deliver to the Trustee such documentation and records as shall enable the
Trustee to select the Securities to be redeemed pursuant to Section 1104.

         SECTION 1104.  Selection by Trustee of Securities to Be Redeemed.

         If less than all the Securities are to be redeemed, the particular
Securities to be redeemed shall be selected not more than 60 days prior to the
Redemption Date by the Trustee, from the Outstanding Securities not previously
called for redemption, by such method as the Trustee shall deem fair and
appropriate and which may provide for the selection for redemption of portions
of the principal of Securities; provided, however, that no such partial
redemption shall reduce the portion of the principal amount of a Security not
redeemed to less than $1,000.

         The Trustee shall promptly notify the Company in writing of the
Securities selected for redemption and, in the case of any Securities selected
for partial redemption, the principal amount thereof to be redeemed.

         For all purposes of this Indenture, unless the context otherwise
requires, all provisions relating to redemption of Securities shall relate, in
the case of any Security redeemed or to be redeemed only in part, to the
portion of the principal amount of such Security which has been or is to be
redeemed.

         SECTION 1105.  Notice of Redemption.

         Notice of redemption shall be given in the manner provided for in
Section 106 not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed.

         All notices of redemption shall state:

         (1)   the Redemption Date,

         (2)   the Redemption Price,

         (3)   if less than all Outstanding Securities are to be redeemed, the
   identification (and, in the case of a partial redemption, the principal
   amounts) of the particular Securities to be redeemed,

         (4)   that on the Redemption Date the Redemption Price (together with
   accrued interest, if any, to the Redemption Date payable as provided in
   Section 1107) will become due and payable upon each such Security, or the
   portion thereof, to be redeemed, and that interest thereon will cease to
   accrue on and after said date, and

         (5)   the place or places where such Securities are to be surrendered
   for payment of the Redemption Price.

         Notice of redemption of Securities to be redeemed at the election of
the Company shall be given by the Company or, at the Company's request, by the
Trustee in the name and at the expense of the Company.

         SECTION 1106.  Deposit of Redemption Price.

         Prior to any Redemption Date, the Company shall deposit with the
Trustee or with a Paying Agent (or, if the Company is acting as its own Paying
Agent, segregate and hold in trust as provided in Section 1003) an amount of
money sufficient to pay the Redemption Price of, and accrued interest on, all
the Securities which are to be redeemed on that date.

         SECTION 1107.  Securities Payable on Redemption Date.

         Notice of redemption having been given as aforesaid, the Securities
so to be redeemed shall, on the Redemption Date, become due and payable at the
Redemption Price therein specified (together with accrued interest, if any, to
the Redemption Date), and from and after such date (unless the  Company shall
default in the payment of the Redemption Price and accrued interest) such
Securities shall cease to bear interest.  Upon surrender of any such Security
for redemption in accordance with said notice, such Security shall be paid by
the Company at the Redemption Price, together with accrued interest, if any,
to the Redemption Date; provided, however, that installments of interest whose
Stated Maturity is on or prior to the Redemption Date shall be payable to the
Holders of such Securities, or one or more Predecessor Securities, registered
as such at the close of business on the relevant Record Dates according to
their terms and the provisions of Section 307.

         If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate borne by the
Securities.

         SECTION 1108.  Securities Redeemed in Part.

         Any Security which is to be redeemed only in part shall be
surrendered at the office or agency of the Company maintained for such purpose
pursuant to Section 1002 (with, if the Company or the Trustee so requires, due
endorsement by, or a written instrument of transfer in form satisfactory to
the Company and the Trustee duly executed by, the Holder thereof or such
Holder's attorney duly authorized in writing), and the Company shall execute,
and the Trustee shall authenticate and deliver to the Holder of such Security
without service charge, a new Security or Securities, of any authorized
denomination as requested by such Holder, in aggregate principal amount equal
to and in exchange for the unredeemed portion of the principal of the Security
so surrendered.

                                ARTICLE TWELVE

                      DEFEASANCE AND COVENANT DEFEASANCE

         SECTION 1201.  Company's Option to Effect Defeasance or Covenant
Defeasance.

         The Company may, at its option by Board Resolution, at any time, with
respect to the Securities, elect to have either Section 1202 or Section 1203
be applied to all Outstanding Securities upon compliance with the conditions
set forth below in this Article Twelve.

         SECTION 1202.  Defeasance and Discharge.

         Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1202, the Company shall be deemed to have been
discharged from its obligations with respect to all Outstanding Securities on
the date the conditions set forth in Section 1204 are satisfied (hereinafter,
"defeasance").  For this purpose, such defeasance means that the Company shall
be deemed to have paid and discharged the entire indebtedness represented by
the Outstanding Securities, which shall thereafter be deemed to be
"Outstanding" only for the purposes of Section 1205 and the other Sections of
this Indenture referred to in (A) and (B) below, and to have satisfied all its
other obligations under such Securities and this Indenture insofar as such
Securities are concerned (and the Trustee, at the expense of the Company, shall
execute proper instruments acknowledging the same), except for the following
which shall survive until otherwise terminated or discharged hereunder:  (A)
the rights of Holders of Outstanding Securities to receive, solely from the
trust fund described in Section 1204 and as more fully set forth in such
Section, payments in respect of the principal of (and premium, if any, on) and
interest on such Securities when such payments are due, (B) the Company's
obligations with respect to such Securities under Sections 304, 305, 306, 1002
and 1003, (C) the rights, powers, trusts, duties and immunities of the Trustee
hereunder and (D) this Article Twelve.  Subject to compliance with this
Article Twelve, the Company may exercise its option under this Section 1202
notwithstanding the prior exercise of its option under Section 1203 with
respect to the Securities.

         SECTION 1203.  Covenant Defeasance.

         Upon the Company's exercise under Section 1201 of the option
applicable to this Section 1203, the Company and the Guarantors shall be
released from their obligations under any covenant contained in Section
801(3), Section 802(3) and in Sections 1007 through 1010 with respect to the
Outstanding Securities on and after the date the conditions set forth below are
satisfied (hereinafter, "covenant defeasance"), and the Securities shall
thereafter be deemed not to be "Outstanding" for the purposes of any
direction, waiver, consent or declaration or Act of Holders (and the
consequences of any thereof) in connection with such covenants, but shall
continue to be deemed "Outstanding" for all other purposes hereunder.  For
this purpose, such covenant defeasance means that, with respect to the
Outstanding Securities, the Company and the Guarantors may omit to comply with
and shall have no liability in respect of  any term, condition or limitation
set forth in any such covenant, whether directly or indirectly, by reason of
any reference elsewhere herein to any such covenant or by reason of any
reference in any such covenant to any other provision herein or in any other
document and such omission to comply shall not constitute a Default or an
Event of Default under Section 501(3), but, except as specified above, the
remainder of this Indenture and such Securities shall be unaffected thereby.

         SECTION 1204.  Conditions to Defeasance or Covenant Defeasance.

         The following shall be the conditions to application of either
Section 1202 or Section 1203 to the Outstanding Securities:

         (1)   The Company shall irrevocably have deposited or caused to be
   deposited with the Trustee (or another trustee satisfying the requirements
   of Section 607 who shall agree to comply with the provisions of this
   Article Twelve applicable to it) as trust funds in trust for the purpose of
   making the following payments, specifically pledged as security for, and
   dedicated solely to, the benefit of the Holders of such Securities, (A)
   cash in U.S. dollars in an amount, or (B) U.S. Government Obligations which
   through the scheduled payment of principal and interest in respect thereof
   in accordance with their terms will provide, not later than one day before
   the due date of any payment, money in an amount, or (C) a combination
   thereof, sufficient, in the opinion of a nationally recognized firm of
   independent public accountants expressed in a written certification thereof
   delivered to the Trustee, to pay and discharge, and which shall be applied
   by the Trustee (or other qualifying trustee) to pay and discharge, (i) the
   principal of (and premium, if any, on) and interest on the Outstanding
   Securities on the Stated Maturity (or Redemption Date, if applicable) of
   such principal (and premium, if any) or installment of interest and (ii)
   any mandatory redemption or analogous payments applicable to the
   Outstanding Securities on the day on which such payments are due and
   payable in accordance with the terms of this Indenture and of such
   Securities; provided that the Trustee shall have been irrevocably
   instructed to apply such money or the proceeds of such U.S. Government
   Obligations to said payments with respect to the Securities; and provided
   further that upon the satisfaction of the conditions set forth in this
   Section 1204, the cash or U.S. Government Obligations deposited shall not
   be subject to the rights of the holders of Guarantor Senior Indebtedness
   pursuant to the provisions of Article Thirteen or holders of Senior
   Indebtedness pursuant to the provisions of Article Fourteen.  Before such a
   deposit, the Company may give to the Trustee, in accordance with Section
   1103 hereof, a notice of its election to redeem all of the Outstanding
   Securities at a future date in accordance with Article Eleven hereof, which
   notice shall be irrevocable.  Such irrevocable redemption notice, if given,
   shall be given effect in applying the foregoing.

         (2)   No Default or Event of Default with respect to the Securities
   shall have occurred and be continuing on the date of such deposit or,
   insofar as paragraphs (7) and (8) of Section 501 hereof are concerned, at
   any time during the period ending on the 91st or 367th day, as the case may
   be, after the date of such deposit (it being understood that this condition
   shall not be deemed satisfied until the expiration of such period).

         (3)   No event or condition shall exist that pursuant to the
   provisions of Section 1402 or 1403 would prevent the Company from making
   payments of the principal of (and premium, if any, on) or interest on the
   Securities on the date of such deposit or at any time during the period
   ending on the 91st or 367th day, as the case may be, after the date of such
   deposit (it being understood that this condition shall not be deemed
   satisfied until the expiration of such period).

         (4)   Such defeasance or covenant defeasance shall not result in a
   breach or violation of, or constitute a default under, this Indenture or
   any other material agreement or instrument to which the Company or any
   Guarantor is a party or by which the Company or any Guarantor is bound.

         (5)   In the case of an election under Section 1202, the Company
   shall have delivered to the Trustee an Opinion of Counsel stating that (x)
   the Company has received from, or there has been published by, the Internal
   Revenue Service a ruling, or (y) since the date hereof, there has been a
   change in the applicable federal income tax law, in either case to the
   effect that, and based thereon such opinion shall confirm that, the Holders
   of the Outstanding Securities will not recognize income, gain or loss for
   federal income tax purposes as a result of such defeasance and will be
   subject to federal income tax on the same amounts, in the same manner and
   at the same times as would have been the case if such defeasance had not
   occurred.

         (6)   In the case of an election under Section 1203, the Company
   shall have delivered to the Trustee an Opinion of Counsel to the effect
   that the Holders of the Outstanding Securities will not recognize income,
   gain or loss for federal income tax purposes as a result of such covenant
   defeasance and will be subject to federal income tax on the same amounts,
   in the same manner and at the same times as would have been the case if
   such covenant defeasance had not occurred.

         (7)   The Company shall have delivered to the Trustee an Officers'
   Certificate and an Opinion of Counsel, each stating that all conditions
   precedent provided for relating to either the defeasance under Section 1202
   or the covenant defeasance under Section 1203 (as the case may be) have
   been complied with.

         (8)   The Company shall have delivered to the Trustee an Opinion of
   Counsel stating that after the 91st day following the deposit, the trust
   funds will not be subject to the effect of any applicable bankruptcy,
   insolvency, reorganization or similar laws affecting creditors' rights
   generally; provided, however, that if counsel determines that it cannot
   deliver such opinion as a matter of law, the Company shall have delivered
   to the Trustee an Opinion of Counsel to the effect that after the 367th day
   following the deposit, the trust funds will not be subject to the effect of
   any applicable bankruptcy, insolvency, reorganization or similar laws
   affecting creditors' rights generally.

         (9)   The Company shall have delivered to the Trustee an Officers'
   Certificate stating that the deposit was not made by the Company with the
   intent of preferring the holders of the Securities or the Guarantees
   endorsed thereon over the other creditors of the Company or any Guarantor
   or with the intent of hindering, delaying or defrauding creditors of the
   Company or any Guarantor.

Reference in paragraphs (2) and (3) above to the number of days shall mean the
91st day if the Opinion of Counsel referred to in paragraph (8) above refers
to the 91st day and shall mean the 367th day if the Opinion of Counsel
referred to in paragraph (8) above refers to the 367th day.

         SECTION 1205.  Deposited Money and U.S. Government Obligations to Be
Held in Trust; Other Miscellaneous Provisions.

         Subject to the provisions of the last paragraph of Section 1003, all
money and U.S. Government Obligations  (including the proceeds thereof)
deposited with the Trustee (or other qualifying trustee--collectively for
purposes of this Section 1205, the "Trustee") pursuant to Section 1204 in
respect of the Outstanding Securities shall be held in trust and applied by the
Trustee, in accordance with the provisions of such Securities and this
Indenture, to the payment, either directly or through any Paying Agent
(including the Company acting as its own Paying Agent) as the Trustee may
determine, to the Holders of such Securities of all sums due and to become due
thereon in respect of principal (and premium, if any) and interest, but such
money need not be segregated from other funds except to the extent required by
law.

         The Company shall pay and indemnify the Trustee against any tax, fee
or other charge imposed on or assessed against the U.S. Governmental
Obligations deposited pursuant to Section 1204 or the principal and interest
received in respect thereof other than any such tax, fee or other charge which
by law is for the account of the Holders of the Outstanding Securities.

         Anything in this Article Twelve to the contrary notwithstanding, the
Trustee shall deliver or pay to the Company from time to time upon Company
Request any money or U.S. Government Obligations held by it as provided in
Section 1204 which, in the opinion of a nationally recognized firm of
independent public accountants expressed in a written certification thereof
delivered to the Trustee, are in excess of the amount thereof which would then
be required to be deposited to effect an equivalent defeasance or covenant
defeasance, as applicable, in accordance with this Article.

         SECTION 1206.  Reinstatement.

         If the Trustee or any Paying Agent is unable to apply any money in
accordance with Section 1205 by reason of any order or judgment of any court
or governmental authority enjoining, restraining or otherwise prohibiting such
application, then the Company's and each Guarantor's obligations under this
Indenture, the Securities and the Guarantees shall be revived and reinstated
as though no deposit had occurred pursuant to Section 1202 or 1203, as the case
may be, until such time as the Trustee or Paying Agent is permitted to apply
all such money in accordance with Section 1205; provided, however, that if the
Company makes any payment of principal of (or premium, if any, on) or interest
on any Security following the reinstatement of its obligations, the Company
shall be subrogated to the rights of the Holders of such Securities to receive
such payment from the money held by the Trustee or Paying Agent.

                               ARTICLE THIRTEEN

                                   GUARANTEE

         SECTION 1301.  Guarantee.

         Subject to the provisions of this Article Thirteen, each Guarantor
hereby irrevocably and unconditionally guarantees, jointly and severally, on a
senior subordinated basis to each Holder and to the Trustee, on behalf of the
Holders, (i) the due and punctual payment of the principal of and interest on
each Security, when and as the same shall become due and payable, whether at
Stated Maturity, purchase upon Change in Control or Redemption Date, and
whether by declaration of acceleration, Change in Control, call for redemption
or purchase or otherwise, the due and punctual payment of interest on the
overdue principal of and interest, if any, on the Securities, to the extent
lawful, and the due and punctual performance of all other obligations of the
Company to the Holders or the Trustee all in accordance with the terms of such
Security and this Indenture and (ii) in the case of any extension of time of
payment or renewal of any Securities or any of such other obligations, that
the same will be promptly paid in full when due or performed in accordance
with the terms of the extension or renewal, at Stated Maturity, purchase upon
Change in Control or Redemption Date, and whether by declaration of
acceleration, Change in Control, call for redemption or purchase or otherwise
(the obligations in clauses (i) and (ii) hereof being the "Guaranteed
Obligations").  Without limiting the generality of the foregoing, each
Guarantor's liability shall extend to all amounts that constitute part of the
Guaranteed Obligations and would be owed by the Company to the Holders or the
Trustee under the Securities and the Indenture but for the fact that they are
unenforceable or not allowable due to the existence of a bankruptcy,
reorganization or similar proceeding involving the Company.  The Guarantors
hereby agree that their obligations hereunder shall be absolute and
unconditional, irrespective of, and shall be unaffected by, any invalidity,
irregularity or unenforceability of any such Security or this Indenture, any
failure to enforce the provisions of any such Security or this Indenture, any
waiver, modification or indulgence granted to the Company with respect thereto,
by any Guaranteed Party or any other circumstances which may otherwise
constitute a legal or equitable discharge or defense of the Company or a
surety or guarantor.  The Guarantors hereby waive diligence, presentment,
filing of claims with a court in the event of merger or bankruptcy of the
Company, any right to require a  proceeding first against the Company, the
benefit of discussion, protest or notice with respect to any such Security or
the Indebtedness evidenced thereby and all demands whatsoever (except as
specified above), and covenant that this Guarantee will not be discharged as
to any such Security except by payment in full of the Guaranteed Obligations
and as provided in Sections 401, 1202 and 1320.  Each Guarantor further agrees
that, as between such Guarantor and the Guaranteed Parties, (i) the maturity
of the Guaranteed Obligations may be accelerated as provided in Article Five
for the purposes of this Guarantee, notwithstanding any stay, injunction or
other prohibition preventing such acceleration in respect of the Guaranteed
Obligations, and (ii) in the event of any declaration of acceleration of such
Guaranteed Obligations as provided in Article Five, such Guaranteed
Obligations (whether or not due and payable) shall forthwith become due and
payable by each Guarantor for the purpose of this Guarantee.  In addition,
without limiting the foregoing provisions, upon the effectiveness of an
acceleration under Article Five, the Trustee shall promptly make a demand for
payment on the Securities under each Guarantee provided for in this Article
Thirteen and not discharged.

         Each Guarantor hereby irrevocably waives any claim or other rights
that it may now or hereafter acquire against the Company that arise from the
existence, payment, performance or enforcement of such Guarantor's obligations
under this Indenture, or any other document or instrument including, without
limitation, any right of subrogation, reimbursement, exoneration,
contribution, indemnification, any right to participate in any claim or remedy
of the Guaranteed Parties against the Company, whether or not such claim,
remedy or right arises in equity, or under contract, statute or common law,
including, without limitation, the right to take or receive from the Company,
directly or indirectly, in cash or other property or in any other manner,
payment or security on account of such claim or other rights.  If any amount
shall be paid to any Guarantor in violation of the preceding sentence and the
Guaranteed Obligations shall not have been paid in full, such amount shall be
deemed to have been paid to such Guarantor for the benefit of, and held in
trust for the benefit of, the Guaranteed Parties, and shall forthwith be paid
to the Trustee.  Each Guarantor acknowledges that it will receive direct and
indirect benefits from the issuance of the Securities and that the waiver set
forth in this paragraph is knowingly made in contemplation of such benefits.

         SECTION 1302.  Obligations of the Guarantors Unconditional.

         Nothing contained in this Article Thirteen, elsewhere in this
Indenture or in any Security or in the Guarantee is intended to or shall
impair, as between the Guarantors and the Holders, the obligation of the
Guarantors, which obligations are independent of the obligations of the
Company under the Securities and this Indenture and are absolute and
unconditional, to pay to the Holders the Guaranteed Obligations as and when
the same shall become due and payable in accordance with the provisions of
this Guarantee and this Indenture, or is intended to or shall affect the
relative rights of the Holders and creditors of the Guarantors other than the
holders of Guarantor Senior Indebtedness, nor shall anything herein or therein
prevent the Trustee or any Holder from exercising all remedies otherwise
permitted by applicable law upon Default under this Indenture, subject to the
rights, if any, under Sections 1304 through 1317 hereof of the holders of
Guarantor Senior Indebtedness.  Each payment to be made by any Guarantor
hereunder in respect of the Guaranteed Obligations shall be payable in the
currency or currencies in which such Guaranteed Obligations are denominated.

         SECTION 1303.  Execution of Guarantee.

         To evidence its obligations under this Article Thirteen, each
Guarantor hereby agrees to execute a guarantee substantially in the form set
forth in Section 205 hereof, to be endorsed on each Security authenticated and
delivered by the Trustee and that this Indenture shall be executed on behalf
of the Guarantors by their respective Chairmen of the Board, Presidents or
Vice Presidents, under their corporate seals reproduced thereon attested by
their respective Secretaries or Assistant Secretaries.  The signature of any
of these officers on the Securities may be manual or facsimile.  Each
Guarantor hereby agrees that its Guarantee set forth in this Article Thirteen
shall remain in full force and effect notwithstanding any failure to endorse
such Guarantee on any Security.

         If an officer whose signature is on this Indenture no longer holds
that office at the time the Trustee authenticates a Security on which this
Guarantee is endorsed, the Guarantee shall be valid nevertheless.

         SECTION 1304.  Guarantees Subordinate to Guarantor Senior
Indebtedness.

         Each Guarantor covenants and agrees, and each Holder of a Security,
by his acceptance thereof, likewise covenants and agrees, that the Guarantees
shall be unsecured obligations of the Guarantors issuing such Guarantees and
each such Guarantor and Holder covenants and agrees, for the benefit of the
holders, from time to time, of Guarantor Senior Indebtedness that, to the
extent and in the manner hereinafter set forth in this Article, the
Indebtedness represented by the Guarantees and the payment pursuant to the
Guarantees by such Guarantor of the principal of (and premium, if any, on) and
interest on each and all of the Securities, and all other amounts of any kind
whatsoever payable in respect of the Securities, including, without
limitation, on account of any purchase or redemption or other acquisition of
Securities or any claim for rescission or damages (collectively, the
"Subordinated Guarantor Obligations"), are hereby expressly made subordinate
and subject in right of payment as provided in this Article to the prior
payment in full in cash or Cash Equivalents of all Guarantor Senior
Indebtedness; provided, however, that the Guarantees, the Indebtedness
represented thereby and the payment pursuant to the Guarantees by such
Guarantor of the principal of (and premium, if any, on) and interest on the
Securities in all respects shall rank pari passu with, or senior in right of
payment to, all other existing and future Indebtedness of such Guarantor that
is subordinated to Guarantor Senior Indebtedness.

         The provisions of this Article Thirteen shall constitute a continuing
offer to all Persons that, in reliance upon such provisions, become holders
of, or continue to hold Guarantor Senior Indebtedness; such provisions are
made for the benefit of the holders of Guarantor Senior Indebtedness and they
or each of them may enforce the rights of holders of Guarantor Senior
Indebtedness hereunder, subject to the terms and provisions hereof.

         SECTION 1305.  Payment over of Proceeds upon Dissolution, etc.

         In the event of (a) any insolvency or bankruptcy case or proceeding,
or any receivership, liquidation, reorganization or other similar case or
proceeding in connection therewith, relative to any Guarantor or to its
creditors, as such, or to its assets, or (b) any liquidation, dissolution or
other winding up of any Guarantor, whether voluntary or involuntary and
whether or not involving insolvency or bankruptcy, or (c) any assignment for
the benefit of creditors or any other marshalling of assets or liabilities of
any Guarantor, then and in any such event

         (1)   the holders of such Guarantor's Guarantor Senior Indebtedness
   shall be entitled to receive payment in full in cash or Cash Equivalents of
   all amounts due on or in respect of all such Guarantor Senior Indebtedness,
   or provision shall be made for such payment in a manner satisfactory to (x)
   in the case of such Guarantor's Guarantor Senior Indebtedness in respect of
   the New Bank Credit Agreement, the holders of two-thirds in principal
   amount of outstanding Indebtedness under the New Bank Credit Agreement to be
   so provided for and (y) in the case of other Designated Guarantor Senior
   Indebtedness of such Guarantor, the holders of two-thirds in principal
   amount of such other outstanding Designated Guarantor Senior Indebtedness
   to be so provided for, before the Holders of the Securities are entitled to
   receive, pursuant to the Guarantees, from any source any payment or
   distribution of any kind or character (including any payment or distribution
   which may be payable or deliverable by reason of the payment of any other
   Indebtedness of such Guarantor subordinate in right of payment to the
   payment of the Guarantees (such payment or distribution hereinafter being
   "Junior Subordinated Guarantor Payments"), but excluding (such exclusion to
   be without prejudice to the holders of Guarantor Senior Indebtedness in
   their capacity as such) any payment or distribution in the form of equity
   securities or subordinated securities of such Guarantor or any successor
   obligor with respect to the Indebtedness represented by the Guarantees
   provided for by a plan of reorganization or readjustment that, in the case
   of any such subordinated securities, are subordinated in right of payment
   to all Guarantor Senior Indebtedness of such Guarantor that may at the time
   be outstanding to at least the same extent as the Guarantees are so
   subordinated as provided in this Article (such equity securities or
   subordinated securities hereinafter being "Permitted Junior Guarantor
   Securities")) on account of Subordinated Guarantor Obligations;

         (2)   any payment or distribution of assets of such Guarantor of any
   kind or character, whether in cash, property or securities (including a
   Junior Subordinated Guarantor Payment, but excluding a payment or
   distribution in the form of Permitted Junior Guarantor Securities), by
   set-off or otherwise, to which the Holders or the Trustee would be entitled
   but for the provisions of this Article shall be paid by the liquidating
   trustee or agent or other person making such payment or distribution,
   whether a trustee in bankruptcy, a receiver or liquidating trustee or
   otherwise, directly to the holders of such Guarantor's Guarantor Senior
   Indebtedness or their representative or representatives or to the trustee
   or trustees under any indenture under which any instruments evidencing any
   of such Guarantor Senior Indebtedness may have been issued, ratably
   according to the aggregate amounts remaining unpaid on account of such
   Guarantor Senior Indebtedness held or represented by each, to the extent
   necessary to make payment in full in cash or Cash Equivalents of all such
   Guarantor Senior Indebtedness remaining unpaid, after giving effect to any
   concurrent payment or distribution to the holders of such Guarantor Senior
   Indebtedness; and

         (3)   in the event that, notwithstanding the foregoing provisions of
   this Section, the Trustee or the Holder of any Security shall have received
   any payment or distribution of assets of such Guarantor of any kind or
   character, whether in cash, property or securities, pursuant to the
   Guarantees in respect of the Subordinated Guarantor Obligations before all
   of such Guarantor's Guarantor Senior Indebtedness is paid in full in cash or
   Cash Equivalents or payment thereof provided for in a manner satisfactory
   to (x) in the case of such Guarantor's Guarantor Senior Indebtedness in
   respect of the New Bank Credit Agreement, the holders of two-thirds in
   principal amount of outstanding Indebtedness under the New Bank Credit
   Agreement so provided for and (y) in the case of other Designated Guarantor
   Senior Indebtedness of such Guarantor, the holders of two-thirds in
   principal amount of such other outstanding Designated Guarantor Senior
   Indebtedness so provided for, then and in such event such payment or
   distribution (including a Junior Subordinated Guarantor Payment, but
   excluding a payment or distribution in the form of Permitted Junior
   Guarantor Securities) shall be held in trust for the benefit of the holders
   of such Guarantor's Guarantor Senior Indebtedness and shall be paid over or
   delivered forthwith to the trustee in bankruptcy, receiver, liquidating
   trustee, custodian, assignee, agent or other Person making payment or
   distribution of assets of such Guarantor for application to the payment of
   all such Guarantor Senior Indebtedness remaining unpaid, to the extent
   necessary to pay all such Guarantor Senior Indebtedness in full in cash or
   Cash Equivalents, after giving effect to any concurrent payment or
   distribution to or for the holders of such Guarantor Senior Indebtedness.

         The consolidation, amalgamation, continuance or redomestication of
ADT Limited or consolidation of any Subsidiary of ADT Limited with, or the
merger of ADT Limited or any Subsidiary of ADT Limited into, another Person or
the liquidation or dissolution of ADT Limited or any Subsidiary of ADT Limited
following the conveyance, transfer or lease of all or substantially all of its
properties and assets to  another Person, in each case, upon the terms and
conditions set forth in Article Eight hereof shall not be deemed a
dissolution, winding up, liquidation, reorganization, assignment for the
benefit of creditors or marshalling of assets and liabilities of any Guarantor
for the purposes of this Section if the Person formed by such consolidation,
amalgamation, continuance or redomestication of ADT Limited or consolidation of
any Subsidiary of ADT Limited or into which ADT Limited or any Subsidiary of
ADT Limited is merged or the Person which acquires by conveyance, transfer or
lease all or substantially all of such properties and assets, as the case may
be, shall, as a part of such consolidation, amalgamation, continuance,
redomestication, merger, conveyance, transfer or lease, comply with the
conditions set forth in Article Eight.

         SECTION 1306.  Suspension of Payment When Designated Guarantor Senior
Indebtedness in Default.

         (a)   Unless Section 1305 shall be applicable, upon the occurrence of
a Guarantor Payment Default with respect to any Guarantor, then no payment or
distribution of any kind or character, whether in cash, property or
securities, shall be made by or on behalf of such Guarantor (other than
payments made on an arm's-length basis by any Person that is not an Affiliate
of such Guarantor) on account of such Guarantor's Subordinated Guarantor
Obligations unless and until such Guarantor Payment Default shall have been
cured or waived in writing or shall have ceased to exist or such Guarantor
Senior Indebtedness shall have been discharged in full in cash or Cash
Equivalents, after which such Guarantor shall resume making any and all
required payments in respect of its obligations under the Guarantees,
including any missed payments.

         (b)   Unless Section 1305 shall be applicable, upon the occurrence of
a Guarantor Non-payment Default with respect to any Guarantor, then no payment
or distribution of any kind or character, whether in cash, property or
securities, shall be made by or on behalf of such Guarantor (other than
payments made on an arm's-length basis by any Person that is not an Affiliate
of such Guarantor) on account of such Guarantor's Subordinated Guarantor
Obligations for the period or periods specified below (a "Guarantor Payment
Blockage Period").  A Guarantor Payment Blockage Period shall commence on the
date of receipt by the Trustee of written notice of such occurrence from the
Agent (or any other representative of holders of Designated Guarantor Senior
Indebtedness) or if such Guarantor Non-payment Default results from the
acceleration of the Securities, on the date of such acceleration and shall end
on the earlier of (x) 179 days (if such event of default is with respect to
Designated  Guarantor Senior Indebtedness under the New Bank Credit Agreement)
or 119 days (if such event of default is with respect to any other Designated
Guarantor Senior Indebtedness) from receipt of such written notice by the
Trustee, (y) the date on which such Guarantor Non-payment Default is cured,
waived or ceases to exist or on which such Designated Guarantor Senior
Indebtedness is discharged in full in cash or Cash Equivalents or (z) such
Guarantor Payment Blockage Period shall have been terminated by written notice
to such Guarantor or the Trustee from the Agent or such other representative
initiating such Guarantor Payment Blockage Period, after which, in each case,
such Guarantor, subject to the subordination provisions described above and
the existence of a Guarantor Payment Default,  shall resume making any and all
required payments in respect of its obligations under the Guarantees,
including any missed payments.  Only one Guarantor Payment Blockage Period may
be commenced within any consecutive 360-day period; provided that, subject to
the limitations set forth in the next sentence, the commencement of a Guarantor
Payment Blockage Period by the representatives for, or the holders of,
Designated Guarantor Senior Indebtedness other than under the New Bank Credit
Agreement or as a result of an acceleration of the Securities shall not bar
the commencement of another Guarantor Payment Blockage Period by the Agent
within such consecutive 360-day period.  Notwithstanding anything in this
Indenture to the contrary, any Guarantor Payment Blockage Period shall be
terminated so that there shall be 180 consecutive days in any 360-day period
in which no Guarantor Payment Blockage Period is in effect.  No event of
default with respect to the Designated Guarantor Senior Indebtedness
initiating a Guarantor Payment Blockage Period (or on whose behalf a Guarantor
Payment Blockage Period was initiated) that existed or was continuing on the
date of the commencement of such Guarantor Payment Blockage Period will be, or
can be made, the basis for the commencement of a second Guarantor Payment
Blockage Period on behalf of such Designated Guarantor Senior Indebtedness
whether or not within a period of 360 consecutive days, unless such event of
default shall have been cured or waived for a period of not less than 90
consecutive days subsequent to the commencement of the initial Guarantor
Payment Blockage Period (it being acknowledged that any subsequent action or
breach that would give rise to a Guarantor Non-payment Default pursuant to any
provision under which a Guarantor Non-payment Default previously existed or
was continuing shall constitute a new Guarantor Non-payment Default for this
purpose, provided that, in the case of a breach of a particular financial
covenant, the Guarantors, the Company and the other Restricted Subsidiaries
subject to such covenant shall have  been in compliance therewith for at least
one full measurement period commencing after the date of commencement of such
Guarantor Payment Blockage Period).  In no event will a Guarantor Payment
Blockage Period extend beyond 179 days.

         (c)   In the event that the Trustee or any Holder of the Securities
receives any payment prohibited by the foregoing, then such payment shall be
held in trust for the holders of Guarantor Senior Indebtedness and shall be
paid over forthwith to the holders of such Guarantor's Guarantor Senior
Indebtedness or their representative or representatives or to the trustee or
trustees under any indenture under which any instruments evidencing any of
such Guarantor Senior Indebtedness may have been issued.

         SECTION 1307.  Payment Permitted If No Default.

         Nothing contained in this Article or elsewhere in this Indenture or
in any of the Securities or Guarantees shall prevent any Guarantor, at any
time except during the pendency of any case, proceeding, dissolution,
liquidation or other winding up, assignment for the benefit of creditors or
other marshalling of assets and liabilities of such Guarantor referred to in
Section 1305 or under the conditions described in Section 1306, from making
payments at any time of principal of (and premium, if any, on) or interest on
the Securities.

         SECTION 1308.  Subrogation to Rights of Holders of Guarantor Senior
Indebtedness.

         Subject to the payment in full in cash or Cash Equivalents of all
Guarantor Senior Indebtedness, the Holders of the Securities shall be
subrogated to the rights of the holders of such Guarantor Senior Indebtedness
to receive payments and distributions of cash, property and securities
applicable to the Guarantor Senior Indebtedness until the Subordinated
Guarantor Obligations shall be paid in full.  For purposes of such
subrogation, no payments or distributions to the holders of Guarantor Senior
Indebtedness of any cash, property or securities to which the Holders of the
Securities or the Trustee would be entitled except for the provisions of this
Article, and no payments over pursuant to the provisions of this Article to
the holders of Guarantor Senior Indebtedness by Holders of the Securities or
the Trustee, shall, as among the Guarantors, their respective creditors other
than holders of Guarantor Senior Indebtedness, and the Holders of the
Securities, be deemed to be a payment or distribution by any Guarantor to or
on account of the Guarantor Senior Indebtedness.

         SECTION 1309.  Trustee to Effectuate Subordination.

         Each Holder of a Security by his acceptance thereof authorizes and
directs the Trustee on his behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article and
appoints the Trustee his attorney-in-fact for any and all such purposes.  If
upon any dissolution, winding up or reorganization of any Guarantor, whether
in bankruptcy, insolvency, receivership proceedings or otherwise, the Trustee
does not file a claim in such proceedings prior to five Business Days before
the expiration of the time to file such claim, the holders of Guarantor Senior
Indebtedness or the Agent may file such a claim on behalf of the Holders of
the Securities.

         SECTION 1310.  No Waiver of Subordination Provisions.

         (a)   No right of any present or future holder of any Guarantor Senior
Indebtedness to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
any Guarantor or by any act or failure to act, in good faith, by any such
holder, or by any non-compliance by any Guarantor with the terms, provisions
and covenants of this Indenture, regardless of any knowledge thereof any such
holder may have or be otherwise charged with.

         (b)   Without in any way limiting the generality of paragraph (a) of
this Section, the holders of Guarantor Senior Indebtedness may, at any time
and from time to time, without the consent of or notice to the Trustee or the
Holders of the Securities, without incurring responsibility to the Holders of
the Securities and without impairing or releasing the subordination provided
in this Article or the obligations hereunder of the Holders of the Securities
to the holders of Guarantor Senior Indebtedness, do any one or more of the
following:  (1) change the manner, place or terms of payment or extend the
time of payment of, or renew or alter, Guarantor Senior Indebtedness or any
instrument evidencing the same or any agreement under which Guarantor Senior
Indebtedness is outstanding; (2) sell, exchange, release or otherwise deal
with any property pledged, mortgaged or otherwise securing Guarantor Senior
Indebtedness; (3) release any Person liable in any manner for the collection
of Guarantor Senior Indebtedness; and (4) exercise or refrain from exercising
any rights against any Guarantor and any other Person.

         SECTION 1311.  Notice to Trustee.

         (a)   Each Guarantor shall give prompt written notice to the Trustee
of any fact known to such Guarantor which would prohibit the making of any
payment to or by the Trustee in respect of the Securities.  Notwithstanding
the provisions of this Article or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts
which would prohibit the making of any payment to or by the Trustee in respect
of the Guarantees, unless and until the Trustee shall have received written
notice thereof from any Guarantor, the Company, the Agent or a holder of
Guarantor Senior Indebtedness or Senior Indebtedness or from any trustee,
fiduciary or agent therefor; and, prior to the receipt of any such written
notice, the Trustee, subject to TIA Sections 315(a) through 315(d), shall be
entitled in all respects to assume that no such facts exist; provided,
however, that, if the Trustee shall not have received the notice provided for
in this Section at least three Business Days prior to the date upon which by
the terms hereof any money may become payable by any Guarantor for any purpose
(including, without limitation, the payment of the principal of (and premium,
if any, on) or interest on any Security), then, anything herein contained to
the contrary notwithstanding, the Trustee shall have full power and authority
to receive such money and to apply the same to the purpose for which such
money was received and shall not be affected by any notice to the contrary
which may be received by it within three Business Days prior to such date.

         (b)   Subject to TIA Sections 315(a) through 315(d), the Trustee
shall be entitled to rely on the delivery to it of a written notice by a
Person representing himself to be a holder of Guarantor Senior Indebtedness
(or a trustee, fiduciary or agent therefor) to establish that such notice has
been given by a holder of Guarantor Senior Indebtedness (or a trustee,
fiduciary or agent therefor).  In the event that the Trustee determines in
good faith that further evidence is required with respect to the right of any
Person as a holder of Guarantor Senior Indebtedness to participate in any
payment or distribution pursuant to this Article, the Trustee may request such
Person to furnish evidence to the reasonable satisfaction of the Trustee as to
the amount of Guarantor Senior Indebtedness held by such Person, the extent to
which such Person is entitled to participate in such payment or distribution
and any other facts pertinent to the rights of such Person under this Article
and, if such evidence is not furnished, the Trustee may defer any payment to
such Person pending judicial determination as to the right of such Person to
receive such payment.

         SECTION 1312.  Reliance on Judicial Order or Certificate of
Liquidating Agent.

         Upon any payment or distribution of assets of any Guarantor referred
to in this Article, the Trustee, subject to TIA Sections 315(a) through
315(d), and the Holders of the Securities shall be entitled to rely upon any
order or decree entered by any court of competent jurisdiction in which such
insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, receiver, liquidating trustee,
custodian, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the Holders of
Securities, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of such Guarantor's
Guarantor Senior Indebtedness and other indebtedness of such Guarantor, the
amount thereof or payable thereon, the amount or amounts paid or distributed
thereon and all other facts pertinent thereto or to this Article.

         SECTION 1313.  Rights of Trustee As a Holder of Guarantor Senior
Indebtedness; Preservation of Trustee's Rights.

         The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Guarantor Senior
Indebtedness which may at any time be held by it, to the same extent as any
other holder of Guarantor Senior Indebtedness, and nothing in this Indenture
shall deprive the Trustee of any of its rights as such holder.  Nothing in
this Article shall apply to claims of, or payments to, the Trustee under or
pursuant to Section 606.

         SECTION 1314.  Article Applicable to Paying Agents.

         In case at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying
Agent within its meaning as fully for all intents and purposes as if such
Paying Agent were named in this Article in addition to or in place of the
Trustee; provided, however, that Sections 1311(a) and 1313 shall not apply to
the Company or any Affiliate of the Company if it or such Affiliate acts as
Paying Agent.

         SECTION 1315.  No Suspension of Remedies.

         Nothing contained in this Article shall limit the right of the
Trustee or the Holders of Securities to take any action to accelerate the
maturity of the Securities pursuant to Article Five or to pursue any rights or
remedies hereunder or under applicable law.

         SECTION 1316.  Trust Moneys Not Subordinated.

         Notwithstanding anything contained herein to the contrary, payments
from cash or the proceeds of U.S. Government Obligations held in trust under
Article Twelve hereof by the Trustee (or other qualifying trustee) and which
were deposited in accordance with the terms of Article Twelve hereof and not
in violation of Section 1306 hereof for the payment of principal of (and
premium, if any, on) and interest on the Securities shall not be subordinated
to the prior payment of any Guarantor Senior Indebtedness or subject to the
restrictions set forth in this Article Thirteen, and none of the Holders shall
be obligated to pay over any such amount to any Guarantor or any holder of
such Guarantor's Guarantor Senior Indebtedness or any other creditor of such
Guarantor.

         SECTION 1317.  Trustee's Relation to Guarantor Senior Indebtedness.

         With respect to the holders of Guarantor Senior Indebtedness, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article, and no implied
covenants or obligations with respect to the holders of Guarantor Senior
Indebtedness shall be read into this Article against the Trustee.  The Trustee
shall not be deemed to owe any fiduciary duty to the holders of Guarantor
Senior Indebtedness and the Trustee shall not be liable to any holder of
Guarantor Senior Indebtedness if it shall mistakenly in the absence of gross
negligence or wilful misconduct pay over or deliver to Holders, the Company or
any other Person moneys or assets to which any holder of Guarantor Senior
Indebtedness shall be entitled by virtue of this Article or otherwise.

         SECTION 1318.  Withholding.

         All payments made by a Guarantor with respect to the Guarantees will
be made without withholding or deduction for, or on account of, any present or
future taxes, duties, assessments or governmental charges of whatever nature
imposed or levied by or on behalf of Bermuda or any other country (other than
the United States) or any political  subdivision thereof or any authority
therein or thereof, having power to tax, unless the withholding or deduction of
such taxes, duties, assessments or governmental charges is then required by
law.  In the event that Bermuda or any other country (other than the United
States) or any political subdivision thereof or any authority therein or
thereof, imposes any such withholding or deduction on (i) any payments made by
a Guarantor with respect to the Guarantees or (ii) any net proceeds on the sale
to or exchange with any Guarantor of the Securities, such Guarantor will pay
such additional amounts (the "Additional Amounts") as may be necessary in
order that the net amounts received in respect of such payments or sale or
exchange by the Holders of the Securities or the Trustee, as the case may be,
after such withholding or deduction shall equal the respective amounts that
would have been received in respect of such payments or sale or exchange in
the absence of such withholding or deduction; except that no such Additional
Amounts shall be payable with respect to any Security held by or on behalf of
a holder who is liable for such taxes, duties, assessments or governmental
charges in respect of such Security by reason of his being a citizen or
resident of, or carrying on a business in, Bermuda or the country of residence
of any Guarantor.  Notwithstanding the foregoing, a Guarantor making a payment
on the Securities pursuant to the Guarantee shall not be required to pay any
Additional Amounts if (i) the beneficial holder of a Security receives by
certified mail (evidenced by a return receipt signed by such beneficial
holder) (A) written notice from such Guarantor no less than 60 days in advance
of making such payment and (B) the appropriate forms or instructions necessary
to enable such beneficial holder to certify or document the availability of an
exemption from, or reduction of, the withholding or deduction of such taxes
under applicable law, which such instructions shall clearly specify that
Additional Amounts hereunder may not be paid if such forms are not completed
by such beneficial holder, and (ii) the Guarantor that would otherwise have to
pay such Additional Amounts establishes to the satisfaction of the Trustee
that the obligation to pay such Additional Amounts would not have arisen but
for the failure of such beneficial holder to (A) duly complete such forms as
were actually received by such beneficial holder or respond to such
instructions and (B) provide to such Guarantor such duly completed forms or
responses to instructions.  Without prejudice to the survival of any other
agreement of the Guarantors hereunder, the agreements and obligations of the
Guarantors contained in this Section 1318 shall survive the payment in full of
the Guaranteed Obligations and all other amounts payable under this Guarantee.

         SECTION 1319.  Release of Guarantee.

         (a)   Concurrently with the payment in full of all of the Guaranteed
Obligations, the Guarantors shall be released from and relieved of their
obligations under this Article Thirteen.  Upon the delivery by the Company to
the Trustee of an Officers' Certificate and, if requested by the Trustee, an
Opinion of Counsel to the effect that the transaction giving rise to the
release of such obligations was made by the Company in accordance with the
provisions of this Indenture and the Securities, the Trustee shall execute any
documents reasonably required in order to evidence the release of the
Guarantors from their obligations.  If any of the Guaranteed Obligations are
revived and reinstated after the termination of this Guarantee, then all of the
obligations of the Guarantors under this Guarantee shall be revived and
reinstated as if this Guarantee had not been terminated until such time as the
Guaranteed Obligations are paid in full, and the Guarantors shall enter into
an amendment to this Guarantee, reasonably satisfactory to the Trustee,
evidencing such revival and reinstatement.

         (b)   Upon (i) the sale or disposition of all of the Common Stock of
a Subsidiary Guarantor (by merger or otherwise) to a Person other than the
Company, ADT Limited or another Restricted Subsidiary and which sale or
disposition is otherwise in compliance with the terms of this Indenture, or
(ii) the unconditional and full release in writing of such Subsidiary
Guarantor from all Subordinated Indebtedness (other than Subordinated
Indebtedness of the Company, ADT  Limited or any other Restricted Subsidiary
owing to ADT Limited, the Company or any other Wholly Owned Restricted
Subsidiary, as the case may be), such Subsidiary Guarantor shall be deemed
released from all obligations under this Article Thirteen; provided, however,
that any such termination upon such sale or disposition shall occur if and
only to the extent that all obligations of such Subsidiary Guarantor under all
of its guarantees of, and under all of its pledges of assets or other security
interests which secure, Indebtedness of the Company, ADT Limited or any
Restricted Subsidiary shall also terminate upon such sale or disposition.
Upon the delivery by the Company to the Trustee of an Officers' Certificate
and, if requested by the Trustee, an Opinion of Counsel to the effect that the
transaction giving rise to the release of such obligations was made in
accordance with the provisions of this Indenture and the Securities, the
Trustee shall execute any documents reasonably required in order to evidence
the release of such Subsidiary Guarantor from its obligations.  Any Subsidiary
Guarantor not so released remains liable for the full amount of principal of
and interest on the Securities as provided in this Article Thirteen.

                               ARTICLE FOURTEEN

                          SUBORDINATION OF SECURITIES

         SECTION 1401.  Securities Subordinate to Senior Indebtedness.

         The Company covenants and agrees, and each Holder of a Security, by
his acceptance thereof, likewise covenants and agrees, for the benefit of the
holders, from time to time, of Senior Indebtedness that, to the extent and in
the manner hereinafter set forth in this Article, the Indebtedness represented
by the Securities and the payment of the principal of (and premium, if any,
on) and interest on each and all of the Securities, and all other amounts of
any kind whatsoever payable in respect of the Securities, including, without
limitation, on account of any purchase or redemption or other acquisition of
Securities or any claim for rescission or damages (collectively, the
"Subordinated Obligations"), are hereby expressly made subordinate and subject
in right of payment as provided in this Article to the prior payment in full
in cash or Cash Equivalents of all Senior Indebtedness; provided, however,
that the Securities, the Indebtedness represented thereby and the payment of
the  principal of (and premium, if any, on) and interest on the Securities in
all respects shall rank pari passu with, or senior in right of payment to, all
other existing and future Indebtedness of the Company that is subordinated to
Senior Indebtedness.

         The provisions of this Article Fourteen shall constitute a continuing
offer to all Persons that, in reliance upon such provisions, become holders
of, or continue to hold Senior Indebtedness; such provisions are made for the
benefit of the holders of Senior Indebtedness and they or each of them may
enforce the rights of holders of Senior Indebtedness hereunder, subject to the
terms and provisions hereof.

         SECTION 1402.  Payment over of Proceeds upon Dissolution, etc.

         In the event of (a) any insolvency or bankruptcy case or proceeding,
or any receivership, liquidation, reorganization or other similar case or
proceeding in connection therewith, relative to the Company or to its
creditors, as such, or to its assets, or (b) any liquidation, dissolution or
other winding up of the Company, whether voluntary or involuntary and whether
or not involving insolvency or bankruptcy, or (c) any assignment for the
benefit of creditors or any other marshalling of assets or liabilities of the
Company, then and in any such event

         (1)   the holders of Senior Indebtedness shall be entitled to receive
   payment in full in cash or Cash Equivalents of all amounts due on or in
   respect of all Senior Indebtedness, or provision shall be made for such
   payment in a manner satisfactory to (x) in the case of Senior Indebtedness
   in respect of the New Bank Credit Agreement, the holders of two-thirds in
   principal amount of outstanding Indebtedness under the New Bank Credit
   Agreement to be so provided for and (y) in the case of other Designated
   Senior Indebtedness, the holders of two-thirds in principal amount of such
   other outstanding Designated Senior Indebtedness to be so provided for,
   before the Holders of the Securities are entitled to receive from any
   source any payment or distribution of any kind or character (including any
   payment or distribution which may be payable or deliverable by reason of
   the payment of any other Indebtedness of the Company subordinate in right of
   payment to the payment of the Securities (such payment or distribution
   hereinafter being "Junior Subordinated Payments"), but excluding (such
   exclusion to be without prejudice to the holders of Senior Indebtedness in
   their capacity as such) any payment or distribution in the form of equity
   securities or subordinated securities of the Company or any successor
   obligor with respect to the Indebtedness represented by the Securities
   provided for by a plan of reorganization or readjustment that, in the case
   of any such subordinated securities, are subordinated in right of payment
   to all Senior Indebtedness that may at the time be outstanding to at least
   the same extent as the Securities are so subordinated as provided in this
   Article (such equity securities or subordinated securities hereinafter being
   "Permitted Junior Securities")) on account of Subordinated Obligations;

         (2)   any payment or distribution of assets of the Company of any
   kind or character, whether in cash, property or securities (including a
   Junior Subordinated Payment, but excluding a payment or distribution in the
   form of Permitted Junior Securities), by set-off or otherwise, to which the
   Holders or the Trustee would be entitled but for the provisions of this
   Article shall be paid by the liquidating trustee or agent or other person
   making such payment or distribution, whether a trustee in bankruptcy, a
   receiver or liquidating trustee or otherwise, directly to the holders of
   Senior Indebtedness or their representative or representatives or to the
   trustee or trustees under any indenture under which any instruments
   evidencing any of such Senior Indebtedness may have been issued, ratably
   according to the aggregate amounts remaining unpaid on account of the
   Senior Indebtedness held or represented by each, to the extent necessary to
   make payment in full in cash or Cash Equivalents of all Senior Indebtedness
   remaining unpaid, after giving effect to any concurrent payment or
   distribution to the holders of such Senior Indebtedness; and

         (3)   in the event that, notwithstanding the foregoing provisions of
   this Section, the Trustee or the Holder of any Security shall have received
   any payment or distribution of assets of the Company of any kind or
   character, whether in cash, property or securities, in respect of the
   Subordinated Obligations before all Senior Indebtedness is paid in full in
   cash or Cash Equivalents or payment thereof provided for in a manner
   satisfactory to (x) in the case of Senior Indebtedness in respect of the
   New Bank Credit Agreement, the holders of two-thirds in principal amount of
   outstanding Indebtedness under the New Bank Credit Agreement so provided
   for and (y) in the case of other Designated Senior Indebtedness, the
   holders of two-thirds in principal amount of such other outstanding
   Designated Senior Indebtedness so provided for, then and in such event such
   payment or distribution (including a Junior Subordinated Payment, but
   excluding a payment or distribution in the form of Permitted Junior
   Securities) shall be held in trust for the benefit of the holders of Senior
   Indebtedness and shall be paid over or delivered forthwith to the trustee
   in bankruptcy, receiver, liquidating trustee, custodian, assignee, agent or
   other Person making payment or distribution of assets of the Company for
   application to the payment of all Senior Indebtedness remaining unpaid, to
   the extent necessary to pay all Senior Indebtedness in full in cash or Cash
   Equivalents, after giving effect to any concurrent payment or distribution
   to or for the holders of Senior Indebtedness.

         The consolidation, amalgamation, continuance or redomestication of
ADT Limited or consolidation of any Subsidiary of ADT Limited with, or the
merger of ADT Limited or any Subsidiary of ADT Limited into, another Person or
the liquidation or dissolution of ADT Limited or any Subsidiary of ADT Limited
following the conveyance, transfer or lease of all or substantially all of its
properties and assets to another Person, in each case, upon the terms and
conditions set forth in Article Eight hereof shall not be deemed a
dissolution, winding up, liquidation, reorganization, assignment for the
benefit of creditors or marshalling of assets and liabilities of the Company
for the purposes of this Section if the Person formed by such consolidation,
amalgamation, continuance or redomestication of ADT Limited or consolidation of
any Subsidiary of ADT Limited or into which ADT Limited or any Subsidiary of
ADT Limited is merged or the Person which acquires by conveyance, transfer or
lease all or substantially all of such properties and assets, as the case may
be, shall, as a part of such consolidation, amalgamation, continuance,
redomestication, merger, conveyance, transfer or lease, comply with the
conditions set forth in Article Eight.

         SECTION 1403.  Suspension of Payment When Designated Senior
Indebtedness in Default.

         (a)   Unless Section 1402 shall be applicable, upon the occurrence of
a Payment Default, then no payment or distribution of any kind or character,
whether in cash, property or securities, shall be made by or on behalf of the
Company or any Guarantor (other than payments made on an arm's-length basis by
any Person that is not an Affiliate of the Company or such Guarantor) on
account of the Subordinated Obligations unless and until such Payment Default
shall have  been cured or waived in writing or shall have ceased to exist or
such Senior Indebtedness shall have been discharged in full in cash or Cash
Equivalents, after which the Company and the Guarantors shall resume making
any and all required payments in respect of the Securities, including any
missed payments.

         (b)   Unless Section 1402 shall be applicable, upon the occurrence of
a Non-payment Default, then no payment or distribution of any kind or
character, whether in cash, property or securities, shall be made by or on
behalf of the Company or any Guarantor (other than payments made on an
arm's-length basis by any Person that is not an Affiliate of the Company or
such Guarantor) on account of the Subordinated Obligations for the period or
periods specified below (a "Payment Blockage Period").  A Payment Blockage
Period shall commence on the date of receipt by the Trustee of written notice
of such occurrence from the Agent (or any other representative of holders of
Designated Senior Indebtedness) or if such Non-payment Default results from
the acceleration of the Securities, on the date of such acceleration and shall
end on the earlier of (x) 179 days (if such event of default is with respect
to Designated Senior Indebtedness under the New Bank Credit Agreement) or 119
days (if such event of default is with respect to any other Designated Senior
Indebtedness) from receipt of such written notice by the Trustee, (y) the date
on which such Non-payment Default is cured, waived or ceases to exist or on
which such Designated Senior Indebtedness is discharged in full in cash or
Cash Equivalents or (z) such Payment Blockage Period shall have been
terminated by written notice to the Company or the Trustee from the Agent or
such other representative initiating such Payment Blockage Period, after
which, in each case, the Company and the Guarantors, subject to the
subordination provisions described above and the existence of a Payment
Default,  shall resume making any and all required payments in respect of the
Securities, including any missed payments.  Only one Payment Blockage Period
may be commenced within any consecutive 360-day period; provided that, subject
to the limitations set forth in the next sentence, the commencement of a
Payment Blockage Period by the representatives for, or the holders of,
Designated Senior Indebtedness other than under the New Bank Credit Agreement
or as a result of an acceleration of the Securities shall not bar the
commencement of another Payment Blockage Period by the Agent within such
consecutive 360-day period.  Notwithstanding anything in this Indenture to the
contrary, any Payment Blockage Period shall be terminated so that there shall
be 180 consecutive days in any 360-day period in which no Payment Blockage
Period is in effect.  No event of default with respect to the Designated
Senior Indebtedness initiating  a Payment Blockage Period (or on whose behalf
a Payment Blockage Period was initiated) that existed or was continuing on the
date of the commencement of such Payment Blockage Period will be, or can be
made, the basis for the commencement of a second Payment Blockage Period on
behalf of such Designated Senior Indebtedness whether or not within a period
of 360 consecutive days, unless such event of default shall have been cured or
waived for a period of not less than 90 consecutive days subsequent to the
commencement of the initial Payment Blockage Period (it being acknowledged
that any subsequent action or breach that would give rise to a Non-payment
Default pursuant to any provision under which a Non-payment Default previously
existed or was continuing shall constitute a new Non-payment Default for this
purpose, provided that, in the case of a breach of a particular financial
covenant, the Company, ADT Limited and the other Restricted Subsidiaries
subject to such covenant shall have been in compliance therewith for at least
one full measurement period commencing after the date of commencement of such
Payment Blockage Period).  In no event will a Payment Blockage Period extend
beyond 179 days.

         (c)   In the event that the Trustee or any Holder of the Securities
receives any payment prohibited by the foregoing, then such payment shall be
held in trust for the holders of Senior Indebtedness and shall be paid over
forthwith to the holders of Senior Indebtedness or their representative or
representatives or to the trustee or trustees under any indenture under which
any instruments evidencing any of such Senior Indebtedness may have been
issued.

         SECTION 1404.  Payment Permitted If No Default.

         Nothing contained in this Article or elsewhere in this Indenture or
in any of the Securities shall prevent the Company, at any time except during
the pendency of any case, proceeding, dissolution, liquidation or other
winding up, assignment for the benefit of creditors or other marshalling of
assets and liabilities of the Company referred to in Section 1402 or under the
conditions described in Section 1403, from making payments at any time of
principal of (and premium, if any, on) or interest on the Securities.

         SECTION 1405.  Subrogation to Rights of Holders of Senior
Indebtedness.

         Subject to the payment in full in cash or Cash Equivalents of all
Senior Indebtedness, the Holders of the Securities shall be subrogated to the
rights of the holders of such Senior Indebtedness to receive payments and
distributions of cash, property and securities applicable to  the Senior
Indebtedness until the Subordinated Obligations shall be paid in full.  For
purposes of such subrogation, no payments or distributions to the holders of
Senior Indebtedness of any cash, property or securities to which the Holders
of the Securities or the Trustee would be entitled except for the provisions
of this Article, and no payments over pursuant to the provisions of this
Article to the holders of Senior Indebtedness by Holders of the Securities or
the Trustee, shall, as among the Company, the Guarantors, their respective
creditors other than holders of Senior Indebtedness, and the Holders of the
Securities, be deemed to be a payment or distribution by the Company or any
Guarantor to or on account of the Senior Indebtedness.

         SECTION 1406.  Provisions Solely to Define Relative Rights.

         The provisions of this Article are and are intended solely for the
purpose of defining the relative rights of the Holders of the Securities on
the one hand and the holders of Senior Indebtedness on the other hand.
Nothing contained in this Article or elsewhere in this Indenture or in the
Securities is intended to or shall (a) impair, as between the Company, the
Guarantors and the Holders of the Securities, the obligation of the Company
and the Guarantors, which is absolute and unconditional, to pay to the Holders
of the Securities the Subordinated Obligations as and when the same shall
become due and payable in accordance with their terms; or (b) affect the
relative rights against the Company and the Guarantors of the Holders of the
Securities and creditors of the Company and the Guarantors other than the
holders of Senior Indebtedness; or (c) prevent the Trustee or the Holder of
any Security from exercising all remedies otherwise permitted by applicable
law upon Default under this Indenture, subject to the rights, if any, under
this Article of the holders of Senior Indebtedness.

         SECTION 1407.  Trustee to Effectuate Subordination.

         Each Holder of a Security by his acceptance thereof authorizes and
directs the Trustee on his behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article and
appoints the Trustee his attorney-in-fact for any and all such purposes.  If
upon any dissolution, winding up or reorganization of the Company, whether in
bankruptcy, insolvency, receivership proceedings or otherwise, the Trustee
does not file a claim in such proceedings prior to five Business Days before
the expiration of the time to file such claim, the holders of Senior
Indebtedness or the Agent may file such a claim on behalf of the Holders of
the Securities.

         SECTION 1408.  No Waiver of Subordination Provisions.

         (a)   No right of any present or future holder of any Senior
Indebtedness to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
the Company or any Guarantor or by any act or failure to act, in good faith,
by any such holder, or by any non-compliance by the Company or any Guarantor
with the terms, provisions and covenants of this Indenture, regardless of any
knowledge thereof any such holder may have or be otherwise charged with.

         (b)   Without in any way limiting the generality of paragraph (a) of
this Section, the holders of Senior Indebtedness may, at any time and from
time to time, without the consent of or notice to the Trustee or the Holders
of the Securities, without incurring responsibility to the Holders of the
Securities and without impairing or releasing the subordination provided in
this Article or the obligations hereunder of the Holders of the Securities to
the holders of Senior Indebtedness, do any one or more of the following:  (1)
change the manner, place or terms of payment or extend the time of payment of,
or renew or alter, Senior Indebtedness or any instrument evidencing the same
or any agreement under which Senior Indebtedness is outstanding; (2) sell,
exchange, release or otherwise deal with any property pledged, mortgaged or
otherwise securing Senior Indebtedness; (3) release any Person liable in any
manner for the collection of Senior Indebtedness; and (4) exercise or refrain
from exercising any rights against the Company and any other Person.

         SECTION 1409.  Notice to Trustee.

         (a)   The Company shall give prompt written notice to the Trustee of
any fact known to the Company which would prohibit the making of any payment
to or by the Trustee in respect of the Securities.  Notwithstanding the
provisions of this Article or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts
which would prohibit the making of any payment to or by the Trustee in respect
of the Securities, unless and until the Trustee shall have received written
notice thereof from the Company, any Guarantor, the Agent or a holder of
Senior Indebtedness or Guarantor Senior Indebtedness or from any trustee,
fiduciary or agent therefor; and, prior to the receipt of any such written
notice, the Trustee, subject to TIA Sections 315(a) through 315(d), shall be
entitled in all respects to assume that no such facts exist; provided,
however, that, if the Trustee shall not have received the notice provided for
in this Section at least three Business Days prior to the date upon which by
the terms hereof any  money may become payable for any purpose (including,
without limitation, the payment of the principal of (and premium, if any, on)
or interest on any Security), then, anything herein contained to the contrary
notwithstanding, the Trustee shall have full power and authority to receive
such money and to apply the same to the purpose for which such money was
received and shall not be affected by any notice to the contrary which may be
received by it within three Business Days prior to such date.

         (b)   Subject to TIA Sections 315(a) through 315(d), the Trustee
shall be entitled to rely on the delivery to it of a written notice by a
Person representing himself to be a holder of Senior Indebtedness (or a
trustee, fiduciary or agent therefor) to establish that such notice has been
given by a holder of Senior Indebtedness (or a trustee, fiduciary or agent
therefor).  In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any Person as a
holder of Senior Indebtedness to participate in any payment or distribution
pursuant to this Article, the Trustee may request such Person to furnish
evidence to the reasonable satisfaction of the Trustee as to the amount of
Senior Indebtedness held by such Person, the extent to which such Person is
entitled to participate in such payment or distribution and any other facts
pertinent to the rights of such Person under this Article and, if such evidence
is not furnished, the Trustee may defer any payment to such Person pending
judicial determination as to the right of such Person to receive such payment.

         SECTION 1410.  Reliance on Judicial Order or Certificate of
Liquidating Agent.

         Upon any payment or distribution of assets of the Company referred to
in this Article, the Trustee, subject to TIA Sections 315(a) through 315(d),
and the Holders of the Securities shall be entitled to rely upon any order or
decree entered by any court of competent jurisdiction in which such
insolvency, bankruptcy, receivership, liquidation, reorganization,
dissolution, winding up or similar case or proceeding is pending, or a
certificate of the trustee in bankruptcy, receiver, liquidating trustee,
custodian, assignee for the benefit of creditors, agent or other Person making
such payment or distribution, delivered to the Trustee or to the Holders of
Securities, for the purpose of ascertaining the Persons entitled to
participate in such payment or distribution, the holders of Senior
Indebtedness and other indebtedness of the Company, the amount thereof or
payable thereon, the amount or amounts paid or distributed thereon and all
other facts pertinent thereto or to this Article.

         SECTION 1411.  Rights of Trustee As a Holder of Senior Indebtedness;
Preservation of Trustee's Rights.

         The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article with respect to any Senior Indebtedness which
may at any time be held by it, to the same extent as any other holder of
Senior Indebtedness, and nothing in this Indenture shall deprive the Trustee
of any of its rights as such holder.  Nothing in this Article shall apply to
claims of, or payments to, the Trustee under or pursuant to Section 606.

         SECTION 1412.  Article Applicable to Paying Agents.

         In case at any time any Paying Agent other than the Trustee shall
have been appointed by the Company and be then acting hereunder, the term
"Trustee" as used in this Article shall in such case (unless the context
otherwise requires) be construed as extending to and including such Paying
Agent within its meaning as fully for all intents and purposes as if such
Paying Agent were named in this Article in addition to or in place of the
Trustee; provided, however, that Sections 1409(a) and 1411 shall not apply to
the Company or any Affiliate of the Company if it or such Affiliate acts as
Paying Agent.

         SECTION 1413.  No Suspension of Remedies.

         Nothing contained in this Article shall limit the right of the
Trustee or the Holders of Securities to take any action to accelerate the
maturity of the Securities pursuant to Article Five or to pursue any rights or
remedies hereunder or under applicable law.

         SECTION 1414.  Trust Moneys Not Subordinated.

         Notwithstanding anything contained herein to the contrary, payments
from cash or the proceeds of U.S. Government Obligations held in trust under
Article Twelve hereof by the Trustee (or other qualifying trustee) and which
were deposited in accordance with the terms of Article Twelve hereof and not
in violation of Section 1403 hereof for the payment of principal of (and
premium, if any, on) and interest on the Securities shall not be subordinated
to the prior payment of any Senior Indebtedness or subject to the restrictions
set forth in this Article Fourteen, and none of the Holders shall be obligated
to pay over any such amount to the Company or any holder of Senior
Indebtedness or any other creditor of the Company.

         SECTION 1415.  Trustee's Relation to Senior Indebtedness.

         With respect to the holders of Senior Indebtedness, the Trustee
undertakes to perform or to observe only such of its covenants and obligations
as are specifically set forth in this Article, and no implied covenants or
obligations with respect to the holders of Senior Indebtedness shall be read
into this Article against the Trustee.  The Trustee shall not be deemed to owe
any fiduciary duty to the holders of Senior Indebtedness and the Trustee shall
not be liable to any holder of Senior Indebtedness if it shall mistakenly in
the absence of gross negligence or wilful misconduct pay over or deliver to
Holders, the Company or any other Person moneys or assets to which any holder
of Senior Indebtedness shall be entitled by virtue of this Article or
otherwise.

         This Indenture may be signed in any number of counterparts each of
which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same Indenture.

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                          ADT OPERATIONS, INC.


     [SEAL]                               By /s/ Jan S. Beck
                                             ------------------
                                             Title:

Attest: /s/ Steven Levine
        ------------------
        Title:

                                          ADT LIMITED


     [SEAL]                               By /s/ Stephen Ruzika
                                             -------------------
                                             Title:

Attest:
        ------------------
        Title:

                                          THE BANK OF NEW YORK


     [SEAL]                               By /s/ Sandra Carreker
                                             -------------------
                                             Title:

Attest:
        ------------------
        Title:







<PAGE>

                                                                 EXHIBIT 10.5

                 CREDIT AGREEMENT AMENDMENT NO. 1 AND CONSENT

      THIS CREDIT AGREEMENT AMENDMENT NO. 1 AND CONSENT (this "Amendment"),
dated as of June 27, 1997, among ADT OPERATIONS, INC., a company organized
under the laws of Delaware (the "Borrower"), the Agent (as defined below) and
the Required Lenders (as defined below).

                             W I T N E S S E T H:

               WHEREAS, pursuant to a Credit Agreement, dated as of January 9,
1997 and as amended and restated as of April 14, 1997 (the "Credit Agreement"),
among the Borrower, the financial institutions as are or may become parties
thereto (collectively, the "Lenders"), and The Bank of Nova Scotia
("Scotiabank"), individually and as agent (the "Agent") for the Lenders, the
Lenders extended Commitments to make Credit Extensions to the Borrower; and

               WHEREAS, in connection with the Credit Agreement, ADT Limited
executed and delivered in favor of the Agent and the Lenders the Guaranty dated
as of January 9, 1997 (as heretofore amended or otherwise modified, the "ADT
Limited Guaranty"); and

               WHEREAS, ADT Limited has established Limited Apache, Inc., a
Massachusetts corporation and direct Wholly-Owned Subsidiary of ADT Limited
("Apache"), in connection with the proposed merger of Apache with and into
Tyco International Ltd., a Massachusetts corporation ("Tyco"), pursuant to,
and in accordance with, the Agreement and Plan of Merger dated as of March 17,
1997, among ADT Limited, Apache and Tyco (the "Merger"); and

               WHEREAS, the Borrower has requested the Required Lenders to
consent and agree that, until September 30, 1997, Apache, Tyco and the
Subsidiaries of Tyco on the date hereof or formed after the date hereof
(Apache, Tyco and such Subsidiaries, collectively, the "Tyco Subsidiaries") be
deemed not to be Subsidiaries of ADT Limited for purposes of the Credit
Agreement (except for the definition of "High Quality Investments" in Section
1.1 thereof, clause (m) of Section 8.2.2 thereof and Sections 9.1.5, 9.1.6,
9.1.7, 9.1.9, 10.5 and 11.4 thereof); and

               WHEREAS, the Borrower has requested related amendments to
Sections 1.1, 9.1.5, 9.1.6 and 9.1.7 of the Credit Agreement; and

               WHEREAS, the Required Lenders are willing to consent to such
requests, subject to the terms and conditions of this Amendment;

               NOW, THEREFORE, for good and valuable consideration the receipt
of which is hereby acknowledged, the parties hereto agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

               Unless otherwise defined or the context otherwise requires,
terms for which meanings are provided in the Credit Agreement shall have such
meanings when used in this Amendment.


                                  ARTICLE II

                            AMENDMENTS AND CONSENT

               SECTION 2.1.  Amendments to the Credit Agreement.  Subject to
the terms and conditions set forth herein and in reliance on the
representations and warranties of the Borrower herein contained, the Credit
Agreement is amended as set forth in this Section 2.1.

               SECTION 2.1.1.  Amendment to Section 1.1.  (a) Section 1.1 of
the Credit Agreement is amended by adding the following terms and definitions
therefor:

               "Material Tyco Party" means each Tyco Subsidiary which

      (a) accounted for at least 10% of the consolidated gross revenues of the
          Tyco Subsidiaries for the most recently completed Fiscal
          Quarter; or

      (b) has assets which represent at least 10% of the consolidated gross
          assets of the Tyco Subsidiaries as of the last day of the
          most recently completed Fiscal Quarter.

               "Tyco" means Tyco International Ltd., a Massachusetts
corporation.

               "Tyco Subsidiary" means Limited Apache, Inc., a Massachusetts
corporation, Tyco and each Subsidiary of Tyco as of June 27, 1997, and each
Subsidiary of Tyco formed thereafter.

               (b) Section 1.1 of the Credit Agreement is further amended by
amending the definition of "Material Related Party" by inserting the phrase
", each Material Tyco Party (prior to September 30, 1997)" after the words
"each Intermediate Parent Company".

               SECTION 2.1.2.  Amendment to Section 5.11.  Section 5.11 of the
Credit Agreement is amended by inserting the parenthetical "(other than Tyco
Subsidiaries)" after the reference therein to "the Borrower".

               SECTION 2.1.3.  Amendment to Section 9.1.5.  Section 9.1.5 of
the Credit Agreement is amended by inserting the parenthetical "(or
$30,000,000 in the case of a Tyco Subsidiary prior to September 30, 1997)"
after the reference therein to "$15,000,000".

               SECTION 2.1.4. Amendment to Section 9.1.6.  Section 9.1.6 of
the Credit Agreement is amended by inserting the parenthetical "(or
$30,000,000 in the case of a Tyco Subsidiary prior to September 30, 1997)"
after the reference therein to "$15,000,000".

               SECTION 2.1.5.  Amendment to Section 9.1.7.  Section 9.1.7 of
the Credit Agreement is amended by inserting the parenthetical "(or
$30,000,000 in the case of a Tyco Subsidiary prior to September 30, 1997)"
after the reference therein to "$15,000,000".

               SECTION 2.2.  Consent.  Subject to the terms and conditions set
forth herein and in reliance on the representations and warranties of the
Borrower herein contained, the Required Lenders consent and agree that, until
September 30, 1997, except for purposes of the definition of "High Quality
Investments" in Section 1.1 of the Credit Agreement, clause (m) of Section
8.2.2 of the Credit Agreement and Sections 9.1.5, 9.1.6, 9.1.7, 9.1.9, 10.5
and 11.4 of the Credit Agreement, the Tyco Subsidiaries shall be deemed not to
be Subsidiaries of ADT Limited or members of the Borrower's Controlled Group
for any purpose under the Credit Agreement.  This consent shall be limited
precisely as written and in no event shall be deemed to constitute a waiver of
compliance by the Borrower with respect to any other term, provision or
condition of the Credit Agreement or any other Loan Document or prejudice any
right or remedy that the Agent or any Lender may now have or may have in the
future under or in connection with the Credit Agreement, any other Loan
Document or any other instrument or agreement referred to therein.


                                  ARTICLE III

                             CONDITIONS PRECEDENT

               This Amendment shall become effective, as of the date hereof,
upon the receipt by the Agent of counterparts hereof executed on behalf of the
Borrower and the Required Lenders.


                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

               In order to induce the Required Lenders and the Agent to enter
into this Amendment, the Borrower hereby reaffirms, as of the date hereof, the
representations and warranties contained in Article VII of the Credit Agreement
and additionally represents and warrants unto each Lender and each Agent that
no Default has occurred and is continuing.


                                   ARTICLE V

                           MISCELLANEOUS PROVISIONS

               SECTION 5.1.  Ratification of and References to the Credit
Agreement.  This Amendment shall be deemed to be an amendment to the Credit
Agreement, and the Credit Agreement, as amended hereby, is hereby ratified,
approved and confirmed in each and every respect.  All references to the
Credit Agreement in any other document, instrument, agreement or writing shall
hereafter be deemed to refer to the Credit Agreement as amended hereby.

               SECTION 5.2.  Headings.  The various headings of this Amendment
are inserted for convenience only and shall not affect the meaning or
interpretation of this Amendment or any provisions hereof.

               SECTION 5.3.  Execution in Counterparts.  This Amendment may be
executed by the parties hereto in several counterparts, each of which shall be
deemed to be an original and all of which shall constitute together but one
and the same agreement.

               SECTION 5.4.  Governing Law.  THIS AMENDMENT SHALL BE DEEMED TO
BE A CONTRACT MADE UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE STATE OF NEW
YORK.

               IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed by their respective officers thereunto duly authorized
as of the day and year first above written.


                                         ADT OPERATIONS, INC.



                                         By:  /s/ Jan S. Beck
                                             ---------------------------------
                                             Title:


                                         THE BANK OF NOVA SCOTIA,
                                          as Agent
                                          and as a Lender



                                         By:  /s/ W.J. Brown
                                             ---------------------------------
                                             Title: Vice President


                                         BANK OF MONTREAL



                                         By:  /s/ R.J. McClorey
                                             ---------------------------------
                                             Title: Director


                                         CIBC INC.



                                         By: /s/ William C. Humphries
                                             ---------------------------------
                                             Title: Director, CIBC Wood Gundy
                                                    Securities Corp. as Agent




                                         CREDIT LYONNAIS ATLANTA
                                          AGENCY



                                         By:  /s/ Robert Ivosevich
                                             ---------------------------------
                                             Title: Senior Vice President


                                       CREDIT SUISSE, Individually and as
                                          Co-Agent



                                       By:  /s/ Thomas G. Muoio
                                           ---------------------------------
                                           Title: Vice President



                                       By:  /s/ Steven E. Janauschek
                                           ---------------------------------
                                           Title: Associate



                                       FIRST UNION NATIONAL BANK OF FLORIDA



                                       By:
                                           ---------------------------------
                                           Title:


                                       THE FUJI BANK, LIMITED, NEW YORK BRANCH



                                       By:
                                           ---------------------------------
                                           Title:


                                       MELLON BANK N.A.



                                       By: /s/ Clifford A. Mull
                                           ---------------------------------
                                           Title: Assistant Vice President




                                       MIDLAND BANK PLC, NEW YORK BRANCH



                                       By:  /s/ J.P. Bollington
                                           ---------------------------------
                                           Title: V.P. Multinationals


                                       THE MITSUBISHI TRUST AND BANKING
                                          CORPORATION



                                       By:
                                            ---------------------------------
                                            Title:


                                       NATIONSBANK, N.A.



                                       By: /s/ Kelly C. Cannon
                                           ---------------------------------
                                           Title: Senior Vice President




<PAGE>


                                                                  EXHIBIT 10.6

                    ADT LIMITED GUARANTY WAIVER AND CONSENT

      THIS ADT LIMITED GUARANTY WAIVER AND CONSENT (this "Waiver and
Consent"), dated as of June 27, 1997, between ADT LIMITED, a company organized
under the laws of Bermuda ("ADT Limited"), and the Agent (as defined below).

                             W I T N E S S E T H:

               WHEREAS, pursuant to a Credit Agreement, dated as of January 9,
1997 and as amended and restated as of April 14, 1997 (the "Credit Agreement"),
among ADT Operations, Inc., a company organized under the laws of Delaware
(the "Borrower"), the financial institutions as are or may become parties
thereto (collectively, the "Lenders"), and The Bank of Nova Scotia
("Scotiabank"), individually and as agent (the "Agent") for the Lenders, the
Lenders extend Commitments to make Credit Extensions to the Borrower; and

               WHEREAS, in connection with the Credit Agreement, ADT Limited
executed and delivered in favor of the Agent and the Lenders the Guaranty dated
as of January 9, 1997 (as heretofore amended or otherwise modified, the "ADT
Limited Guaranty"); and

               WHEREAS, ADT Limited has established Limited Apache, Inc., a
Massachusetts corporation and direct Wholly-Owned Subsidiary of ADT Limited
("Apache"), in connection with the proposed merger of Apache with and into
Tyco International Ltd., a Massachusetts corporation ("Tyco"), pursuant to,
and in accordance with, the Agreement and Plan of Merger dated as of March 17,
1997, among ADT Limited, Apache and Tyco (the "Merger"); and

               WHEREAS, concurrent with the Merger, the Borrower intends to
make a tender offer for all of its Senior Notes and Senior Subordinated Notes
while simultaneously soliciting the consent of the holders of the Senior Notes
and Senior Subordinated Notes to amend, among other things, certain covenants
set forth in the Senior Note Indenture and the Senior Subordinated Note
Indenture pursuant to, and in accordance with, the Offer to Purchase and
Solicitation of Consents dated June 4, 1997 (collectively, the "Debt Tender");
and

               WHEREAS, ADT Limited has requested the Required Lenders to
grant a limited waiver and consent with respect to Sections 4.2.5, 4.2.6,
4.2.9, 4.2.11 and 4.2.14 of the ADT Limited Guaranty in order to permit (i)
ADT Limited's equity interest in Apache and Tyco, (ii) the repurchase of the
Senior Notes and the Senior Subordinated Notes by the Borrower, (iii) the
Merger, (iv) the amendments to the Senior Note Indenture and the Senior
Subordinated Note Indenture and (v) a change in its fiscal year to the twelve
consecutive calendar months ending June 30; and

               WHEREAS, ADT Limited has requested the Required Lenders to
consent and agree that, until September 30, 1997, Apache, Tyco and the
Subsidiaries of Tyco on the date hereof or formed after the date hereof
(Apache, Tyco and such Subsidiaries, collectively, the "Tyco Subsidiaries") be
deemed to be neither Subsidiaries nor Affiliates of ADT Limited for purposes
of the provisions set forth in the ADT Limited Guaranty (other than Section
3.10, Section 4.1.1 (as to the payment of taxes) and Section 4.2.12 thereof);

               WHEREAS, the Required Lenders are willing to consent to such
requests, on the terms and subject to the conditions of this Waiver and
Consent;

               NOW, THEREFORE, for good and valuable consideration the receipt
of which is hereby acknowledged, the parties hereto agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

               Unless otherwise defined herein or the context otherwise
requires, terms for which meanings are provided in the ADT Limited Guaranty
(including by reference to the Credit Agreement) shall have such meanings when
used in this Waiver and Consent.


                                  ARTICLE II

                          LIMITED WAIVER AND CONSENT

               On the terms and subject to the conditions set forth herein and
in reliance on the representations and warranties of ADT Limited herein
contained, the Agent and the Required Lenders hereby

      (a) waive the restrictions set forth in

           (i)  Section 4.2.5 of the ADT Limited Guaranty to the extent
                  necessary to permit ADT Limited's equity interest in
                  apache and Tyco,

          (ii)  Sections 4.2.6 and 4.2.11 of the ADT Limited Guaranty to
                  the extent necessary to permit the Debt Tender,

         (iii)  Section 4.2.9 of the ADT Limited Guaranty to the extent
                  necessary to permit the Merger, and

          (iv)  Section 4.2.14 of the ADT Limited Guaranty to the extent
                  necessary to permit ADT Limited and its Subsidiaries to
                  change their Fiscal Year to the twelve consecutive calendar
                  months ending on June 30 (it being acknowledged that
                  reverences to a specified Fiscal Year in the ADT Limited
                  Guaranty, the Credit Agreement or any other Loan Document
                  shall continue to mean the twelve consecutive calendar
                  months ending on December 31 of such specified Fiscal Year);
                  and

      (b) consent and agree that, until September 30, 1997, the Tyco
          Subsidiaries shall be deemed to be neither Subsidiaries nor
          Affiliates of ADT Limited for purposes of the provisions set forth
          in the ADT Limited Guaranty (other than Section 3.10, Section
          4.1.1 (as to payment of taxes) and Section 4.2.12 thereof).

               The foregoing waiver and consent shall be limited precisely as
written and in no event shall be deemed to constitute a waiver of compliance
by ADT Limited with respect to any other term, provision or condition of the
ADT Limited Guaranty or any other Loan Document or prejudice any right or
remedy that the Agent or any Lender may now have or may have in the future
under or in connection with the ADT Limited Guaranty, any other Loan Document
or any other instrument or agreement referred to therein.


                                  ARTICLE III

                             CONDITIONS PRECEDENT

               This Waiver and Consent shall become effective, as of the date
hereof, upon the receipt by the Agent of counterparts hereof executed on
behalf of ADT Limited and the Required Lenders.

                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

               In order to induce the Agent and the Required Lenders to
consent to the terms of this Waiver and Consent, ADT Limited hereby reaffirms,
as of the date hereof, the representations and warranties contained in Article
III of the ADT Limited Guaranty and additionally represents and warrants unto
each Lender and the Agent that, as of the date hereof, no Default has occurred
and is continuing.


                                   ARTICLE V

                           MISCELLANEOUS PROVISIONS

               SECTION 5.1.  Headings.  The various headings of this Waiver and
Consent are inserted for convenience only and shall not affect the meaning or
interpretation of this Waiver and Consent or any provisions hereof.

               SECTION 5.2.  Execution in Counterparts.  This Waiver and
Consent may be executed by the parties hereto in several counterparts, each of
which shall be deemed to be an original and all of which shall constitute
together but one and the same agreement.

               SECTION 5.3.  Acknowledgment of Credit Agreement Amendment and
Consent.  ADT Limited hereby acknowledges the terms of Credit Agreement
Amendment No. 1 and Consent dated as of the date hereof among the Borrower and
the Required Lenders.

               SECTION 5.4.  Governing Law.  THIS WAIVER AND CONSENT SHALL BE
DEEMED TO BE A CONTRACT MADE UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE
STATE OF NEW YORK.

                      [REMAINDER OF THIS PAGE LEFT INTENTIONALLY BLANK]



               IN WITNESS WHEREOF, the parties hereto have caused this Waiver
and Consent to be executed by their respective officers thereunto duly
authorized as of the day and year first above written.


                                       ADT LIMITED, INC.



                                       By:  /s/ Stephen J. Ruzika
                                           -----------------------------
                                            Title:


                                       THE BANK OF NOVA SCOTIA, as Agent



                                       By:  /s/ W.J. Brown
                                           -----------------------------
                                           Title: Vice President

CONSENTED TO BY:

THE BANK OF NOVA SCOTIA,
      as Lender


By:  /s/ W.J. Brown
     -----------------------------------
      Title: Vice President


BANK OF MONTREAL


By:   /s/ R.J. McClorey
     -----------------------------------
      Title: Director


CIBC INC.


By:   /s/ William C. Humphries
     -----------------------------------
      Title: Director, CIBC Wood Gundy
       Securities Corp. as Agent


CREDIT LYONNAIS ATLANTA AGENCY


By:   /s/ Robert Ivosevich
     -----------------------------------
      Title: Senior Vice President


CREDIT SUISSE FIRST BOSTON


By:   /s/ Thomas G. Muoio
     -----------------------------------
      Title: Vice President


By:   /s/ Steven E. Janauschek
     -----------------------------------
      Title: Associate


FIRST UNION NATIONAL BANK
      OF FLORIDA


By:
     -----------------------------------
      Title:


THE FUJI BANK, LIMITED,
      NEW YORK BRANCH


By:
     -----------------------------------
      Title:


MELLON BANK N.A.


By:   /s/ Clifford A. Mull
     -----------------------------------
      Title: Assistant Vice President


MIDLAND BANK PLC, NEW
      YORK BRANCH


By:   /s/ J.P. Bollington
     -----------------------------------
      Title: VP Multinationals


THE MITSUBISHI TRUST AND
      BANKING CORPORATION


By:
     -----------------------------------
      Title:


NATIONSBANK, N.A.



By:   /s/ Kelly C. Cannon
     -----------------------------------
      Title: Senior Vice President


<PAGE>


                                                                 EXHIBIT 10.7

                 ADT LIMITED GUARANTY WAIVER AND CONSENT NO. 2

      THIS ADT LIMITED GUARANTY WAIVER AND CONSENT NO. 2 (this "Waiver and
Consent"), dated as of June 27, 1997, between ADT LIMITED, a company organized
under the laws of Bermuda ("ADT Limited"), and the Agent (as defined below).

                             W I T N E S S E T H:

               WHEREAS, pursuant to a Credit Agreement, dated as of January 9,
1997 and as amended and restated as of April 14, 1997 (as heretofore amended or
otherwise modified, the "Credit Agreement"), among ADT Operations, Inc., a
company organized under the laws of Delaware (the "Borrower"), the financial
institutions as are or may become parties thereto (collectively, the
"Lenders"), and The Bank of Nova Scotia ("Scotiabank"), individually and as
agent (the "Agent") for the Lenders, the Lenders extended Commitments to make
Credit Extensions to the Borrower; and

               WHEREAS, in connection with the Credit Agreement, ADT Limited
executed and delivered in favor of the Agent and the Lenders the Guaranty dated
as of January 9, 1997 (as heretofore amended or otherwise modified, the "ADT
Limited Guaranty"); and

               WHEREAS, ADT Limited has established Limited Apache, Inc., a
Massachusetts corporation and direct Wholly-Owned Subsidiary of ADT Limited
("Apache"), in connection with the proposed merger of Apache with and into
Tyco International Ltd., a Massachusetts corporation ("Tyco"), pursuant to,
and in accordance with, the Agreement and Plan of Merger dated as of March 17,
1997, among ADT Limited, Apache and Tyco (the "Merger"); and

               WHEREAS, substantially concurrent with the Merger, Tyco intends
to enter into a Bridge Credit Agreement, a 364-Day Credit Agreement and a Five-
Year Credit Agreement, in each case with the various lenders signatories
thereto (collectively, the "Tyco Lenders") and Morgan Guaranty Trust Company
of New York, as the agent for such lenders, providing for aggregate
commitments to make credit extensions to Tyco in an aggregate amount not
exceeding $1,750,000,000 (the "Tyco Credit Agreements"); and

               WHEREAS, the Tyco Lenders are requiring that ADT Limited
guaranty the obligations of Tyco and its subsidiaries under the Tyco Credit
Agreements (the "Tyco Guaranty");

               WHEREAS, ADT Limited has requested the Required Lenders to
grant a limited waiver and consent with respect to Sections 4.2.2 and 4.2.4 of
the ADT Limited Guaranty in order to permit ADT Limited to enter into the Tyco
Guaranty;

               WHEREAS, the Required Lenders are willing to consent to such
request, on the terms and subject to the conditions of this Waiver and Consent;

               NOW, THEREFORE, for good and valuable consideration the receipt
of which is hereby acknowledged, the parties hereto agree as follows:


                                   ARTICLE I

                                  DEFINITIONS

               Unless otherwise defined herein or the context otherwise
requires, terms for which meanings are provided in the ADT Limited Guaranty
(including by reference to the Credit Agreement) shall have such meanings when
used in this Waiver and Consent.


                                  ARTICLE II

                          LIMITED WAIVER AND CONSENT

               On the terms and subject to the conditions set forth herein and
in reliance on the representations and warranties of ADT Limited herein
contained, the Agent and the Required Lenders hereby

      (a) waive, until September 30, 1997, the restrictions set forth in
          Section 4.2.2 of the ADT Limited Guaranty to the extent necessary
          to permit ADT Limited to enter into the Tyco Guaranty and consent
          and agree that, until September 30, 1997, that no portion of the
          obligations of ADT Limited under the Tyco Guaranty shall be
          counted for purposes of computing the aggregate amount set forth
          in clause (q) of Section 4.2.2 of the ADT Limited Guaranty; and

      (b) consent and agree that, until September 30, 1997, no portion of the
          obligations of ADT Limited under the Tyco Guaranty shall be
          counted for purposes of computing ADT Limited's Debt to Total
          Capitalization Ratio under Section 4.2.4.

               The foregoing waiver and consent shall be limited precisely as
written and in no event shall be deemed to constitute a waiver of compliance
by ADT Limited with respect to any other term, provision or condition of the
ADT Limited Guaranty or any other Loan Document or prejudice any right or
remedy that the Agent or any Lender may now have or may have in the future
under or in connection with the ADT Limited Guaranty, any other Loan Document
or any other instrument or agreement referred to therein.


                                  ARTICLE III

                             CONDITIONS PRECEDENT

               This Waiver and Consent shall become effective, as of the date
hereof, upon the receipt by the Agent of counterparts hereof executed on
behalf of ADT Limited and the Required Lenders.


                                  ARTICLE IV

                        REPRESENTATIONS AND WARRANTIES

               In order to induce the Agent and the Required Lenders to
consent to the terms of this Waiver and Consent, ADT Limited hereby reaffirms,
as of the date hereof, the representations and warranties contained in Article
III of the ADT Limited Guaranty and additionally represents and warrants unto
each Lender and the Agent that, as of the date hereof, no Default has occurred
and is continuing.


                                   ARTICLE V

                           MISCELLANEOUS PROVISIONS

               SECTION 5.1.  Headings.  The various headings of this Waiver
and Consent are inserted for convenience only and shall not affect the
meaning or interpretation of this Waiver and Consent or any provisions
hereof.

               SECTION 5.2.  Execution in Counterparts.  This Waiver and
Consent may be executed by the parties hereto in several counterparts, each of
which shall be deemed to be an original and all of which shall constitute
together but one and the same agreement.

               SECTION 5.3.  Governing Law.  THIS WAIVER AND CONSENT SHALL BE
DEEMED TO BE A CONTRACT MADE UNDER AND GOVERNED BY THE INTERNAL LAWS OF THE
STATE OF NEW YORK.

               IN WITNESS WHEREOF, the parties hereto have caused this Waiver
and Consent to be executed by their respective officers thereunto duly
authorized as of the day and year first above written.


                                       ADT LIMITED, INC.



                                      By:  /s/ Stephen J. Ruzika
                                         -------------------------------------
                                         Title:


                                       THE BANK OF NOVA SCOTIA, as Agent



                                      By:  /s/ W.J. Brown
                                         -------------------------------------
                                         Title: Vice President

CONSENTED TO BY:

THE BANK OF NOVA SCOTIA,
      as Lender


By:   /s/ W.J. Brown
   -------------------------------------
   Title: Vice President


BANK OF MONTREAL


By:   /s/ R.J. McClorey
   -------------------------------------
   Title: Director


CIBC INC.


By:   /s/ Roger Colden
   -------------------------------------
   Title: Director, CIBC Wood Gundy
    Securities Corp. as Agent


CREDIT LYONNAIS ATLANTA AGENCY


By:   /s/ Robert Ivosevich
   -------------------------------------
   Title: Senior Vice President


CREDIT SUISSE FIRST BOSTON


By:   /s/ Thomas G. Muoio
   -------------------------------------
   Title: Vice President


By:   /s/ Steven E. Janauschek
   -------------------------------------
   Title: Associate


FIRST UNION NATIONAL BANK
      OF FLORIDA


By:
   -------------------------------------
   Title:


THE FUJI BANK, LIMITED,
      NEW YORK BRANCH


By:
   -------------------------------------
   Title:


MELLON BANK N.A.


By:   /s/ Clifford A. Mull
   -------------------------------------
   Title: Assistant Vice President


MIDLAND BANK PLC, NEW
      YORK BRANCH


By:   /s/ J.P. Bollington
   -------------------------------------
   Title: VP Multinationals


THE MITSUBISHI TRUST AND
      BANKING CORPORATION


By:
   -------------------------------------
   Title:


NATIONSBANK, N.A.



By:   /s/ Kathy C. Cannon
   -------------------------------------
   Title: Senior Vice President



<PAGE>

                                                                  EXHIBIT 10.8

               FACILITY AGREEMENT AMENDMENT NO. 1 AND WAIVER

               THIS FACILITY AGREEMENT AMENDMENT NO. 1 AND WAIVER (this
"Amendment"), dated as of 30 June, 1997 between ADT Finance PLC (the
"Borrower"), ADT (UK) Holdings PLC, Modern Security Systems Limited, ADT Group
PLC and Electric Protection Services Limited (each an "Initial Guarantor"),
Automated Security (Holdings) PLC (an "Additional Guarantor") and The Bank of
Nova Scotia (as "Agent")

                           W I T N E S S E T H;

               WHEREAS, pursuant to a Facility Agreement, dated as of 17
March, 1997 (as amended or otherwise modified from time to time, the "Facility
Agreement") between the Borrower, the Initial Guarantors, the Additional
Guarantor, the Agent, The Bank of Nova Scotia (as "Arranger") and the
financial institutions as are parties thereto (collectively the "Banks"), the
Banks made available a Pound Sterling 90,000,000 facility;

               WHEREAS, in connection with the Facility Agreement, ADT Limited
executed and delivered in favour of the Agent and the Banks the guarantee dated
as of 25 March, 1997 (as amended or otherwise modified from time to time, the
"ADT Limited Guarantee");

               WHEREAS, ADT Limited has established Limited Apache, Inc., a
Massachusetts corporation and direct Wholly-Owned Subsidiary of ADT Limited
("Apache"), in connection with the proposed merger of Apache with and into
Tyco International Ltd., a Massachusetts corporation ("Tyco"), pursuant to,
and in accordance with, the Agreement and Plan of Merger dated as of 17 March,
1997, among ADT Limited, Apache and Tyco (the "Merger");

               WHEREAS, the Borrower has requested a temporary waiver of the
Event of Default which would otherwise arise under Clause 19.15 of the Facility
Agreement and the Borrower has agreed that, unless otherwise agreed by an
Instructing Group, an Event of Default will arise on 30 September 1997 by
reason of the Merger; and

               WHEREAS, the Instructing Group has confirmed to the Agent its
consent to such requests, subject to the terms and conditions of this
Amendment;

               NOW, THEREFORE, for good and valuable consideration the receipt
of which is hereby acknowledged, the parties hereto agree as follows:

                                 ARTICLE 1

                                DEFINITIONS

               Unless otherwise defined or the context otherwise requires,
terms for which meanings are provided in the Facility Agreement shall have
such meanings when used in this Amendment.

                                ARTICLE II

                          AMENDMENTS AND CONSENT

               SECTION 2.1  Amendments to the Credit Agreement.  Subject to the
terms and conditions set forth herein and in reliance on the representations
and warranties of the Borrower herein contained, the Facility Agreement is
amended as set forth in this Section 2.1.

               SECTION 2.1.1  Amendment to Clause 1.1

               (a) CLAUSE 1.1 of the Facility Agreement is amended by adding
                  the following terms and definitions:

      "Material Tyco Party" means each Tyco Subsidiary which

      (a) accounted for at least 10% of the consolidated gross
          revenues of the Tyco Subsidiaries for the most recently
          completed Financial Quarter: or

      (b) has assets which represent at least 10% of the
          consolidated gross assets of the Tyco Subsidiaries as
          of the last day of the most recently completed
          Financial Quarter.

          "Tyco" means Tyco International, Ltd., a Massachusetts
          corporation.

          "Tyco Subsidiary" means Limited Apache. Inc., a Massachusetts
          corporation, Tyco and each Subsidiary of Tyco as of 30 June
          1997, and each Subsidiary of Tyco formed thereafter.

               SECTION 2.1.2  Amendment to Clause 19.6.  Clause 19.6 of the
Facility Agreement is amended by replacing the phrase " Pound
Sterling10,000,000 (or its equivalent in any other currency)" in each of the
three places it appears with the phrase " Pound Sterling10,000,000 or, in the
case of a Tyco Subsidiary prior to 30 September 1997, $30,000,000 (or, in each
case, its equivalent in any other currency)".

               SECTION 2.1.3  Amendment to Clause 19.10.  Clause 19.10 of the
Facility Agreement is amended by inserting the parenthetical "(or "$30,000,000
in the case of a Tyco Subsidiary prior to September 30, 1997)" after the
reference therein to " Pound Sterling10,000,000".

               SECTION 2.2  Waiver.  Subject to the terms and conditions set
forth herein and in reliance on the representations and warranties of the
Borrower herein contained, the Agent on behalf of the Instructing Group waives
until 30 September 1997 the Event of Default which would otherwise arise under
Clause 19.15 of the Facility Agreement by reason of the Merger and the
Borrower and the Group Guarantors agree that, unless otherwise agreed in
writing by the Agent on behalf of an Instructing Group, an Event of Default
will arise on 30 September 1997 by reason of the Merger.

               This waiver shall be limited precisely as written and in no
event shall be deemed to constitute a waiver of compliance by the Borrower
with respect to any other term, provision or condition of the Facility
Agreement or any other Finance Document or prejudice any right or remedy that
the Agent or any Bank may now have or may have in the future under or in
connection with the Facility Agreement, any other Finance Document or any
other instrument or agreement referred to therein

                                ARTICLE III

                           CONDITIONS PRECEDENT

               This Agreement shall become effective, as of the date hereof,
upon the receipt by the Agent of counterparts hereto executed on behalf of the
Borrower and the Group Guarantors.

                                ARTICLE IV

                      REPRESENTATIONS AND WARRANTIES

               In order to induce the Agent on behalf of the Instructing Group
to enter into this Amendment, the Borrower hereby reaffirms, as of the date
hereof, the representations and warranties contained in Clause 15 (other than
Clause 15.7, 15.10, 15.11 and 15.12) of the Facility Agreement and
additionally represents and warrants to the Agent for the helmet of each of
the Banks that no Event of Default or Potential Event of Default has occurred
and is continuing other than as contemplated herein in relation to the Merger.

                                 ARTICLE V

                         MISCELLANEOUS PROVISIONS

               SECTION 5.1  Ratification of and References to the Facility
Agreement. This Amendment shall be deemed to be an amendment to the Facility
Agreement, and the Facility Agreement, as amended hereby, is hereby ratified,
approved and confirmed in each and every respect.  All references to the
Facility Agreement in any other document, instrument, agreement or writing
shall hereafter be deemed to refer to the Facility Agreement as amended hereby.

               SECTION 5.2  Headings.  The various headings of this Amendment
are inserted for convenience only and shall not affect the meaning or
interpretation of this Amendment or any provisions hereof.

               SECTION 5.3  Execution in Counterparts.  This Amendment may be
executed by the parties hereto in several counterparts, each of which shall be
deemed to be an original and all of which shall constitute together but one
and the same agreement.

               SECTION 5.4  Finance Document.  This Amendment shall be deemed
to be a Finance Document.

               SECTION 5.5  ADT Limited Guarantee.  Each of the Borrower and
each Group Guarantor hereby consents to and acknowledges the provisions of the
ADT Limited Guarantee and Waiver Consent to be entered into between ADT Limited
and the Agent.

               SECTION 5.6  Governing Law.  This Amendment shall be governed by
and construed in accordance with English law.

               IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be executed by their respective officers thereunto duly authorised
as of the day and year first above written.

                                        ADT FINANCE PLC



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        ADT (UK) HOLDINGS PLC



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        MODERN SECURITY SYSTEMS LIMITED



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        ADT GROUP PLC



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        ELECTRIC PROTECTION SERVICES
                                           LIMITED



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        AUTOMATED SECURITY (HOLDINGS)
                                           PLC



                                        By T.W. Godfray
                                           --------------------------------
                                           Title: Director


                                        THE BANK OF NOVA SCOTIA
                                           as Agent and on behalf of the
                                           Instructing Group



                                        By  J.R. Heeds
                                            --------------------------------
                                            Title: Vice President


<PAGE>

                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

Exhibit No. 11.1

Computation of Earnings (Loss) per Common Share

Six months ended June 30                                    1997        1996
                                                             $m          $m

Net income (loss)                                           56.9      (676.1)
Dividends on convertible redeemable preference shares          -        (0.2)
                                                            ----       -----
Adjusted net income (loss) available to common
   shareholders-primary earnings per common share           56.9      (676.3)
                                                            ----       -----
Liquid Yield Option Notes discount amortization (net of
   income taxes of $3.7 million)                             6.9           -
                                                            ----       -----
Adjusted net income available to common shareholders -
   fully diluted earnings per common share                  63.8           -
                                                            ====       =====

Six months ended June 30                                 1997        1996
                                                        Number      Number

Weighted average number of common shares
   in issue                                          147,138,171 136,451,264
Weighted average number of common stock
   equivalents in issue resulting from:
   - Executive share option schemes                    8,079,836           -
   - Republic warrant                                    760,922           -
                                                     ----------- -----------
Weighted average number of common shares
   in issue as used in the computation of
   primary earnings (loss) per common share          155,978,929 136,451,264
Executive share option schemes                         1,639,185           -
Republic warrant                                         958,787           -
Assumed exchange of Liquid Yield Option Notes         21,888,899           -
                                                     ----------- -----------
Weighted average number of common shares
   in issue as used in the computation of
   fully diluted earnings per common share           180,465,800           -
                                                     =========== ===========

Six months ended June 30                                    1997        1996
                                                              $           $

Primary earnings (loss) per common share                    0.36       (4.96)
                                                            ====        ====
Fully diluted earnings per common share                     0.35           -
                                                            ====        ====
Notes

(i)     A certain number of common stock equivalents resulting from executive
        share option schemes are anti-dilutive in the calculation of primary
        and fully diluted earnings (loss) per common share in 1997 and 1996.

(ii)    The effect on fully diluted earnings per common share resulting from
        the assumed exchange of Liquid Yield Option Notes is anti-dilutive in
        1996.  The effect on fully diluted earnings per common share resulting
        from the assumed conversion of convertible capital bonds and
        convertible redeemable preference shares is anti-dilutive in 1996.




                                  ADT LIMITED
                     (since renamed TYCO INTERNATIONAL LTD.)

Exhibit No. 11.1

Computation of Earnings per Common Share

Three months ended June 30                                  1997        1996
                                                             $m          $m

Net income                                                  21.9        29.5
Dividends on convertible redeemable preference shares          -        (0.1)
                                                            ----        ----
Adjusted net income available to common shareholders -
   primary earnings per common share                        21.9        29.4
                                                            ----        ----
Liquid Yield Option Notes discount amortization (net of
    income taxes of $1.7 million)                              -         3.3
                                                            ----        ----
Adjusted net income available to common shareholders -
   fully diluted earnings per common share                  21.9        32.7
                                                            ====        ====

Three months ended June 30                               1997        1996
                                                        Number      Number

Weighted average number of common shares in issue    153,939,668 137,061,947
Weighted average number of common stock
   equivalents in issue resulting from:
   - Executive share option schemes                    8,857,594   5,169,311
                                                     ----------- -----------
Weighted average number of common shares in
   issue as used in the computation of primary
   earnings per common share                         162,797,262 142,231,258
Executive share option schemes                         1,017,929     550,552
Assumed exchange of Liquid Yield Option Notes                  -  21,913,538
                                                     ----------- -----------
Weighted average number of common shares in
   issue as used in the computation of fully
   diluted earnings per common share                 163,815,191 164,695,348
                                                     =========== ===========

Three months ended June 30                                  1997        1996
                                                              $           $

Primary earnings per common share                           0.13        0.21
                                                            ====        ====
Fully diluted earnings per common share                     0.13        0.20
                                                            ====        ====

Notes

(i)     A certain number of common stock equivalents resulting from executive
        share option schemes are anti-dilutive in the calculation of primary
        and fully diluted earnings per common share in 1997 and 1996.

(ii)    The effect on fully diluted earnings per common share resulting from
        the assumed exchange of Liquid Yield Option Notes is anti-dilutive in
        1997.  The effect on fully diluted earnings per common share resulting
        from the assumed conversion of convertible capital bonds and
        convertible redeemable preference shares is anti-dilutive in 1996.

<TABLE> <S> <C>

<ARTICLE>        5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET AT JUNE 30, 1997 (UNAUDITED)  AND THE
CONSOLIDATED STATEMENT OF INCOME FOR THE SIX MONTHS ENDED JUNE 30, 1997
(UNAUDITED)  AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS.
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               JUN-30-1997
<CASH>                                         482,100
<SECURITIES>                                         0
<RECEIVABLES>                                  283,200
<ALLOWANCES>                                         0
<INVENTORY>                                     47,400
<CURRENT-ASSETS>                               880,200
<PP&E>                                       1,572,300
<DEPRECIATION>                                       0
<TOTAL-ASSETS>                               3,123,200
<CURRENT-LIABILITIES>                          652,000
<BONDS>                                      1,065,800
                                0
                                          0
<COMMON>                                        15,800
<OTHER-SE>                                   1,104,500
<TOTAL-LIABILITY-AND-EQUITY>                 3,123,200
<SALES>                                              0
<TOTAL-REVENUES>                               923,900
<CGS>                                                0
<TOTAL-COSTS>                                  470,400
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              43,100
<INCOME-PRETAX>                                 84,300
<INCOME-TAX>                                    27,400
<INCOME-CONTINUING>                             56,900
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    56,900
<EPS-PRIMARY>                                     0.36
<EPS-DILUTED>                                     0.35
        

</TABLE>


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