VICON INDUSTRIES INC /NY/
10-Q, 1998-08-13
COMMUNICATIONS EQUIPMENT, NEC
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                              SECURITIES AND EXCHANGE COMMISSION

                                   WASHINGTON, D.C.   20549

                                           FORM 10-Q


QUARTERLY REPORT UNDER SECTION 13 or 15(d) OF THE SECURITIES EXCHANGE 
                            ACT OF 1934



For Quarter Ended  June 30, 1998             Commission File No.  1-7939
                  -------------------------                      -------




                     VICON INDUSTRIES, INC.
               (Exact name of registrant as specified in its charter)


      NEW YORK STATE                                           11-2160665
(State or other jurisdiction of                         (I.R.S. Employer
 incorporation or organization)                          identification No.)



            89 Arkay Drive, Hauppauge, New York                  11788
            (Address of principal executive offices)               (Zip Code)



Registrant's telephone number, including area code: (516) 952-2288



 (Former name, address, and fiscal year, if changed since last report)



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 June 30, 1998,  the  registrant had  outstanding  4,456,383  shares of Common
Stock, $.01 par value.








<PAGE>




                                PART I - FINANCIAL INFORMATION

                            VICON INDUSTRIES, INC. AND SUBSIDIARIES

                       (CONDENSED) CONSOLIDATED STATEMENTS OF OPERATIONS

                                          (UNAUDITED)


                                                 Three Months Ended

                                            6/30/98                6/30/97

Net sales.............................    $16,106,001            $13,725,759
Cost of sales.........................     10,655,224              9,815,328
                                          -----------            -----------

  Gross profit........................      5,450,777              3,910,431

Operating expenses:
    General and administrative expense      1,194,222                997,476
    Selling expense...................      2,376,629              2,050,980
                                           ----------             ----------
                                            3,570,851              3,048,456
                                           ----------             ----------

  Operating income....................      1,879,926                861,975

Interest expense, net.................        230,449                309,274
Other income..........................          -                     (6,273)
                                          -----------            ------------

    Income before income taxes........      1,649,477                558,974
Income tax expense....................         75,000                 16,000
                                          -----------           ------------
    Net income........................    $ 1,574,477            $   542,974
                                          ===========           ============



Earnings per share:

            Basic                         $   .40                $   .19
                                              ===                    ===

            Diluted                       $   .38                $   .18
                                              ===                    ===

Shares used in computing 
 earnings per share:

            Basic                          3,900,699              2,802,728

            Diluted                        4,162,632              3,049,335




See Notes to (Condensed) Consolidated Financial Statements.









                                        -2-





<PAGE>



                            VICON INDUSTRIES, INC. AND SUBSIDIARIES

                       (CONDENSED) CONSOLIDATED STATEMENTS OF OPERATIONS

                                          (UNAUDITED)


                                                  Nine Months Ended

                                            6/30/98                6/30/97
                                           --------               --------
Net sales.............................    $45,711,106            $37,351,404
Cost of sales.........................     30,805,651             26,867,870
                                          -----------            -----------

  Gross profit........................     14,905,455             10,483,534

Operating expenses:
    General and administrative expense      3,241,103              2,661,844
    Selling expense...................      6,777,591              5,807,037
    Relocation expense................          -                    225,129
                                           ----------             ----------
                                           10,018,694              8,694,010
                                           ----------             ----------

  Operating income....................      4,886,761              1,789,524

Interest expense, net.................        924,279                834,207
Other income..........................          -                    (39,896)
                                          -----------           ------------

    Income before income taxes........      3,962,482                995,213
Income tax expense....................        225,000                 71,000
                                          -----------           ------------
    Net income........................    $ 3,737,482            $   924,213
                                          ===========           ============



Earnings per share:

            Basic                         $  1.13                $   .33
                                             ====                    ===

            Diluted                       $  1.04                $   .31
                                             ====                    ===

Shares used in computing 
 earnings per share:

            Basic                          3,315,510              2,794,168

            Diluted                        3,596,902              2,950,071




See Notes to (Condensed) Consolidated Financial Statements.











                                             -3-




<PAGE>



                               VICON INDUSTRIES, INC. AND SUBSIDIARIES
                               (CONDENSED) CONSOLIDATED BALANCE SHEETS
                                             (UNAUDITED)


ASSETS                                                6/30/98       9/30/97
- ------                                               --------      --------

CURRENT ASSETS
Cash............................................  $  3,028,170  $    287,580
Accounts receivable (less allowance
  of $644,000 at June 30, 1998 and
  $493,000 at September 30, 1997)...............    12,185,540     9,578,297
Inventories:
  Parts, components, and materials..............     2,677,978     3,399,133
  Work-in-process...............................     2,672,535     2,046,174
  Finished products.............................    11,670,631    11,188,217
                                                   -----------   -----------
                                                    17,021,144    16,633,524
Prepaid expenses................................       285,911       307,580
                                                   -----------   -----------
TOTAL CURRENT ASSETS............................    32,520,765    26,806,981
- --------------------

Property, plant and equipment...................    12,396,263     8,362,930
Less accumulated depreciation and amortization..    (5,421,587)   (4,870,717)
                                                   -----------   -----------
                                                     6,974,676     3,492,213
Other assets....................................       778,321       900,417
                                                   -----------   -----------

TOTAL ASSETS....................................   $40,273,762   $31,199,611
- ------------                                       ===========   ===========


LIABILITIES AND SHAREHOLDERS' EQUITY
- ------------------------------------
CURRENT LIABILITIES
Borrowings under U.K. revolving credit agreement         -           169,006
Current maturities of long-term debt............       273,971       515,092
Accounts payable:
  Related party.................................     5,300,404     7,146,985
  Other.........................................     2,438,505     1,407,917
Accrued wages and expenses......................     2,404,171     2,111,670
Income taxes payable............................       242,906       105,188
                                                    ----------    ----------
TOTAL CURRENT LIABILITIES                           10,659,957    11,455,858
- -------------------------

Long-term debt:
  Related party.................................         -         1,440,000
  Banks and other...............................     3,536,493     6,904,368

Other long-term liabilities.....................       467,545       485,402

SHAREHOLDERS' EQUITY
Common stock, par value $.01....................        45,166        30,470
Capital in excess of par value..................    20,858,629     9,868,063
Retained earnings...............................     5,018,389     1,280,907
                                                  ------------   -----------
                                                    25,922,184    11,179,440
Less treasury stock 60,202 shares and
  45,952 shares at cost.........................      (391,312)     (298,686)
Foreign currency translation adjustment.........        78,895        33,229
                                                  ------------   -----------
TOTAL SHAREHOLDERS' EQUITY                          25,609,767    10,913,983
- --------------------------                        ------------   -----------

TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY......  $ 40,273,762   $31,199,611
- ------------------------------------------        ============   ===========

See Notes to (Condensed) Consolidated Financial Statements.


                                             -4-



<PAGE>



                               VICON INDUSTRIES, INC. AND SUBSIDIARIES
                          (CONDENSED) CONSOLIDATED STATEMENTS OF CASH FLOWS
                                             (UNAUDITED)




                                                          Nine Months Ended

                                                       6/30/98        6/30/97
Cash flows from operating activities:                 --------       --------
  Net income.....................................   $3,737,482   $    924,213
  Adjustments to reconcile net income to net cash
  provided by (used in) operating activities:
    Depreciation and amortization................      568,129        587,666
    Amortization of gain on sale and leaseback...         -          (433,993)
    Unrealized foreign exchange gain.............         -           (39,896)
    Change in assets and liabilities:
      Accounts receivable........................   (2,558,375)      (857,330)
      Inventories................................     (333,730)    (3,534,235)
      Prepaid expenses...........................       23,576        162,986
      Other assets...............................      122,096        (48,789)
      Accounts payable...........................      989,321        130,184
      Accrued wages and expenses.................      284,730        708,692
      Income taxes payable.......................      135,518          4,020
      Other liabilities..........................      (17,857)       (46,682)
                                                   ------------   ------------
       Net cash provided by (used in)
          operating activities...................    2,950,890     (2,443,164)
                                                   ------------   ------------

Cash flows from investing activities:
    Capital expenditures, net of
      minor disposals............................   (4,005,944)      (771,553)
                                                   ------------   ------------
        Net cash used in investing activities....   (4,005,944)      (771,553)
                                                   ------------   ------------

Cashflows from financing  activities:  
   (Decrease) increase in borrowings under U.S.
      bank credit agreement......................   (6,003,416)     2,065,139
    Decrease in borrowings under U.K.
      revolving credit agreement.................     (172,136)      (226,766)
    Net proceeds from sale of common stock.......   10,800,916          -
    Proceeds from U.S. mortgage and term loans...    2,900,000          -
    Proceeds from U.K. term loan.................        -            830,000
    (Decrease) increase in interest-bearing
      accounts payable to related party..........   (1,812,228)       992,258
    Repayment of promissory note to related party   (1,800,000)      (200,000)
    Proceeds from exercise of stock options......      111,720          -
    Repayment of U.K. mortgage...................        -           (353,112)
    Repayments of other debt.....................     (168,789)       (79,912)
                                                   ------------   ------------

      Net cash provided by financing activities..    3,856,067      3,027,607
                                                   ------------   -----------
Effect of exchange rate changes on cash..........      (60,423)        86,458
                                                   ------------   -----------

Net increase (decrease) in cash..................    2,740,590       (100,652)
Cash at beginning of year........................      287,580        205,876
                                                   ------------   -----------
Cash at end of period............................  $ 3,028,170    $   105,224
                                                   ============   ===========




See Notes to (Condensed) Consolidated Financial Statements.



                                             -5-


<PAGE>



                           VICON INDUSTRIES, INC. AND SUBSIDIARIES
           NOTES TO (CONDENSED) CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)
                                            June 30, 1998


Note 1:  Basis of Presentation
- ------------------------------
The accompanying  unaudited (condensed)  consolidated  financial statements have
been prepared in accordance with generally  accepted  accounting  principles for
interim  financial  information and the instructions to Form 10-Q and Rule 10-01
of Regulation  S-X.  Accordingly,  they do not include all the  information  and
footnotes  required by generally  accepted  accounting  principles  for complete
financial statements. In the opinion of management,  all adjustments (consisting
of normal recurring accruals)  considered necessary for a fair presentation have
been  included.  Operating  results for the three and nine months ended June 30,
1998 are not necessarily  indicative of the results that may be expected for the
fiscal year ended  September  30, 1998.  For further  information,  refer to the
consolidated   financial  statements  and  footnotes  thereto  included  in  the
Company's  annual  report on Form 10-K for the fiscal year ended  September  30,
1997.

Note 2:  Earnings per Share
- ---------------------------
In February 1997, the Financial  Accounting  Standards Board issued Statement of
Financial  Accounting  Standards  (SFAS) No.  128,  "Earnings  per Share"  which
requires companies to present basic and diluted earnings per share (EPS) instead
of primary and fully  diluted EPS that was  previously  required.  Basic EPS are
computed  based on the weighted  average  number of shares  outstanding  for the
period.  Diluted EPS reflect the maximum  dilution that would have resulted from
the exercise of stock options and  incremental  shares issuable under a deferred
compensation agreement. The new standard was initially adopted by the Company in
the quarter ended December 31, 1997. All EPS figures for prior periods  reported
have been restated. The following table provides the components of the basic and
diluted earnings per share (EPS) computations:

                                 For the Three Months       For the Nine Months
                                    Ended June 30,             Ended June 30,
                                   1998         1997        1998           1997
                                      (Unaudited)               (Unaudited)

Basic EPS Computation
Net income..................... $1,574,477  $  542,974   $3,737,482   $  924,213

Weighted average
 shares outstanding............  3,900,699   2,802,728    3,315,510    2,794,168

Basic earnings per share....... $      .40  $      .19   $     1.13   $      .33
                                ==========  ==========   ==========   ==========


Diluted EPS Computation
Net income..................... $1,574,477  $  542,974   $3,737,482   $  924,213

Weighted average
 shares outstanding............  3,900,699   2,802,728    3,315,510    2,794,168
Stock options..................    251,401     246,607      273,597      155,903
Stock compensation
 arrangement...................     10,532       -            7,795        -
                                 ---------  ----------   ----------   ----------
Diluted shares outstanding.....  4,162,632   3,049,335    3,596,902    2,950,071

Diluted earnings per share..... $      .38  $      .18   $     1.04   $      .31
                                ==========  ==========   ==========   ==========





                                            -6-


<PAGE>




Note 3:  Common Stock Offering
- ------------------------------
In May 1998, the Company sold an additional 1,371,200 shares of its Common Stock
in a public  offering,  the net  proceeds  of  which  were  approximately  $10.8
million.  The proceeds were  principally used to repay borrowings under the U.S.
bank credit agreement,  the related party term loan and certain interest-bearing
accounts payable.

Note 4:  Subsequent Event
- -------------------------
In July 1998, the Company entered into a $14 million unsecured  revolving credit
and term loan agreement with a new bank. Such agreement  includes a $7.5 million
revolving credit facility which expires in July 2002, with an option to increase
the facility to $9.5 million at any time through July 2000. Borrowings under the
facility  bear  interest at the bank's prime rate minus 2% or, at the  Company's
option, LIBOR plus 90 basis points (6.50% and 6.56%,  respectively,  at July 20,
1998).  The  agreement  also  provides  for a $4.5  million  five year term loan
payable in equal monthly  installments through July 2003, with interest at LIBOR
plus 1%.  The  proceeds  of the term loan  were  used to repay  interest-bearing
accounts payable to a related party.

The agreement contains restrictive covenants which, among other things,  require
the Company to maintain  certain  levels of earnings  and ratios of debt service
coverage and debt to tangible net worth.









































                                       -7-


<PAGE>





                             MANAGEMENT'S DISCUSSION AND ANALYSIS


Results of Operations
Three Months Ended June 30, 1998 Compared with June 30, 1997
- ------------------------------------------------------------

Net sales for the quarter ended June 30, 1998  increased  $2.4 million or 17% to
$16.1  million  compared  with $13.7  million in the year ago period.  The sales
growth was  experienced in the U.S. as domestic sales  increased $2.6 million or
28% to $11.7 million  principally  as a result of system sales  supplied under a
contract with the U.S. Postal Service  entered into in July 1997.  International
sales declined $196,000 or 4% to $4.4 million due to lower sales in Asia.

Gross profit  margins for the third quarter of 1998  increased to 33.8% compared
with 28.5% in the year ago period.  The margin  improvement  was  primarily  the
result of a better sales mix of higher margin products,  lower procurement costs
for certain video products and greater fixed cost absorption associated with the
sales growth.

Operating  expenses for the third  quarter of 1998 were $3.6 million or 22.2% of
net  sales  compared  with  $3.0  million  or 22.2% of net sales in the year ago
period.  The  increase was  principally  the result of higher  selling  expenses
associated with the sales growth and profit related bonus accruals.

Operating  income rose to $1.9  million for the third  quarter of 1998  compared
with  $862,000  in the year ago period as a result of  increased  sales,  higher
gross margins and greater absorption of fixed operating expenses.

Interest expense  decreased $79,000 to $230,000 for the third quarter of 1998 as
$9.0  million  of  interest-bearing  debt was  repaid  in May 1998  with the net
proceeds from a public stock offering.

Income tax  expense  was $75,000  for the third  quarter of 1998  compared  with
$16,000 in the year ago  period.  In both  periods,  the  Company  utilized  net
operating loss ("NOL")  carryforwards to substantially  offset federal and state
taxable  income.   The  nominal  tax  provision  related  primarily  to  foreign
subsidiary income.

As a result of the foregoing, net income increased to $1.6 million for the third
quarter of 1998 compared with net income of $543,000 for the year ago period.




















                                       -8-



<PAGE>



                MANAGEMENT'S DISCUSSION AND ANALYSIS


Results of Operations
Nine Months Ended June 30, 1998 Compared with June 30, 1997
- -----------------------------------------------------------

Net sales for the nine months ended June 30, 1998  increased $8.3 million or 22%
to $45.7 million  compared with $37.4 million in the year ago period.  The sales
growth was experienced  principally in the U.S. as domestic sales increased $7.7
million or 33% to $31.2 million principally as a result of system sales supplied
under a contract  with the U.S.  Postal  Service  entered  into in July 1997 and
sales from a new line of dome cameras introduced in February 1997. International
sales increased $637,000 or 5% to $14.5 million. The increase was due to greater
system  sales and sales to a private  label  customer  in Europe.  International
growth was limited as a result of lower  sales in Asia.  The backlog of unfilled
orders was $11.4 million at June 30, 1998 compared with $4.4 million at June 30,
1997.

Gross  profit  margins  for the first  nine  months of 1998  increased  to 32.6%
compared with 28.1% in the year ago period. The margin improvement was primarily
the result of a better sales mix of higher margin  products,  lower  procurement
costs and greater fixed cost absorption associated with the sales growth.

Operating expenses for the first nine months of 1998 were $10.0 million or 21.9%
of net sales  compared  with $8.5  million or 22.7% of net sales in the year ago
period, exclusive of relocation expense. The increase was principally the result
of higher selling  expenses  associated with the sales growth and profit related
bonus accruals.

Operating income rose to $4.9 million for the first nine months of 1998 compared
with $1.8 million in the year ago period as a result of increased sales,  higher
gross margins and greater absorption of fixed operating expenses.

Interest expense increased $90,000 to $924,000 principally as a result of higher
borrowing levels during the first six months of 1998.

Income tax expense was $225,000 for the first nine months of 1998  compared with
$71,000 in the year ago  period.  In both  periods,  the  Company  utilized  NOL
carryforwards  to substantially  offset federal and state taxable income.  As of
June 30,  1998,  the  remaining  NOL was  approximately  $.5 million for federal
income tax  purposes.  The nominal tax  provision  relates  primarily to foreign
subsidiary income.

As a result of the foregoing, net income increased to $3.7 million for the first
nine  months  of 1998  compared  with net  income of  $924,000  for the year ago
period.

















                                       -9-


<PAGE>



                   MANAGEMENT'S DISCUSSION AND ANALYSIS

LIQUIDITY AND FINANCIAL CONDITION
- ---------------------------------
Net cash  provided by operating  activities  was $3.0 million for the first nine
months of 1998 due  primarily  to the $3.7  million net income  reported for the
period and an  increase in  accounts  payable,  offset in part by an increase in
accounts  receivable  due to higher sales  activity.  Net cash used in investing
activities was $4.0 million for the first nine months of 1998 as a result of the
Company's  purchase of its  principal  operating  facility  for $3.3 million and
capital  expenditures  for tooling and office  equipment.  Net cash  provided by
financing  activities  was $3.9  million,  which  includes  $10.8 million of net
proceeds  received from a public stock  offering in May 1998 and $2.9 million of
proceeds  from  mortgage  loans used to finance  the  facility  purchase.  These
inflows were partially  offset by a $6.0 million  reduction of borrowings  under
the U.S. Bank Credit Agreement and the repayment of a $1.8 million term loan and
$1.8  million of  interest-bearing  accounts  payable to a related  party.  As a
result of the foregoing, the net increase in cash was $2.7 million for the first
nine months of 1998 after the nominal  effect of  exchange  rate  changes on the
cash position of the Company.

The Company  maintains a bank  overdraft  facility  of 600,000  Pounds  Sterling
(approximately  $1,002,000)  in  the  U.K.  to  support  local  working  capital
requirements  of  Vicon  U.K.  At June  30,  1998,  there  were  no  outstanding
borrowings under this facility.

In July 1998, the Company entered into a $14 million unsecured  revolving credit
and term loan agreement with a new bank. Such agreement  includes a $7.5 million
revolving credit facility which expires in July 2002, with an option to increase
the facility to $9.5 million at any time through July 2000. Borrowings under the
facility  bear  interest at the bank's prime rate minus 2% or, at the  Company's
option, LIBOR plus 90 basis points (6.50% and 6.56%,  respectively,  at July 20,
1998).  The  agreement  also  provides  for a $4.5  million  five year term loan
payable in equal monthly  installments through July 2003, with interest at LIBOR
plus 1%. The  proceeds of the term loan were used to repay all  interest-bearing
accounts  payable  to  a  related  party.  The  agreement  contains  restrictive
covenants  which,  among other things,  require the Company to maintain  certain
levels of earnings and ratios of debt service  coverage and debt to tangible net
worth.

The Company  believes that cash flow from  operations and funds  available under
its credit  agreements  will be  sufficient to meet its  anticipated  operating,
capital  expenditures and debt service requirements for at least the next twelve
months.

Year 2000
- ---------
The Company's  software-based products have been tested for year 2000 compliance
and the Company  believes  that such  products  are year 2000  compatible.  With
respect to its own computer operating systems,  the Company is in the process of
upgrading its principal operating computer software to the most recent available
revisions sold by its software  suppliers,  which the suppliers have represented
to be year 2000 compliant. The Company believes that such upgrades will identify
and solve those year 2000 problems that could affect its operating  software and
can be  accomplished  before the year 2000 at a reasonable  cost. It is possible
that certain computer systems or software products of the Company's customers or
suppliers  may  experience  year  2000  problems  and that such  problems  could
adversely  affect the Company.  The Company is in the process of  assessing  the
status of its  principal  suppliers'  year  2000  readiness  and their  plans to
address  problems that their computer  systems may face in correctly  processing
date  information  as the year 2000  approaches.  However,  since  the  ultimate
success of the Company's  customers and suppliers to become compliant is largely
outside of the Company's  control,  no  assurances  can be made that the Company
will be unaffected by the year 2000.

                                      -10-


<PAGE>




"Safe Harbor" Statement under the Private Securities Litigation Reform Act of
1995
- -----------------------------------------------------------------------------

Statements in this Report on Form 10-Q and other  statements made by the Company
or its representatives that are not strictly historical facts including, without
limitation,  statements  included  herein  under  the  captions  "Liquidity  and
Financial Condition" and "Year 2000" are "forward-looking" statements within the
meaning of the Private  Securities  Litigation Reform Act of 1995 that should be
considered  as  subject to the many  risks and  uncertainties  that exist in the
Company's operations and business  environment.  The forward-looking  statements
are based on  current  expectations  and  involve a number of known and  unknown
risks and uncertainties that could cause the actual results,  performance and/or
achievements  of the  Company  to differ  materially  from any  future  results,
performance  or  achievements,   express  or  implied,  by  the  forward-looking
statements.  Readers  are  cautioned  not  to  place  undue  reliance  on  these
forward-looking  statements,  and that in light of the significant uncertainties
inherent in forward-looking  statements, the inclusion of such statements should
not be regarded as a representation  by the Company or any other person that the
objectives or plans of the Company will be achieved. The Company also assumes no
obligation to update its  forward-looking  statements or to advise of changes in
the assumptions and factors on which they are based.










































                                       -11-


<PAGE>




                                           PART II

ITEM 1 - LEGAL PROCEEDINGS
- ------   -----------------
         The Company has no material outstanding litigation.


ITEM 2 - CHANGES IN SECURITIES
- ------   ---------------------
         None


ITEM 3 - DEFAULTS UPON SENIOR SECURITIES
- ------   -------------------------------
         None


ITEM 4 - SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
- ------   ---------------------------------------------------
         None


ITEM 5 - OTHER INFORMATION
- ------   -----------------
         None


ITEM 6 - EXHIBITS AND REPORTS ON FORM 8-K
- ------   --------------------------------

EXHIBIT
NUMBERS      DESCRIPTION
- -------      -----------
  10         Material Contracts

             (.1)  Advice of borrowing terms between the Registrant and National
                   Westminster Bank PLC dated March 27, 1998.

             (.2)  Credit Agreement  between the Registrant and KeyBank National
                   Association dated July 20, 1998.



         No Form 8-K was required to be filed during the current quarter.

















                                       -12-




<PAGE>







Pursuant to the  requirements  of the  Securities  and Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.





August 13, 1998








                                           VICON INDUSTRIES, INC.







Kenneth M. Darby                           Arthur D. Roche
President                                  Executive Vice President
Chief Executive Officer                    Chief Financial Officer






























                                       -13-




<PAGE>




Pursuant to the  requirements  of the  Securities  and Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.





August 13, 1998







                                           VICON INDUSTRIES, INC.
                                           VICON INDUSTRIES, INC.






Kenneth M. Darby                           Arthur D. Roche
Kenneth M. Darby                           Arthur D. Roche
President                                  Executive Vice President
Chief Executive Officer                    Chief Financial Officer




















ADVICE OF BORROWING TERMS                    Ref: CM  RM03



BRANCH/UNIT:      National Westminster Bank PLC
                  4th Floor, Society Building,
                  176 London Road, Portsmouth, PO2 9DR


DATE:   27 March 1998


BORROWER'S NAME:   VICON INDUSTRIES (UK) LIMITED (Registered Number 1551194)
                    Brunel Way, Fareham, Hants   PO15 5TX


(This letter replaces the Advice of Borrowing Terms letter dated 22 April 1997)


Subject to the Bank's  rights  below and subject to the Bank's  rights under the
`General terms upon which the Bank makes facilities available', it is the Bank's
current  intention  that the  facilities  specified in this `Advice of Borrowing
Terms'  (except for those  facilities  which are  subject to their own  separate
facility  documentation  covered  below  under  `Facilities  subject to separate
documentation') should remain available until 27 March 1999.




FACILITY 1:


Facility Type: Overdraft.


Amount:   (pound)600,000  (Six hundred thousand pounds).


Purpose:   Working capital requirements.


Repayment:   Fully fluctuating.


1st Debit Interest Rate:   2% per annum above NatWest's Base Rate from time to 
                           time.


2nd Debit Interest Rate: (Applicable above(pound)600,000)  5% per annum above 
                         NatWest's Base Rate.


Payable:    Quarterly.

<PAGE>


REPAYMENT:


It is the Bank's current intention that the facilities should be reviewed by the
dates indicated herein.  However,  all amounts  outstanding under the facilities
are repayable on demand, which may be made by the Bank at its sole discretion at
any time.  The  facilities  may also, by notice,  be withdrawn,  reduced or made
subject to further conditions or otherwise varied.

INTEREST:

All rates specified above are variable.  If the interest rate specified above is
not linked to the Bank's Base Rate,  interest  will be charged  initially at the
rate per annum specified  above,  which may vary from time to time at the Bank's
absolute discretion.  Details of the current rates are available from the branch
or office where the facility is provided.

Interest on any  indebtedness  from time to time in excess of agreed  facilities
will be charged  at the  interest  rate  detailed  above.  An excess fee will be
charged at the Bank's  published rate from time to time  (currently  (pound)3.50
per day) for each day that your agreed overdraft limit is exceeded . The Bank is
not obliged to allow (or to continue to allow) any such excess borrowing.

The Bank may alter the basis upon which  interest is calculated  (including  the
size of the margin charged over the Bank's Base Rate or other published rate) on
facilities  and/or the amount of any regular  repayments of facilities which are
repayable  on demand (or by notice),  but it will give the  customer one month's
notice before doing so.


OTHER FACILITIES:

Facility Type:   Forward Exchange Liability.

Amount:   (pound)200,000 (represents 10% of contract).



Facility Type:   Terminable Indemnities (T/I).

Amount:   (pound)200,000.

Purpose:   HM Customs & Excise Duty Deferment Bond.



Facility Type:   Inward Collections - Documents Release in Trust

Amount:   (pound)20,000.

These facilities may by notice be withdrawn,  reduced or made subject to further
conditions or otherwise varied.

<PAGE>


SECURITY:


The Bank  continues to rely on its existing  security (and  requires  additional
security  where  specified)  detailed  below for the  discharge on demand of all
present and future  liabilities  (both actual and contingent) of the Borrower(s)
to the Bank.  The  liabilities  secured will  include  without  limitation,  all
liabilities,  of the  Borrower  to the Bank  under the  facility  or  facilities
specified in this Advice of  Borrowing  Terms  including  those which are listed
below under the heading `Facilities subject to separate documentation'.

From time to time the Bank may wish to revalue the  security and the cost of any
valuations required by the Bank will be met by the Borrower. Further information
is  included  in the  `General  terms  upon  which  the  Bank  makes  facilities
available'.


Date Executed/New    Title of Security            Asset
- ------------------   --------------------------   ------------------------------
6 July 1989          Guarantee(pound)1,000,000    Given by Vicon Industries Inc.

17 October 1990      Mortgage Debenture           Capturing all assets of the 
                                                  company.

9 April 1997         First Legal Mortgage         Site P3, Brunel Way, 
                                                  Segensworth Industrial Estate,
                                                  Fareham.


FEES:


Type:    Overdraft renewal fee.

Amount:  (pound)1,850  (from account 01144642  560064).

Date to be debited:  15 April 1998  (last annual fee was paid on 27 March 1997).


OTHER CONDITIONS:

    Please  continue to provide  monthly  management  accounts in the  existing
    format, together with aged debtor profile.

    Lending  formulae to continue  whereby:  1) Debtors  less than 90 days plus
    stock (minus  preferentials)  to cover  overdraft by 250%,  2) Debtors alone
    less than 90 days to provide 150% cover of overdraft.


FACILITIES SUBJECT TO SEPARATE DOCUMENTATION

Facility Type:   Commercial Fixed Rate Loan

Amount:   Balance(pound)454,167 plus interest (Originally(pound)500,000  
          drawndown 14 April 1997)

<PAGE>


GENERAL TERMS:


Please note that all  facilities  specified in this `Advice of Borrowing  Terms'
are made  available  subject  to the  `General  terms  upon which the Bank makes
facilities   available',   except  for  those   subject  to  separate   facility
letters/agreement  forms which do not expressly  incorporate  the General Terms.
Please  note that all  facilities  are also  subject  to any terms  which may be
implied by English Law.






John McLellan
Corporate Manager


The Borrower confirms acceptance of the above terms and conditions pursuant to a

                                                  30 - 3 - 98
Resolution of the Board of Directors on .......................................




                                            Chris Wall
BORROWER'S SIGNATURE:   ......................................................
                                        For and on behalf of
                                  Vicon Industries (UK) Limited

                                         30th March 1998
               ...........................................................Date



                                  $14,000,000
                               CREDIT AGREEMENT


                                 July 20, 1998


                                    between


                            VICON INDUSTRIES, INC.

                                      and

                         KEYBANK NATIONAL ASSOCIATION




<PAGE>



            CREDIT AGREEMENT (the "Agreement") dated July 20, 1998 between Vicon
Industries,  Inc., 89 Arkay Drive,  Hauppauge,  New York 11788  ("Borrower") and
KeyBank National Association,  1377 Motor Parkway,  Islandia,  New York 11788, a
national banking association (the "Bank").

            Borrower  desires  that the Bank  extend  credit  to it as  provided
herein,  and the Bank is willing to do so.  Accordingly,  Borrower  and the Bank
agree as follows:

ARTICLE 1.  DEFINITIONS; ACCOUNTING TERMS.

            Section 1.01.  Definitions.  As used in this Agreement, the 
following terms have the following meanings:

            "Acquisition"  means any  transaction  pursuant to which Borrower or
any of its Subsidiaries (a) acquires equity securities (or warrants,  options or
other  rights to  acquire  such  securities)  of any  corporation,  partnership,
limited liability company or other business organization, or any Person which is
not then a  Subsidiary  of  Borrower,  pursuant  to a  solicitation  of  tenders
therefor,  or in one or more negotiated block,  market or other transactions not
involving a tender offer, or a combination of any of the foregoing, or (b) makes
any Person not then a Subsidiary of Borrower a Subsidiary of Borrower, or causes
any such  Person  to be  merged  into or  purchased  by  Borrower  or any of its
Subsidiaries,  in any case  pursuant  to a  merger,  purchase  of  assets or any
reorganization  providing  for the  delivery  or issuance to the holders of such
Person's then outstanding securities,  in exchange for such securities,  of cash
or securities of Borrower or any of its Subsidiaries,  or a combination thereof,
or (c)  purchases  all or  substantially  all of the  business  or assets of any
Person.

            "Additional  Costs"  shall  have the  meaning  given to that term in
Section 4.01 hereof.

            "Affiliate"  means, with respect to any Person,  any Person (a) that
directly or indirectly controls, or is controlled by, or is under common control
with, such Person, (b) that directly or indirectly beneficially owns or holds 5%
or more of any  class  of  voting  stock of such  Person,  (c) 5% or more of the
voting stock of which is directly or  indirectly  beneficially  owned or held by
such Person,  (d) which is a partnership or limited  liability  company in which
such  Person is  respectively  a general  partner or manager or (e) who is among
such Person's  officers,  directors joint venturers,  managers or partners.  The
term "control"  means the  possession,  directly or indirectly,  of the power to
direct  or cause the  direction  of the  management  and  policies  of a Person,
whether through the ownership of voting securities, by contract, or otherwise.

            "Aggregate Bankers Acceptance  Outstandings"  means, at a particular
time, the sum of aggregate amount of Bankers Acceptances created by the Bank for
Borrower hereunder.


                                   - 1 -

<PAGE>



            "Aggregate  Letters of Credit  Outstandings"  means, at a particular
time, the sum of (a) the aggregate maximum amount then available or available in
the future to be drawn  under all  outstanding  Letters  of Credit  plus (b) the
aggregate  amount of any  payments  made by the Bank  under any Letter of Credit
that have not been reimbursed by the Borrower.

            "Aggregate Outstandings" means, at a particular time, the sum of (a)
the aggregate  outstanding  principal balance of all Revolving Credit Loans, (b)
the  Aggregate  Letters of Credit  Outstandings  and (c) the  Aggregate  Bankers
Acceptance Outstandings.

       "Agreement" means this Credit Agreement,  as amended or supplemented
from time to time.

       "Amortization" means amortization as determined in accordance with GAAP.

       "Bank" means KeyBank National Association and its successors and assigns.

            "Bankers Acceptances" means bankers' acceptances  established by the
Bank hereunder which satisfy eligibility  requirements  established by the Board
of Governors of the Federal Reserve System from time to time.

            "Banking  Day"  means  any day on  which  commercial  banks  are not
authorized or required to close in New York State, and whenever such day relates
to a LIBOR  Loan or  notice  with  respect  to any  LIBOR  Loan,  a day on which
dealings in dollar deposits are also carried out in the London interbank market.

            "Capital  Expenditures"  means  expenditures for any fixed assets or
improvements,  replacements,  substitutions,  or additions  thereto which have a
useful life of more than one year.

            "Capital  Lease" means any lease which is required to be capitalized
on the balance sheet of the lessee in accordance with GAAP.

            "Chun Shin" means Chun Shin Industries,  Inc., a corporation  formed
under the laws of the Republic of Korea.

            "Chun Shin Acquisition  Debt" is defined in the definition below for
Debt Coverage Ratio.

            "Closing  Date" means the date this  Agreement  has been executed by
Borrower and the Bank.

            "Code" means the Internal Revenue Code of 1986, as amended from time
to time.


                                   - 2 -

<PAGE>



            "Current Chun Shin Acquisition Debt" is defined in the definition 
below for Debt Coverage Ratio.

            "Current Debt" means, on the date of determination with respect to 
any Person, that portion of such Person's long term debt, including Capital 
Leases and the outstanding principal balance of the Term Loan, that is due and 
payable within the next 12 months.  Current Debt shall exclude all Revolving 
Credit Loans.

            "Debt" means,  with respect to any Person (a)  indebtedness  of such
Person for borrowed  money,  (b)  indebtedness  relating to the  acquisition  of
property  where the full purchase price is not paid at the time such property is
acquired but is required to be paid, in whole or in part,  thereafter (excluding
trade debt and accounts payable), (c) the face amount of any outstanding letters
of credit issued for the account of such Person,  (d) obligations  arising under
acceptance facilities,  (e) guaranties and endorsements (other than endorsements
for collection in the ordinary course of business) under which such Person has a
direct,  non-contingent  payment or  performance  obligation,  (f) other direct,
non-contingent  obligations to purchase, to provide funds for payment, to supply
funds to invest in any Person,  or otherwise to assure a creditor  against loss,
(g) obligations  secured by any Lien on property of such Person, (h) obligations
of such  Person as lessee  under  Capital  Leases and (i)  indebtedness  of such
Person evidenced by a note, bond, indenture or similar instrument.

            "Debt Coverage Ratio" means (a) the consolidated  EBITDA of Borrower
and its  Subsidiaries,  minus any cash  Dividends paid or declared to be paid to
shareholders  of Borrower for the prior 12 month period,  (b) divided by the sum
of the Current Debt (including  Current Chun Shin  Acquisition  Debt,  except as
provided below) and Interest  Expense of Borrower and its  Subsidiaries all on a
consolidated basis, as determined at the end of each fiscal quarter,  based upon
Borrower's  financial  statements  delivered in accordance with Section 8.08. If
Borrower  completes an Acquisition of Chun Shin under terms where all or part of
the  Acquisition  price is payable  following  consummation  of the  Acquisition
("Chun Shin  Acquisition  Debt"),  and if, at the date of  determination of Debt
Coverage Ratio, the amount of the Revolving Credit  Commitment then available to
Borrower  hereunder  equals or exceeds that portion of the Chun Shin Acquisition
Debt  which is due and  payable  within the next 12 months  ("Current  Chun Shin
Acquisition  Debt"), then 50% of the Current Chin Shin Acquisition Debt shall be
excluded  from  Current Debt for the  purposes of  computing  the Debt  Coverage
Ratio.

            "Default"  means any event  which with the giving of notice or lapse
of time, or both, would become an Event of Default.

            "Default Rate" means, with respect to the principal of any Loan and,
to the extent  permitted by law, any other amount payable by Borrower under this
Agreement  or the Notes,  a rate per annum equal to the Prime Rate plus a margin
of 2%.

        "Depreciation" means depreciation as determined in accordance with GAAP.


                                   - 3 -

<PAGE>



            "Dividends" means, for any period, dividends paid by Borrower or any
Subsidiary during such period.

            "Domestic  Subsidiary"  means a Subsidiary which is formed under the
laws of any United States  jurisdiction  and which has its principal  office and
business operations in the United States.

            "EBITDA"  means,  for any  period,  the sum of (a) Net  Income,  (b)
income taxes paid or payable to any  government or  government  instrumentality,
(c) all Interest  Expense paid or accrued on any Debt, (d)  Depreciation and (e)
Amortization during such period.

            "Environmental  Laws"  means  (i)  the  Comprehensive  Environmental
Response,   Compensation  and  Liability  Act  ("CERCLA"),   (ii)  the  Resource
Conservation  and  Recovery  Act  ("RCRA"),  (iii) the Federal  Water  Pollution
Control Act, (iv) the Clean Air Act, (v) the Toxic Substances  Control Act, (vi)
the Safe Drinking  Water Act,  (vii) the  Occupational  Safety and Health Act of
1970,  and (viii) the New York State  Environmental  Conservation  Law  ("ECL"),
Articles 1 through 71, (ix) the Hazardous Material  Transportation  Act, and (x)
any so-called  federal,  state or local  "Superfund" or "Superlien" laws and (b)
any and all other laws, rules or regulations, relating to or imposing liability,
including  without  limitation (i) strict  liability,  (ii) standards of conduct
concerning hazardous materials,  (iii) protection of the environment (including,
without  limitation,  air,  surface water,  ground water,  or soil),  including,
without  limitation,  any of the same relating to the  manufacture,  processing,
distribution,  use,  treatment,  storage,  disposal,  transport,  or handling of
pollutants,   contaminants,   chemicals,  or  industrial,   toxic  or  hazardous
substances or wastes.

            "ERISA" means the Employee  Retirement  Income Security Act of 1974,
as amended from time to time,  including any rules and  regulations  promulgated
thereunder.

            "ERISA  Affiliate"  means any corporation or trade or business which
is a member of the same controlled group of corporations  (within the meaning of
Section 414(b) of the Code) as Borrower or is under common  control  (within the
meaning of Section 414(c) of the Code) with Borrower.

            "Event of Default" has the meaning given such term in Section 11.01.

            "Facility Fee" means the fee described in Section 2.09 hereof.

            "Forfeiture  Proceeding"  means the  commencement of any prejudgment
action or proceeding  affecting Borrower or any of its Subsidiaries  pursuant to
any  statute,  rule or  regulation  which  permits  any  governmental  agency or
instrumentality  to obtain a  prejudgment  seizure or forfeiture of any of their
property.


                                   - 4 -

<PAGE>



            "GAAP" means generally accepted accounting  principles in the United
States of America as in effect from time to time,  applied on a basis consistent
with those used in the  preparation of the financial  statements  referred to in
Section 7.05.

            "Guaranty" means the Guaranty in the form of Exhibit B to be 
executed by each of the Guarantors.

            "Guarantors" means Vicon Industries International Sales Corp., 
Vicon Industries Foreign Sales Corp. and each future Subsidiary which is 
required to become a party to the Guaranty in accordance with Section 9.10 
hereof.

            "Hazardous  Substance"  means  any  substance,   waste  or  material
regulated under by any  Environmental  Law, and any substance  which, due to its
toxicity or reactivity (as determined by any court,  governmental  or regulatory
authority or agency having jurisdiction or interpretative power thereon),  poses
a threat to human health or the environment,  including, but not limited to, all
materials,  wastes,  substances,  pollutants and contaminants  from time to time
defined or classified as such under any Environmental Law.

            "Interest  Expense"  means  interest  expense  of  Borrower  and its
Subsidiaries on a consolidated basis for a particular period as reflected in its
financial statements and calculated in accordance with GAAP.

            "Interest  Period"  means the period  commencing on the date a LIBOR
Loan is made (or, with respect to a LIBOR Loan that represents the  continuation
of a previous  LIBOR Loan,  the day  immediately  following  the last day of the
Interest Period of such previous LIBOR Loan), and ending, as Borrower may select
on the 30th, 60th or 90th day thereafter, provided that no Interest Period shall
extend beyond the Revolving Credit Termination Date.

            "Letters  of Credit"  means any letter of credit  issued by the Bank
for Borrower pursuant to the terms of this Agreement.

            "LIBOR"  means,  for any LIBOR  Loan,  the rate per  annum  (rounded
upwards if  necessary  to the nearest 1/16 of 1%) quoted by the Bank two Banking
Days prior to the first day of the  Interest  Period for such  Revolving  Credit
Loan for the offering to leading  banks in the London  interbank  market of U.S.
dollar deposits in immediately  available funds, for a period, and in an amount,
comparable to such Interest Period and principal  amount of the LIBOR Loan which
shall be outstanding during such Interest Period.

            "LIBOR Loan" means any Revolving  Credit Loan when and to the extent
the interest rate therefor is determined on the basis of LIBOR.

            "Lien" means any lien (statutory or otherwise),  security  interest,
mortgage,  deed of trust,  priority,  pledge,  charge,  conditional  sale, title
retention  agreement,  Capital  Lease or other  encumbrance  or similar right of
others, or any agreement to give any of the foregoing.

                                   - 5 -

<PAGE>




            "Loan" means any loan made by the Bank pursuant to Section 2.01 or 
3.01 hereof.

            "Loan Documents"  means this Agreement,  the Notes, the Guaranty and
all other documents or instruments executed in connection herewith or therewith.

            "Multiemployer  Plan"  means  a Plan  defined  as  such  in  Section
4001(a)(3)  of ERISA to which  contributions  have been made by  Borrower or any
ERISA affiliate and which is covered by Title IV of ERISA.

            "Net Income" means, with respect to any Person for any period,  such
Person's net income  after taxes for such period as  reflected on such  Person's
financial statements.

            "Notes" mean the Revolving Credit Note and the Term Note.

            "Notice of  Borrowing"  means the  document  signed by an officer of
Borrower in the form annexed as Exhibit D.

            "PBGC" means the Pension Benefit Guaranty Corporation and any entity
succeeding to any or all of its functions under ERISA.

            "Person" means an  individual,  partnership,  corporation,  business
trust, joint stock company,  trust,  limited liability  company,  unincorporated
association,  joint venture,  governmental authority or other entity of whatever
nature.

            "Plan"  means any  employee  benefit  or other plan  established  or
maintained,  or to which  contributions have been made, by Borrower or any ERISA
Affiliate  and which is covered by Title IV of ERISA or to which  Section 412 of
the Code  applies  provided  that such term shall not include  plans  terminated
prior to the date hereof.

            "Prime  Rate"  means  that  rate  of  interest  from  time  to  time
determined or announced by the Bank at its Principal Office from time to time as
its base  lending  rate.  The Prime Rate is not  necessarily  the lowest rate of
interest charged by the Bank on loans or other credit relationships.

            "Prime Rate Loans"  mean any  Revolving  Credit Loan when and to the
extent  the  interest  rate for such  Revolving  Credit  Loan is  determined  in
relation to the Prime Rate.

            "Principal Office" means the principal office of the Bank, presently
located at 127 Public Square, Cleveland, Ohio.

            "Regulation  D" means  Regulation D of the Board of Governors of the
Federal Reserve System as the same may be amended or  supplemented  from time to
time.


                                   - 6 -

<PAGE>



            "Regulatory  Change"  means  any  change  after  the  date  of  this
Agreement in federal, state, municipal or foreign laws or regulations (including
Regulation D) or the adoption or making after such date of any  interpretations,
directives  or requests  applying to a class of banks  including the Bank of any
federal,  state, municipal or foreign laws or regulations (whether or not having
the force of law) by any court or  governmental  or monetary  authority  charged
with the interpretation or administration thereof.

            "Reportable  Event"  means any of the  events  set forth in  Section
4043(b) of ERISA as to which  events the PBGC by  regulation  has not waived the
requirement  of Section  4043(a) of ERISA that it be notified  within 30 days of
the  occurrence  of such  event,  provided  that a failure  to meet the  minimum
funding  standard  of Section 412 of the Code or Section 302 of ERISA shall be a
Reportable  Event  regardless of any waivers  given under Section  412(d) of the
Code.

            "Revolving  Credit  Commitment"  means the obligation of the Bank to
extend  revolving  credit to Borrower in accordance with the terms hereof in the
aggregate principal amount not to exceed $7,500,000, or if Borrower elects under
Section 2.06 to increase the Revolving Credit  Commitment,  $9,500,000,  as such
amount may be reduced or otherwise modified from time to time in accordance with
the terms hereof.

            "Revolving  Credit  Facility"  means the Revolving  Credit  Facility
provided for in Article II hereof.

            "Revolving  Credit Loans" mean any Loan made by the Bank pursuant to
Section 2.01 hereof.

            "Revolving  Credit Note" means a promissory  note of Borrower in the
form of Exhibit  A-1  evidencing  the  Revolving  Credit  Loans made by the Bank
hereunder.

            "Revolving  Credit  Termination  Date"  means the earlier of (i) the
date on which the Revolving Credit Loan is paid in full and the Revolving Credit
Commitments  shall  terminate  hereunder  and the  obligations  of  Borrower  in
connection  therewith  have been  satisfied or (ii) the date four years from the
date hereof  unless  such date is not a Banking  Day,  then the next  succeeding
Banking Day.

            "Solvent"  means,  when  used  with  respect  to  any  Person  on  a
particular  date, that on such date (a) the fair saleable value of its assets is
in excess of the total amount of its liabilities, including, without limitation,
the  reasonably  expected  amount of such Person's  obligations  with respect to
contingent  liabilities,  (b) the present fair  saleable  value of the assets of
such  Person  is not less  than the  amount  that  will be  required  to pay the
probable  liability  of such  Person on its Debts as they  become  absolute  and
matured,  (c) such Person  does not intend to and does not believe  that it will
incur Debts or liabilities beyond such Person's ability to pay as such Debts and
liabilities  mature  and  (d)  such  Person  is not  engaged  in  business  or a
transaction,  for which such Person's property, would constitute an unreasonably
small capital.

                                   - 7 -

<PAGE>




            "Subsidiary" means, as to any Person, any corporation,  partnership,
limited liability  company or other business  organization or entity of which at
least a majority of the securities or other ownership  interests having ordinary
voting power (absolutely or contingently) for the election of directors or other
persons  performing  similar  functions  are  at  the  time  owned  directly  or
indirectly by such Person. For the purposes of the financial covenants set forth
in Article 10 and the  definitions of Current Debt,  Debt,  Debt Coverage Ratio,
EBITDA, Interest Expense, Net Income, Tangible Net Worth, Total Assets and Total
Liabilities,  the balance sheet  information  and results of operations of Vicon
U.K. and any other Subsidiary which is not a Guarantor shall be excluded.

            "Tangible Net Worth" means,  at any  particular  date, the amount of
excess of Total Assets over Total  Liabilities  which would,  in accordance with
GAAP, be included under shareholders'  equity on a consolidated balance sheet of
Borrower and its  Subsidiaries as at such date. There shall be excluded from the
determination  of  Total  Assets  all  intangible  assets,  including,   without
limitation,  organizational expenses, patents, trademarks, copyrights, goodwill,
covenants not to compete,  research and  developmental  costs,  training  costs,
treasury  stock,  deferred  charges and any loans  receivable  from  officers or
Affiliates,  other than loans receivable from Affiliates incurred as a result of
sales of goods in the ordinary course of business.

            "Term Loan" means the Loan to Borrower pursuant to Section 3.01.

            "Term Loan Commitment Fee" means the fee described in Section 3.07.

            "Term Loan Maturity Date" means July 21, 2003.

            "Term Loan Note" means the  promissory  note of Borrower in the form
of Exhibit A-2 evidencing a Term Loan made by the Bank hereunder.

            "Total Assets" means, at a particular date, all amounts which would,
in accordance  with GAAP,  be included  under assets on a  consolidated  balance
sheet of Borrower and its Subsidiaries as at such date.

            "Total  Liabilities"  means, at a particular date, all amounts which
would, in accordance with GAAP, be included under  liabilities on a consolidated
balance sheet of Borrower and its Subsidiaries as at such date.

            "Unfunded Vested  Liabilities"  means, with respect to any Plan, the
amount (if any) by which the present value of all vested benefits under the Plan
exceeds the fair market value of all Plan assets allocable to such benefits,  as
determined on the most recent  valuation date of the Plan and in accordance with
the provisions of ERISA for calculating  the potential  liability of Borrower or
any ERISA Affiliate to the PBGC or the Plan under Title IV of ERISA.

            "Vicon U.K." means Vicon  Industries  (U.K.),  Ltd.,  a  corporation
formed under the laws of the United Kingdom.

                                   - 8 -

<PAGE>




            Section  1.02.   Accounting   Terms.   All   accounting   terms  not
specifically  defined herein shall be construed in accordance with GAAP, and all
financial  data  required  to  be  delivered  hereunder  shall  be  prepared  in
accordance with GAAP.

ARTICLE 2.  REVOLVING CREDIT FACILITY

            Section 2.01.  Revolving Credit Loans.

            (a) Subject to the terms and conditions of this Agreement,  the Bank
agrees to make  Revolving  Credit  Loans to Borrower  from time to time from and
including the date hereof to but excluding the Revolving Credit Termination Date
up to but not exceeding at any one time  outstanding the amount of its Revolving
Credit  Commitment;  provided,  that no Revolving  Credit Loan shall be made if,
after giving effect to such Revolving Credit Loan, the Aggregate Outstandings at
the time would exceed the  Revolving  Credit  Commitment in effect on such date.
The Revolving  Credit Loans may be Prime Rate Loans or LIBOR Loans at Borrower's
option;  provided,  however,  that during the occurrence  and  continuance of an
Event of Default, the Bank shall have no obligation to make any Revolving Credit
Loans. Subject to the foregoing limits, Borrower may borrow, repay and reborrow,
on or after the date hereof and prior to the Revolving Credit  Termination Date,
all or a portion of the Revolving Credit Commitment hereunder.

            (b) If at any time for any reason the Aggregate  Outstandings exceed
the amount of the Revolving Credit Commitment,  Borrower shall pay the amount of
such  excess to the Bank  immediately  on demand.  The  amount of the  Revolving
Credit  Commitment  available to Borrower is subject to reduction as provided in
Section 9.01.

            Section 2.02. The Revolving  Credit Note. The Revolving Credit Loans
shall  be  evidenced  by a  single  Revolving  Credit  Note in favor of the Bank
substantially  in the form of  Exhibit  A-1 with  appropriate  insertions,  duly
executed and  completed by Borrower.  The Bank is authorized to record the date,
type and  amount of each  Revolving  Credit  Loan,  the date and  amount of each
payment or  prepayment  of principal  thereof,  the date of each  interest  rate
conversion pursuant to Section 2.05 and the principal amount subject thereto and
the Interest  Period and interest rate with respect thereto in its records or on
the schedules  annexed to and  constituting a part of the Revolving Credit Note,
and, absent manifest error,  any such recordation  shall  constitute  conclusive
evidence of the  information so recorded;  provided that the failure to make any
such recordation shall not in any way affect Borrower's  obligation to repay the
Revolving  Credit Loans.  The Revolving  Credit Note shall (a) be dated the date
hereof,  (b)  mature  on the  Revolving  Credit  Termination  Date  and (c) bear
interest  from and  including  the date  hereof on the unpaid  principal  amount
thereof from time to time outstanding as provided herein.

            Section 2.03.  Use of Revolving Credit Proceeds.


                                   - 9 -

<PAGE>



            (a) Borrower  shall use the proceeds of the  Revolving  Credit Loans
(i) for general working capital purposes and letters of credit,  (ii) subject to
the sublimit described in Section 2.08, to finance Acquisitions  permitted under
Section 9.07 and (iii) for  investments  and advances  permitted  under  Section
9.03.  Borrower may not advance any proceeds from a Revolving Credit Loan to any
Subsidiary or Affiliate unless it is a Guarantor.

            (b) No part  of the  proceeds  of any  Loans  will  be used  for any
purpose which violates the provisions of Regulation G, T, U or X of the Board of
Governors of the Federal  Reserve System as in effect on the date of making such
Loans.

            (c) Borrower shall  indemnify the Bank and hold it harmless from and
against any and all liabilities, losses, damages, costs and expenses (including,
without  limitation,  the reasonable fees and  disbursements  of counsel for the
Bank  in  connection  with  any   investigative,   administrative   or  judicial
proceeding,  whether or not the Bank is designated a party thereto) which may be
incurred by the Bank, relating to or arising out of this Agreement or any actual
or proposed use of proceeds of Loans  hereunder;  provided,  that the Bank shall
not have the right to be indemnified  hereunder for its own gross  negligence or
willful misconduct.

            Section  2.04.  Borrowing  Procedures  for  Revolving  Credit Loans.
Borrower  may request a  borrowing  under the  Revolving  Credit  Commitment  as
provided in Section  4.01.  Not later than 11:00 a.m.  New York City time on the
date of such  borrowing  as  stated  in a Notice of  Borrowing,  subject  to the
conditions  of this  Agreement,  the Bank shall make  available to Borrower,  in
immediately  available  funds,  the  amount  of such  Revolving  Credit  Loan by
crediting a designated account of Borrower maintained with the Bank.

            Section 2.05.  Interest on Revolving Credit Loans.

            (a) Prime Rate Loans. Borrower shall pay interest on the outstanding
and unpaid principal amount of each Prime Rate Loan made under this Agreement at
a  fluctuating  rate per  annum  equal to the  Prime  Rate  from time to time in
effect,  minus a margin of 200 basis  points.  Each change in the interest  rate
shall take  effect  simultaneously  with the  corresponding  change in the Prime
Rate.  Borrower  shall pay  interest on Prime Rate Loans in arrears on the first
day of each month and on the Revolving Credit  Termination  Date,  calculated on
the basis of the actual  number of days elapsed  divided by a 360 day year.  Any
principal amount not paid when due (at maturity, on acceleration,  or otherwise)
shall bear interest thereafter until paid at the Default Rate.

            (b) LIBOR  Loans.  Borrower  shall pay  interest on the  outstanding
principal  amount of each LIBOR Loan made under this  Agreement  at a fixed rate
equal to LIBOR plus a margin of 90 basis points.  Borrower shall pay interest on
LIBOR Loans calculated on the basis of the actual number of days elapsed divided
by a 360 day  year.  Any  principal  amount  not paid when due (at  maturity  or
acceleration  or  otherwise)  shall bear interest  thereafter  until paid at the
Default  Rate.  Accrued  interest  on LIBOR  Loans  shall be due and  payable in
arrears upon any date that Borrower makes a payment of principal and on the last
day of the Interest

                                   - 10 -

<PAGE>



Period with respect thereto;  provided that, after an Event of Default, interest
shall  accrue at the Default Rate and shall be due and payable from time to time
on demand of the Bank. Any principal amount of LIBOR Loans not paid when due (at
maturity,  on acceleration,  or otherwise) shall bear interest  thereafter until
paid at such  Default  Rate.  Borrower  may not have more than five LIBOR  Loans
outstanding at any one time.

            (c)  Interest  Periods  for LIBOR  Loans.  In the case of each LIBOR
Loan,  Borrower  shall select an Interest  Period of any duration in  accordance
with the  definition  of  Interest  Period in Section  1.01,  except  that if an
Interest  Period  would end on a day which is not a Banking Day,  such  Interest
Period shall be extended to the next Banking Day,  unless such Banking Day would
fall in the next calendar  month,  in which event such Interest Period shall end
on the  immediately  preceding  Banking  Day.  Any  Interest  Period which would
otherwise extend beyond the Revolving  Credit  Termination Date shall end on the
Revolving Credit Termination Date.

            (d)  Conversions.  Upon the expiration of an Interest Period for any
LIBOR Loan, or any portion thereof,  such LIBOR Loan or portion thereof shall be
automatically  converted  to a Prime Rate Loan  except to the  extent  that such
Revolving  Credit Loan shall be repaid hereunder or shall be required to be paid
hereunder  or unless  Borrower  shall have  notified  the Bank,  as  provided in
Section 4.01 hereof, of its intention to continue such LIBOR Loan or any portion
thereof as a LIBOR Loan.  Subject to the following  conditions  and to the terms
and conditions of this Agreement, Borrower may convert any Revolving Credit Loan
or portion thereof to a different type of Revolving Credit Loan:

                  (i) if less  than  all  Revolving  Credit  Loans  at the  time
outstanding  shall be converted,  the notice given by Borrower to the Bank shall
specify  the  aggregate  amount  of  Revolving  Credit  Loans in each case to be
converted;

                  (ii) in the case of a conversion of less than all  outstanding
Revolving Credit Loans, the aggregate principal amount of Revolving Credit Loans
to be  converted  shall not be less than  $50,000  (and if greater  in  integral
multiples of $10,000);

                  (iii) no  Revolving  Credit Loan may be  converted  to a LIBOR
Loan less than one month before the Revolving Credit Termination Date;

                  (iv) a LIBOR Loan may be  converted  to a Prime Rate Loan only
on the last day of an Interest Period; and

                  (v)  no  Revolving  Credit  Loan  or  portion  thereof  may be
converted to a LIBOR Loan during the occurrence  and  continuance of an Event of
Default.


                                   - 11 -

<PAGE>



            Section 2.06.  Changes of Commitment.

            (a) At the date hereof,  the Revolving Credit  Commitment is limited
to a maximum of  $7,500,000.  Borrower may increase the amount of the  Revolving
Credit  Commitment to a maximum of $9,500,000 at any time prior to July 20, 2000
by giving notice to the Bank as provided in Section 4.01,  together with payment
of an additional fee of $4,000. Once increased,  the Revolving Credit Commitment
may not be reduced.

            (b) Borrower may reduce or terminate the amount of unused  Revolving
Credit Commitment from time to time but not more than four times during the term
of this Agreement or more than once during any calendar year by giving notice to
the Bank of each  such  reduction  or  termination  to the Bank as  provided  in
Section 4.01. Any partial  reduction shall be in a minimum  aggregate  amount of
$1,000,000 or, if greater,  in integral  multiples of $250,000.  Once reduced or
terminated, the Revolving Credit Commitment may not be reinstated.

            Section 2.07.  Minimum Amounts.  Except for borrowings which exhaust
the full remaining  amount of the Revolving Credit  Commitment,  and prepayments
(in the case of Prime Rate Loans only)  which  result in the  prepayment  of all
Loans,  each  borrowing  and  each  prepayment  of  principal  shall be at least
$50,000, and if greater, in integral multiples of $10,000.

            Section  2.08.  Sublimits.  (a) Subject to the terms and  conditions
hereof,  the Bank agrees to make one or more  Revolving  Credit Loans to finance
Borrower's  Acquisitions,  provided  that,  (a)  the  aggregate  amount  of such
Revolving  Credit Loans shall not exceed (i) $7,500,000 if Borrower  consummates
the  Acquisition  of Chun Shin, and (ii) if Borrower does not acquire Chun Shin,
$4,500,000  for all other  Acquisitions  permitted  under  Section  9.07, in the
aggregate and (b) no Revolving Credit Loan for  Acquisitions  shall be permitted
if (i) an Event of Default has occurred which continues at such time, (ii) after
giving  effect to such  Loan,  the  Aggregate  Outstandings  at the time of such
issuance would exceed the Revolving Credit  Commitment in effect on such date or
(iii) as a result of such  Acquisition  or the making of such Loan,  an Event of
Default would occur.

            (b) Subject to the terms and conditions  hereof,  the Bank agrees to
create  Bankers  Acceptances  for Borrower and to issue Letters of Credit on its
behalf, provided that, after giving effect to the same, the sum of the Aggregate
Bankers Acceptance Outstandings and the Aggregate Letters of Credit Outstandings
will not exceed $5,000,000.

            Section 2.09. Letters of Credit and Bankers Acceptances. If the Bank
issues  Letters of Credit on  Borrower's  behalf or extends  credit to  Borrower
under the Revolving Credit Commitment by creating Bankers Acceptances,  the Bank
shall  require  Borrower to execute  such  documents as it  customarily  uses in
connection  with  Letters of Credit and  Bankers  Acceptance  financing  for its
borrowers generally. The interest rate that the Bank shall charge to Borrower in
connection with any Bankers  Acceptance  financing shall be such Bank's "Bankers
Acceptance  Reference  Rate" or other rate normally quoted by such Bank for such
purposes, plus a margin

                                   - 12 -

<PAGE>



of 100 basis points.  Borrower shall pay the customary fees and charges the Bank
imposes in connection with letter of credit financing.

            Section  2.10.  Mandatory  Prepayment.  If at any time the Aggregate
Outstandings exceed the Revolving Credit Commitment, Borrower promptly shall pay
or  prepay  so much of the  Revolving  Credit  Loans  outstanding  as  shall  be
necessary to reduce the  Aggregate  Outstandings  to the amount of the Revolving
Credit  Commitment  then in  effect.  All such  prepayments  shall be subject to
Section 5.05, and shall be applied first to Revolving Credit Loans  outstanding,
and then to Bankers Acceptances in such order as the Banks shall determine.

            Section 2.11.  Facility Fee.  Borrower shall pay the Bank a Facility
Fee equal to $15,000 at the Closing Date. Until the Revolving Credit Termination
Date,  Borrower shall pay the Bank an additional Facility Fee equal to ten basis
points on the average daily unused portion of the Revolving  Credit  Commitment.
This  additional  Facility  Fee shall be due and payable in arrears on the first
day of each calendar quarter and at the Revolving Credit  Termination  Date, and
shall not be reduced due to limitations on  availability  as provided in Section
9.01.

ARTICLE 3.  TERM LOAN.

            Section 3.01.  Term Loan.  Subject to the terms and conditions 
hereof, the Bank shall make a five year Term Loan to Borrower in the amount of 
$4,500,000 on the date hereof.

            Section 3.02.  The Term Loan Note.  The Term Loan shall be evidenced
by a single  promissory  note of Borrower  substantially  in the form of Exhibit
A-2,  with  appropriate  insertions,  payable  to  the  order  of the  Bank  and
representing  the obligation of Borrower to pay the unpaid  principal  amount of
the Term Loan,  with interest  thereon as described  herein.  The Term Loan Note
shall  (a) be dated the date  hereof,  (b)  provide  for  repayment  in 60 equal
consecutive  monthly  installments of principal,  be payable on the first day of
each month  commencing on September 1, 1998 and ending on the Term Loan Maturity
Date,  and (c) bear  interest,  payable  monthly on the first date of each month
(beginning  August 1,  1998)  for a period  from the date  hereof on the  unpaid
principal amount thereof at the applicable rates per annum specified herein. All
accrued and unpaid  interest  and fees shall be due and payable on the Term Loan
Maturity Date.

            Section 3.03. Interest Periods for Term Loan. While the Term Loan is
outstanding,  Borrower  shall  select  an  Interest  Period of any  duration  in
accordance  with the definition of Interest  Period in Section 1.01,  subject to
the  following  limitations:  (a) no Interest  Period shall have a duration less
than one month, and if any such proposed  Interest Period would otherwise be for
a shorter  period,  such  Interest  Period shall not be available  and (b) if an
Interest  Period would end on a day which is not a Banking  Date,  such Interest
Period shall be extended to the next Banking Day,  unless such Banking Day would
fall in the next calendar month in which event such Interest Period shall end on
the immediately preceding Banking Day. Any Interest Period which would otherwise
extend  beyond the Term Loan  Maturity  Date shall end on the Term Loan Maturity
Date.

                                   - 13 -

<PAGE>




            Section 3.04. Interest on the Term Loan. Borrower shall pay interest
on the  outstanding  and  unpaid  principal  balance of the Term Loan a rate per
annum equal to LIBOR, for the applicable  Interest Period,  plus a margin of 100
basis  points.  Interest on the Term Loan shall be  calculated on the basis of a
360 day year and shall be paid in  arrears on the first day of each month and on
the Term Loan Maturity Date. Accrued interest on the Term Loan Note shall be due
and payable in arrears upon any date that Borrower  makes a payment of principal
and on the last day of the Interest Period with respect  thereto.  Any principal
amount not paid when due (at maturity,  on acceleration or otherwise) shall bear
interest thereafter until paid at the Default Rate.

            Section 3.05.  Conversion to Fixed Rate Loan. At Borrower's election
made during the period beginning on the date hereof through  September 18, 1998,
provided  no Default  or Event of Default  then  exists,  Borrower  may effect a
change in the interest  rate on the Term Loan to a fixed rate by entering into a
Swap  Agreement  between the Borrower and the Bank, at the rate  established  by
exchange,  through Key Capital Markets, Inc., of the obligation evidenced by the
Term Loan Note for an obligation  bearing interest at a fixed rate having a term
that is  equivalent  to the  remaining  term of the Term  Loan.  The  rights and
obligations of Borrower and the Bank respecting such exchange shall be set forth
in a Swap Agreement to be executed between them. Once converted to a fixed rate,
the interest rate on the Term Loan may not change to any other rate.

            Section 3.06.  Use of Proceeds of Term Loan.  Borrower shall use the
proceeds of the Term Loan to repay  existing  Debt, to pay amounts due to Chugai
Boyeki (America) Corp. and Chugai Boyeki Company Limited and for general working
capital  purposes.  Borrower may not advance any proceeds  from the Term Loan to
any Subsidiary or Affiliate unless it is a Guarantor.

            Section 3.07. Commitment Fee.  Borrower shall pay the Bank a Term 
Loan Commitment Fee of $6,750 at the Closing Date.

ARTICLE 4.  GENERAL CREDIT PROVISIONS; FEES AND PAYMENTS.

            Section 4.01.  Certain  Notices.  (a) Borrower  shall give Notice of
Borrowing  to the  Bank  of  each  borrowing  pursuant  to  Section  2.04,  each
prepayment  pursuant to Section 4.02,  each  conversion or continuation of LIBOR
Loans  pursuant to Section 2.05 and each  increase,  reduction or termination of
Revolving Credit Commitment  pursuant to Section 2.06. Each such notice shall be
irrevocable,  and shall be  effective on the date of receipt only if received by
the Bank not later than 11:00 a.m., New York City time as follows:

                  (i) In the case of borrowings  and  prepayments  of Prime Rate
Loans, at least one Banking Day prior thereto;

                  (ii)  In the case of LIBOR Loans, at least three Banking Days 
prior thereto;

                                   - 14 -

<PAGE>




                  (iii)  In  the  case  of  reductions  or  termination  of  the
Revolving Credit Commitment, ten days prior thereto; and

                  (iv) In the  case of  conversions  or  continuations  of Loans
pursuant to Section 2.05, three Banking Days prior thereto.

Each such notice  relating to the borrowing,  conversion or prepayment of a Loan
shall specify the Loans to be borrowed,  converted or prepaid and the amount and
type  of the  Loans  to be  borrowed  or  prepaid  and the  date  of  borrowing,
conversion  or prepayment  (which shall be a Banking  Day).  Each such notice of
reduction or termination of the Revolving  Credit  Commitment  shall specify the
amount of the Revolving Credit  Commitment to be reduced or terminated.  Notices
to the Bank under this Section  4.01 may be by  facsimile to a telephone  number
furnished by the Bank for that purpose,  provided  Borrower gives further notice
sent the same day in accordance with Section 12.06.

            (b) The Bank shall establish  notice  procedures for issuing Letters
of Credit and creating Bankers Acceptances  consistent with the foregoing notice
requirements and with its customary practices for such facilities.

            Section 4.02.  Prepayments.

            (a) Borrower  shall have the right at any time and from time to time
to prepay any Prime Rate Loan,  in whole or in part,  upon at least one  Banking
Day's  prior  written  notice to the  Bank;  provided,  however,  that each such
partial  prepayment  of Prime  Rate Loans  shall not be less than  $50,000 or if
greater, in amounts which are integral multiples of $10,000.  Except as required
by  paragraph  (b) below or on the last day of an Interest  Period with  respect
thereto, Borrower shall not be permitted to prepay LIBOR Loans.

            (b) On the date of any reduction of the Revolving Credit  Commitment
as provided in Section 2.06,  Borrower  shall pay or prepay so much of the Loans
as shall be necessary in order that the Aggregate  Outstandings  will not exceed
the  Revolving  Credit  Commitment  after giving effect to such  reduction.  All
prepayments of LIBOR Loans due to a reduction of the Revolving Credit Commitment
shall be subject to Section 5.05.

            (c) All  prepayments  of principal  required by paragraph  (b) above
shall be applied first to Prime Rate Loans outstanding,  and then to LIBOR Loans
outstanding.

            (d) All prepayments of principal shall be accompanied by the payment
of all  accrued  interest  on the  amount so prepaid  and,  in the case of LIBOR
Loans, by all amounts required to be paid pursuant to Section 5.05.

            Section 4.03. Default Interest.  Notwithstanding any other provision
of this  Agreement,  upon the occurrence and continuance of an Event of Default,
each Loan outstanding hereunder shall bear interest at a rate per annum equal to
the Default Rate.

                                   - 15 -

<PAGE>




            Section 4.04. Payments Generally.  All payments under this Agreement
or the Notes shall be made in  immediately  available  funds not later than 2:00
p.m.  New York City time on the  relevant  dates  specified  above at the Bank's
office at 1377 Motor Parkway, Islandia, New York 11788.

            (a) Any  payment  made  after  such  time on such due date  shall be
deemed to have been made on the next succeeding Banking Day.

            (b) Whenever a new Loan is to be made on a date Borrower  repays any
principal of an outstanding  Loan, the Bank shall apply the proceeds of such new
Loan to the payment of the  principal  to be repaid and only an amount  equal to
the  difference  between the  principal to be borrowed  and the  principal to be
repaid  shall be made  available  by the Bank to Borrower as provided in Section
2.04 or paid by Borrower to the Bank  pursuant to this Section 4.04, as the case
may be.

            (c) The Bank may (but shall not be obligated to) debit the amount of
any such payment which is not made by the time  specified in Section  4.04(a) to
any ordinary  deposit account of Borrower with the Bank.  Borrower shall, at the
time of making each payment  under this  Agreement  or the Note,  specify to the
Bank the principal or other amount payable by Borrower under this Agreement.  If
Borrower fails to so specify,  the payment will be applied first to interest and
then to  principal,  unless a Default or Event of Default  has  occurred  and is
continuing, in which case the Bank may apply such payment as it may elect in its
sole discretion. If the due date of any payment under this Agreement or the Note
would  otherwise  fall on a day which is not a Banking  Day,  such date shall be
extended to the next  succeeding  Banking Day and interest  shall be payable for
any principal so extended for the period of such extension.

ARTICLE 5.  YIELD PROTECTION; ETC.

            Section 5.01.  Additional Costs.

            (a)  Borrower  shall pay  directly  to the Bank from time to time on
demand  such  amounts  as the Bank may  determine  (in the  manner  set forth in
Section  5.01(d)) to be necessary to  compensate  it for any  increases in costs
attributable  to its making or maintaining  any LIBOR Loans under this Agreement
or its Note or its obligation to make any LIBOR Loans hereunder or any reduction
in any amount  receivable by the Bank hereunder in respect of any LIBOR Loans or
such obligation or capital in respect of this Agreement (such increases in costs
and reductions in amounts  receivable being herein called  "Additional  Costs"),
resulting from any Regulatory Change which: (i) changes the basis of taxation of
any amounts  payable to the Bank under this  Agreement or the  Revolving  Credit
Note in respect  of any of such LIBOR  Loans  (other  than taxes  imposed on the
overall net income of the Bank for any LIBOR Loans by the  jurisdiction in which
the Bank has its  principal  office);  or (ii)  imposes or modifies any reserve,
special deposit, deposit insurance or assessment, minimum capital, capital ratio
or similar requirements relating to any extensions of credit or other assets of,
or any deposits  with or other  liabilities  of, the Bank;  or (iii) imposes any
other condition affecting this Agreement or the Note

                                   - 16 -

<PAGE>



(or any of such  extensions  of credit  or  liabilities).  The Bank will  notify
Borrower  of any event  occurring  after the date of this  Agreement  which will
entitle  the Bank to  compensation  pursuant  to this  Section  as  promptly  as
practicable after it obtains knowledge thereof by furnishing  Borrower a written
statement describing the Additional Costs entitling it to compensation hereunder
and the Bank's method of allocating to Borrower such  Additional  Costs.  If the
Bank requests  compensation  from  Borrower  under this Section or under Section
5.01(c),  Borrower may suspend the  obligation  of the Bank to make Loans of the
type with respect to which such compensation is requested.

            (b) Without limiting the effect of the foregoing  provisions of this
Section,  if by reason of any  Regulatory  Change,  the Bank  either  (i) incurs
Additional Costs based on or measured by the excess above a specified level of a
category of deposits or other liabilities of the Bank which includes deposits by
reference to which the interest rate on LIBOR Loans is determined as provided in
this Agreement or a category of extensions of credit or other assets of the Bank
which includes LIBOR Loans or (ii) becomes subject to restrictions on the amount
of such a category of liabilities or assets which it may hold, then, if the Bank
so elects by notice to  Borrower,  the  obligation  of the Bank to make Loans of
such type hereunder  shall be suspended  until the date such  Regulatory  Change
ceases to be in effect.

            (c) Without limiting the effect of the foregoing  provisions of this
Section,  Borrower  shall pay  directly to the Bank from time to time on request
such  amounts  as the Bank may  determine  (in the  manner  set forth in Section
5.01(d)) to be necessary to compensate the Bank for any  Additional  Costs which
are attributable to the maintenance by it or any of its affiliates  (pursuant to
any  Regulatory  Change) of capital  in  respect of its Loans  hereunder  or its
obligation  to make Loans  hereunder  (such  compensation  to  include,  without
limitation,  an amount  equal to any  reduction in return on assets or equity of
the  Bank to a level  below  that  which  it would  have  achieved  but for such
Regulatory  Change).  The  Bank  will  notify  Borrower  if  it is  entitled  to
compensation  pursuant  to this  Section as  promptly  as  practicable  after it
obtains  knowledge  thereof  by  furnishing  Borrower  with a written  statement
describing the Additional  Costs entitling it to compensation  hereunder and the
Bank's method of allocating to Borrower such Additional Costs.

            (d)  Reasonable  determinations  and  allocations  by the  Bank  for
purposes of the effect of any Regulatory  Change  pursuant to Sections  5.01(a),
(b) or (c) on its costs of making or maintaining Loans or its obligation to make
Loans,  or on amounts  receivable by, or the rate of return to, it in respect of
Loans or such obligation,  and of the additional  amounts required to compensate
the Bank, shall be conclusive absent demonstrated error.

            Section 5.02.  Limitation on Types of Loans.  Anything herein to the
contrary notwithstanding, if:

            (a) the Bank  determines  (which  determination  shall be conclusive
absent  demonstrated  error) that  quotations of interest rates for the relevant
deposits  referred to in the definition of "LIBOR" in Section 1.01 are not being
provided in the relevant amounts or for the

                                   - 17 -

<PAGE>



relevant maturities for purposes of determining the rate of interest for any 
type of LIBOR Loans as provided in this Agreement; or

            (b) the Bank  determines  (which  determination  shall be conclusive
absent  demonstrated  error) that the relevant rates of interest  referred to in
the  definition  of LIBOR in  Section  1.01  upon the basis of which the rate of
interest for any type of LIBOR Loans is to be determined do not adequately cover
the cost to the Bank of making or  maintaining  such Loans;  then the Bank shall
give Borrower  prompt notice thereof,  and so long as such condition  remains in
effect,  the  obligations of the Bank to make LIBOR Loans shall be suspended (in
which case the provisions of Section 5.04 shall be applicable).

            Section 5.03.  Illegality.  Notwithstanding  any other  provision in
this Agreement,  if it becomes  unlawful for the Bank to honor its obligation to
make or maintain LIBOR Loans hereunder,  the Bank shall promptly notify Borrower
and the Bank's  obligation to make or maintain  LIBOR Loans  hereunder  shall be
suspended  until such time as the Bank may again make and maintain such affected
Loans (in which case the provisions of Section 5.04 shall be applicable).

            Section 5.04.  Conversion to Prime Rate Loans. If the obligations of
the Bank to make LIBOR Loans shall be suspended pursuant to any of the foregoing
Sections  all Loans  which  would  otherwise  be made by the Bank as LIBOR Loans
shall be made  instead  as Prime  Rate Loans  and,  if an event  referred  to in
Section  5.01(b)  or 5.03 has  occurred  and the Bank so  requests  by notice to
Borrower,  all LIBOR Loans of the Bank then  outstanding  shall be automatically
converted  into  Prime  Rate  Loans  on the date  specified  by the Bank in such
notice,  and, to the extent that LIBOR Loans are so made as (or converted  into)
Prime Rate Loans,  all payments of principal which would otherwise be applied to
the Bank's LIBOR Loans shall be applied  instead to its Prime Rate Loans. If any
LIBOR Loan is converted to a Prime Rate Loan  pursuant to this Section  prior to
the last day of the Interest  Period with  respect to such LIBOR Loan,  Borrower
shall pay to the Bank all amounts  required to be paid  pursuant to Section 5.05
hereof.

            Section 5.05.  Certain Compensation.

            (a) Borrower shall pay to the Bank such reasonable amount or amounts
as shall be sufficient (in the reasonable  opinion of the Bank) to compensate it
for any loss, cost or expense which the Bank determines is attributable to:

                  (i)  Borrower's  prepayment of a LIBOR Loan (whether by reason
of the  mandatory  or  voluntary  prepayment  provisions  of this  Agreement  or
otherwise) or failure to pay principal or interest on a LIBOR Loan when due; or

                  (ii) Borrower's failure to borrow,  convert into or continue a
LIBOR Loan on the date  specified  therefor in the  relevant  notice given under
Section 4.01; or


                                   - 18 -

<PAGE>



                  (iii)  Borrower's  failure  to prepay a LIBOR Loan on the date
specified therefor in the relevant notice under Section 4.02.

            (b) A  reasonable  determination  by the  Bank  of  amounts  payable
pursuant to this Section shall be conclusive  absent manifest error. In the case
of  prepayments  of LIBOR  Loans,  Borrower  shall pay to the Bank a  prepayment
premium  equal to any costs,  loss or expense  that it may sustain or incur as a
result of Borrower's  prepaying the LIBOR Loan,  including  (but not limited to)
the Bank's loss of  anticipated  interest  on such LIBOR Loan at the  applicable
interest rate, or any interest or other charge payable by the Bank to others who
provided  funds to the Bank to enable it to make or maintain such LIBOR Loan. In
addition,  Borrower  shall  reimburse  the  Bank  for all  administrative  costs
incurred by the Bank as a result of such prepayment.

ARTICLE 6.  CONDITIONS PRECEDENT.

            Section 6.01.  Conditions to the Initial Borrowings  Hereunder.  The
obligations  of the Bank to make the Loans  constituting  the initial  borrowing
under  Section  2.01 and the Term Loan under  Section  3.01,  are subject to the
conditions precedent that:

            (a) the Bank shall have received on or before the date of such Loans
each of the following,  in form and substance  satisfactory  to the Bank and its
counsel:

                  (i)  the Revolving Credit Note and the Term Loan Note, duly 
executed by Borrower;

                  (ii) a certificate of the Secretary or Assistant  Secretary of
Borrower  and of each  Guarantor,  dated  the  Closing  Date,  attesting  to all
corporate action taken by Borrower or such Guarantor,  including  resolutions of
its Board of Directors  authorizing  the execution,  delivery and performance of
the Loan  Documents  and each other  document to be  delivered  pursuant to this
Agreement  and  certifying  the names and true  signatures  of the  officers  of
Borrower or each Guarantor  executing the Loan Documents and the other documents
to be delivered by Borrower or such  Guarantor  under this Agreement and stating
that such  resolutions  have not been  amended,  modified,  revoked or rescinded
since the date of such certificate;

                  (iii)  certified  copies of the  certificate  or  articles  of
incorporation and the by-laws of Borrower or each Guarantor,  with a certificate
of the Secretary or Assistant  Secretary of Borrower and each Guarantor  stating
that  the  corporate  documents  thereby  certified  have not  been  amended  or
modified, as of the date of such certificate;

                  (iv) a certificate of a duly  authorized  officer of Borrower,
dated the Closing  Date,  stating that the  representations  and  warranties  in
Article 7 are true and  correct  on such  date as though  made on and as of such
date (unless made as of a specific  date earlier than the date hereof,  in which
case they shall be true and correct as of such  earlier  date) and that no event
has occurred and is continuing which constitutes a Default or Event of Default;

                                   - 19 -

<PAGE>




                  (v)  the Guaranty duly executed by each of the Guarantors;

                  (vi) the Bank shall have received  satisfactory  evidence that
all Debt to  Chugai  Boyeki  Company  Limited  and IBJ  Schroder  Bank and Trust
Company has been paid;

                  (vii) such duly  executed  UCC-3  Termination  Statements  (or
equivalents)  as are  necessary  to terminate  existing  Liens (other than Liens
permitted hereby) on the assets of Borrower;

                  (viii) a favorable opinion of counsel for Borrower,  dated the
Closing  Date,  in  substantially  the form of  Exhibit  C and as to such  other
matters as the Bank may reasonably request;

                  (ix)  satisfactory  evidence  that  Borrower  and  each of the
Guarantors is duly  organized,  validly  existing and in good standing under the
laws of its jurisdiction of incorporation;

                  (x) Borrower's  consolidated forecasted balance sheets showing
its projected  financial condition for the fiscal years ended September 30, 1998
and 1999;

                  (xi) The Bank's year 2000 credit risk assessment worksheet, in
substance and form reasonably satisfactory to the Bank; and

                  (xii) such other documents,  instruments,  approvals, opinions
and evidence of compliance with the terms hereof as the Bank may require.

            (b) Borrower  shall have paid or caused to be paid all fees required
to be paid hereunder or in connection herewith and all accrued fees and expenses
of the Bank in connection with the  preparation,  execution and delivery of this
Agreement, and the other Loan Documents and the consummation of the transactions
contemplated thereby.

            (c) Borrower and the  Guarantors  shall have  obtained all consents,
permits and approvals  required in connection  with the execution,  delivery and
performance  by Borrower  and the  Guarantors  of their  respective  obligations
hereunder  and under the other Loan  Documents  and such  consents,  permits and
approvals shall continue in full force and effect.

            (d) All legal matters in  connection  with this  financing  shall be
satisfactory to the Bank and its counsel.

            Section 6.02.  Conditions to All Borrowings.  The obligations of the
Bank to make any Loan (including the initial  Revolving Credit Loan and the Term
Loan) hereunder shall be subject to the further conditions precedent that on the
date of such Loan:

            (a)   the following statements shall be true:

                                   - 20 -

<PAGE>




                  (i) the representations and warranties  contained in Article 7
are true and correct on and as of the date of such Loan as though made on and as
of such  date  (unless  such  representations  and  warranties  are made as of a
specific  earlier  date in which case they shall be true and  correct as at such
date);

                  (ii) no  Default  or  Event of  Default  has  occurred  and is
continuing, or would result from such Loan; and

                  (iii) no material  adverse  change shall have  occurred in the
business,  financial  condition or operations of Borrower  since the date of the
most recent financial  statements of Borrower delivered to the Bank hereunder or
in connection herewith; and

            (b) the Bank  shall  have  received  a Notice of  Borrowing  for any
Revolving Credit Loan; and

            (c) the Bank shall have received such approvals, opinions, documents
or instruments as the Bank may have reasonably requested.

            Section 6.03.  Deemed  Representations.  Unless  Borrower  otherwise
notifies the Bank prior to any borrowing  hereunder,  the acceptance by Borrower
of the proceeds of any Loan shall constitute a representation  and warranty that
the statements  contained in Section 6.02(a) are true and correct as of the date
of such Loan.

ARTICLE 7.  REPRESENTATIONS AND WARRANTIES.

            Borrower hereby represents and warrants that:

            Section 7.01.  Incorporation,  Good Standing and Due  Qualification;
Compliance with Law. Each of Borrower and the Guarantors is duly formed, validly
existing  and in  good  standing  under  the  laws  of the  jurisdiction  of its
formation,  has the power and  authority  to own its assets and to transact  the
business  in which it is now  engaged or  proposed  to be  engaged,  and is duly
qualified as a foreign  corporation (or other entity) and in good standing under
the laws of each other  jurisdiction  in which such  qualification  is  required
except where the failure to so qualify  and/or be in good standing  could not in
any case or in the aggregate,  have a material adverse effect on the operations,
business, property or financial condition of any of Borrower or any Guarantor or
on its respective ability to perform its respective  obligations  hereunder.  In
addition,  each of Borrower and the  Guarantors is in compliance  with all laws,
treaties, rules or regulations, or determination of an arbitration or a court or
other governmental  authority,  in each case applicable to or binding upon it or
any of its property or to which it or any of its property is subject,  except to
the  extent  that the  failure  to so comply  could  not,  in any case or in the
aggregate, have a material adverse effect on the operations,  business, property
or financial  condition of Borrower and the  Guarantors  or on their  ability to
perform their obligations under the Loan Documents.


                                   - 21 -

<PAGE>



            Section 7.02.  Power and  Authority;  No Conflicts.  The  execution,
delivery and  performance  by each of Borrower and each of the Guarantors of the
Loan Documents have been duly authorized by all necessary  action and do not and
will not (a) require any consent or approval of its stockholders or other equity
holders that has not been obtained, (b) contravene its charter, by-laws or other
governing  instruments,  (c)  violate  any  provision  of, or require any filing
(other than filings  contemplated  hereby  and/or by the other Loan  Documents),
registration,  consent or approval under, any law, rule, regulation  (including,
without  limitation,  the  provisions of Regulation G, T, U or X of the Board of
Governors of the Federal Reserve System as in effect from time to time),  order,
writ, judgment,  injunction,  decree, determination or award presently in effect
having applicability to Borrower or such Guarantor, (d) result in a breach of or
constitute  a default or require  any  consent  under any  indenture  or loan or
credit agreement or any other  agreement,  lease or instrument to which Borrower
or such  Guarantor is a party or by which any of its  properties may be bound or
affected,  (e) result in, or require,  the creation or  imposition  of any Lien,
upon or with respect to any of the properties now owned or hereafter acquired by
Borrower or such  Guarantor,  or (f) cause  Borrower or such  Guarantor to be in
default under any such rule,  regulation,  order,  writ,  judgment,  injunction,
decree,  determination  or  award  or any such  indenture,  agreement,  lease or
instrument.

            Section 7.03. Legally Enforceable Agreements. Each Loan Document is,
or when  delivered  under this  Agreement  will be, a legal,  valid and  binding
obligation of Borrower or each  Guarantor  party  thereto,  enforceable  against
Borrower or such Guarantor in accordance with its terms.

            Section 7.04. Litigation. There are no actions, suits or proceedings
pending or to Borrower's knowledge,  threatened against or affecting Borrower or
any of the Guarantors or any of their respective  Subsidiaries before any court,
governmental  agency  or  arbitrator,  which  could,  in any one  case or in the
aggregate, adversely affect the financial condition,  operations,  properties or
business  of  Borrower  and the  Guarantors  or their  ability to perform  their
respective obligations under the Loan Documents.

            Section 7.05. Financial  Statements.  The consolidated balance sheet
of  Borrower  and its  Subsidiaries  as at  September  30,  1997 and the related
consolidated  income  statement  and  statement of cash flow of Borrower and its
Subsidiaries  for the  fiscal  year  then  ended,  and the  accompanying  notes,
together  with the  opinion  thereon,  of KPMG  Peat  Marwick  LLP,  independent
certified public  accountants (the  "Auditor"),  and the consolidated  financial
statements  for the six month period ended March 31, 1998,  copies of which were
delivered to the Bank,  fairly present the consolidated  financial  condition of
Borrower and its Subsidiaries as at such dates and the  consolidated  results of
the operations of Borrower and its  Subsidiaries for the periods covered by such
statements,  all in accordance with GAAP  consistently  applied.  As of the date
hereof,  there are no  liabilities  of Borrower and its  Subsidiaries,  fixed or
contingent,  which  are  material  but  are  not  reflected  in  such  financial
statements  or in the notes  thereto,  other  than  liabilities  arising  in the
ordinary course of business since March 31, 1998 and the liabilities  created by
this  Agreement.  There has been no  material  adverse  change in the  condition
(financial or otherwise), business, operations or, to the knowledge of Borrower,
prospects of any

                                   - 22 -

<PAGE>



of  Borrower  or the  Guarantors  since  the date of the most  recent  financial
statements delivered to the Bank and the Closing Date. With respect to any Loans
made after the Closing Date,  Borrower shall represent and warrant that from the
time  that  Borrower  has  delivered  to the  Bank  its  most  recent  financial
statements  under  Section  8.08 and the date of such  Loan,  there  has been no
material  adverse change in the condition  (financial or  otherwise),  business,
operations  or, to the  knowledge  of  Borrower,  prospects  of Borrower and the
Guarantors.

            Section  7.06.  Ownership  and  Liens.  Each  of  Borrower  and  the
Guarantors has title to, or valid leasehold  interests in, all of its properties
and assets, real and personal, reflected in the financial statements referred to
in Section 7.05 (other than any properties or assets  disposed of since the date
of such financial statements as no longer used or useful in the conduct of their
respective  business  or as have  been  disposed  of in the  ordinary  course of
business),  and none of the  properties  and  assets  owned by  Borrower  or the
Guarantors, or any of them, and none of their leasehold interests, is subject to
any Lien, except as disclosed in Schedule I or as may be permitted hereunder.

            Section 7.07.  Taxes.  Each of Borrower and the Guarantors has filed
all tax  returns  (federal,  state and  local)  required  to be  filed.  Each of
Borrower  and the  Guarantors  has paid  when  due all  taxes,  assessments  and
governmental  charges and levies shown thereon to be due, including interest and
penalties,  other than taxes,  assessments and  governmental  charges and levies
being  contested in good faith by  appropriate  proceedings  and with respect to
which adequate  reserves in conformity with GAAP shall have been provided on the
books of Borrower or the Guarantors, as the case may be.

            Section  7.08.  ERISA.  Each of Borrower  and the  Guarantors  is in
compliance in all material respects with all applicable  provisions of ERISA. No
Reportable  Event has occurred  with respect to any Plan, no notice of intent to
terminate  a  Plan  has  been  filed  nor  has  any  Plan  been  terminated,  no
circumstance  exists  which  constitutes  grounds  under  Section  4042 of ERISA
entitling the PBGC to institute  proceedings to terminate,  or appoint a trustee
to administer, a Plan, nor has the PBGC instituted any such proceedings, none of
Borrower nor its ERISA  Affiliates has completely or partially  withdrawn  under
Sections  4201 or 4204 of ERISA from a  Multiemployer  Plan and each of Borrower
and each of its ERISA Affiliates has met its minimum funding  requirements under
ERISA  with  respect  to all of its  Plans  and  there  are no  Unfunded  Vested
Liabilities.  None of  Borrower  nor  its  ERISA  Affiliates  has  incurred  any
liability  to the PBGC  under  ERISA,  other than to make  contributions  in the
ordinary  course and other than contingent  liabilities  that would arise on the
termination  of any Plan (no  such  termination  being  reasonably  foreseen  by
Borrower).

            Section 7.09.  Subsidiaries and Ownership of Stock. Schedule II is a
complete  and  accurate  list  of the  Subsidiaries  of  Borrower,  showing  the
jurisdiction  of  incorporation  or  organization  of  each  Subsidiary  and the
percentage of Borrower's ownership of the outstanding stock or other interest of
each such Subsidiary.


                                   - 23 -

<PAGE>



            Section 7.10.  Credit  Arrangements.  Schedule III is a complete and
correct list of all credit agreements,  indentures,  purchase agreements outside
the ordinary course of Borrower's business, guaranties, Capital Leases and other
investments, agreements and arrangements in effect on the date of this Agreement
providing  for or  relating  to  extensions  of  credit  to  Borrower  or to the
Guarantors or to any of them  (including  agreements  and  arrangements  for the
issuance of letters of credit or for  acceptance  financing) in respect of which
Borrower,  the  Guarantors  or  any  of  them  is  in  any  manner  directly  or
contingently obligated. Schedule III shows the maximum principal or face amounts
of the  credit  in  question,  outstanding  and which  can be  outstanding,  are
correctly  stated,  and all Liens of any  nature  given or agreed to be given as
security  therefor are  correctly  described  or indicated in such  Schedule and
Schedule I.

            Section  7.11.  Operation  of  Business.  Each of Borrower  and each
Guarantor  possesses  all  material  licenses,  permits,  franchises,   patents,
copyrights,  trademarks  and trade names,  or rights  thereto,  to conduct their
business as now  conducted  and as  presently  proposed to be  conducted  and to
Borrower's  best  knowledge,  none of Borrower nor any of the  Guarantors  is in
violation of any valid rights of others with respect to any of the foregoing.

            Section  7.12.  Hazardous  Substances.  Each  of  Borrower  and  the
Guarantors is in compliance  with all  Environmental  Laws, and has obtained all
necessary   licenses  and  permits   required  to  be  issued  pursuant  to  any
Environmental  Law. None of Borrower nor any of the  Guarantors has received any
written notice or communication from any governmental agency with respect to any
Hazardous  Substance  relative  to  its  operations,  property  or  acts  or any
investigation,  demand or request pursuant to or enforcing any Environmental Law
relating to it or its operations,  and no such  investigation  is pending or, to
the knowledge of Borrower, threatened.

            Section 7.13. Compliance with Loans and Judgments. Borrower and each
Subsidiary are in compliance,  in all material  respects,  with all laws, rules,
regulations,  orders  and  decrees  which  are  applicable  to  Borrower  or its
Subsidiaries, or to any of their respective properties. Each of Borrower and the
Guarantors  has  satisfied  all  judgments  and none of Borrower  nor any of the
Guarantors is in default with respect to any judgment, writ, injunction, decree,
rule or regulation  of any court,  arbitrator  or federal,  state,  municipal or
other   governmental   authority,   commission,   board,   bureau,   agency   or
instrumentality, domestic or foreign.

            Section 7.14. No Defaults on Other  Agreements.  Except as disclosed
on Schedule  IV, none of Borrower  nor any of the  Guarantors  is a party to any
indenture,  loan  or  credit  agreement  or any  lease  or  other  agreement  or
instrument or subject to any charter or corporate restriction which would in any
case or in the aggregate  have an adverse effect on its ability to carry out its
obligations under the Loan Documents. None of Borrower nor any of the Guarantors
is in default in any respect in the  performance,  observance or  fulfillment of
any of the  obligations,  covenants or conditions  contained in any agreement or
instrument  material to its  business to which it is a party  except  where such
default would not, in any case or in the

                                   - 24 -

<PAGE>



aggregate,  have a material  and  adverse  effect on the  business,  properties,
assets,  operations  or condition,  financial or otherwise,  of Borrower and the
Guarantors  or on their  ability to  perform  their  obligations  under the Loan
Documents.

            Section 7.15. Labor Disputes and Force Majure.  Neither the business
nor the properties of Borrower or any of the Guarantors is affected by any fire,
explosion,  accident,  strike, lockout or other labor dispute,  drought,  storm,
hail, earthquake, embargo, force majure or of the public enemy or other casualty
(whether or not covered by insurance),  materially and adversely  affecting such
business or properties or the operations of Borrower and the Guarantors or their
ability to perform their obligations under the Loan Documents.

            Section  7.16.  Governmental  Regulation.  None of  Borrower  or the
Guarantors is subject to regulation under the Public Utility Holding Company Act
of 1935, the  Investment  Company Act of 1940 or any other statute or regulation
limiting its ability to incur  indebtedness  for money borrowed as  contemplated
hereby.

            Section 7.17.  Partnerships.  None of Borrower or the Guarantors is 
a partner in any partnership or a member of any joint venture or limited 
liability company, except as indicated in Schedule II.

            Section  7.18.  No  Forfeiture.  None  of  Borrower  nor  any of the
Guarantors  is engaged in or  proposes  to be engaged in any  unlawful  activity
which  is  reasonably  likely  to  result  in a  Forfeiture  Proceeding  and  no
Forfeiture  Proceeding  against  any of  them  is  pending  or,  to the  best of
Borrower's knowledge, threatened.

            Section 7.19.  Disclosure.  This  Agreement,  each Loan Document and
each other document, certificate, exhibit, report or written statement furnished
to the Bank by or on behalf of Borrower or for use in connection with the Loans,
do not contain any untrue statement of material fact or omit to state a material
fact necessary to make the statement  contained herein or therein not misleading
under the circumstances in which they were made.

            Section 7.20.  Year 2000  Compliance.  By December 31, 1998,  all of
Borrower's  principal  operating  computer  hardware and software  will have the
ability to (a)  consistently  handle date information  before,  during and after
January 1, 2000,  including but not limited to accepting  date input,  providing
date output and  performing  calculations  on dates or  portions  of dates,  (b)
function  accurately  in  accordance  with the  specifications  of such computer
hardware or software and without interruption  before,  during and after January
1, 2000, without any change in operations  associated with the advent of the new
century,  (c)  respond  to  two-digit  date  input  in a way that  resolves  any
ambiguity as to century in a disclosed, defined and predetermined manner and (d)
store and provide output of date  information in ways that are unambiguous as to
century. Any reprogramming or other corrective  modifications required to permit
the proper functioning  beginning immediately after December 31, 1999 of (i) the
computer systems of Borrower and its Subsidiaries and (ii) equipment  containing
embedded microchips  (including systems and equipment supplied by others or with
which systems of

                                   - 25 -

<PAGE>



Borrower and its Subsidiaries interface) and the testing of all such systems and
equipment, as so reprogrammed, will be completed by December 31, 1998.

ARTICLE 8.  AFFIRMATIVE COVENANTS.

            So long as any Note shall  remain  unpaid or the Bank shall have any
obligations under this Agreement,  Borrower shall and shall cause the Guarantors
to:

            Section 8.01. Maintenance of Existence. Except as otherwise provided
in this  Agreement,  preserve  and  maintain its  corporate  existence  and good
standing  in the  jurisdiction  of its  incorporation,  and  qualify  and remain
qualified  as  a  foreign   corporation  in  each  jurisdiction  in  which  such
qualification is required.

            Section 8.02.  Conduct of Business.  Continue to engage in its 
current business or related businesses.

            Section 8.03. Maintenance of Properties. Maintain, keep and preserve
all of its properties (tangible and intangible)  necessary to the conduct of its
business in good working order and condition, ordinary wear and tear excepted.

            Section 8.04.  Maintenance of Records.  Keep records and books of 
account, in which complete entries will be made in accordance with GAAP.

            Section 8.05.  Maintenance  of Insurance.  Maintain  insurance  with
financially  sound and reputable  insurance  companies or  associations  in such
amounts and covering such risks as are usually  carried by companies  engaged in
the same or a similar business and similarly situated.

            Section 8.06.  Compliance with Laws.  Comply in all respects with 
all applicable laws, rules, regulations and orders.

            Section 8.07.  Right of Inspection.  At any reasonable time and from
time to time,  upon reasonable  notice during normal business hours,  permit the
Bank or any agent or  representative  thereof,  to examine  and make  copies and
abstracts from the records and books of account of, and visit the properties of,
such Person,  to discuss the affairs,  finances and accounts of such Person with
any of their  respective  officers and directors  and such Person's  independent
accountants.  Once yearly at Borrower's expense, and if more frequently,  at the
Bank's sole cost, the Bank or its  representatives  may conduct such  collateral
and other audits as the Bank deems necessary.

            Section 8.08.  Reporting Requirements.  Furnish directly to each of 
the Bank:

            (a) as soon as  available  and in any event within 90 days after the
end of each fiscal year of Borrower,  consolidating  and consolidated  financial
statements of Borrower and its

                                   - 26 -

<PAGE>



consolidated  Subsidiaries  which shall include a consolidating and consolidated
balance sheet of Borrower and its Subsidiaries as of the end of such fiscal year
and a  consolidating  and  consolidated  income  statement and statement of cash
flows of such  entities for such fiscal year,  stating in  comparative  form the
respective consolidating and consolidated figures for the corresponding date and
period in the prior  fiscal  year and all  prepared  in  accordance  with  GAAP,
accompanied  by an  unqualified  opinion  thereon  acceptable to the Bank by the
Auditor,  which opinion neither  includes an exception as to adherence with GAAP
nor contains a disclaimer;

            (b) as soon as  available  and in any event within 45 days after the
end of each of the first  three  quarters of each  fiscal  year of  Borrower,  a
consolidating and consolidated balance sheet of Borrower and its Subsidiaries as
of the end of such quarter and a consolidating and consolidated income statement
and  statements of cash flows of such entities for the period  commencing at the
end of the previous fiscal year and ending with the end of such quarter,  all in
reasonable  detail and stating in comparative form the respective  consolidating
and consolidated  figures for the corresponding  date and period in the previous
fiscal year and all  prepared  in  accordance  with GAAP and  attested to by the
president or chief financial officer of Borrower;

            (c)  simultaneously  with the delivery of the  financial  statements
referred  to in (a) and (b)  above,  a  certificate  of the  president  or chief
financial  officer of Borrower (i) certifying  that to the best of his knowledge
no Default or Event of Default has occurred and is  continuing  or, if a Default
or Event of Default has occurred and is continuing, a statement as to the nature
thereof and the action which is proposed to be taken with respect  thereto,  and
(ii) with computations  demonstrating compliance with the covenants contained in
Article 10;

            (d) within 30 days after the  delivery of the  financial  statements
referred  to in (a)  above,  annual  forecasts  and  Borrower's  budget  for the
upcoming  fiscal  year,  with a comparison  of actual  results to budget for the
fiscal year then ended;

            (e) promptly upon receipt thereof,  a copy of the management letter,
if any, prepared by the Auditor;

            (f) on or prior to the  fifteenth day of each  calendar  quarter,  a
schedule of accounts receivable of the Company and its Subsidiaries certified by
the President or Chief Financial  Officer and current as of the last Banking Day
of the preceding month, which shall include accounts  receivable summary agings,
all in form and in such detail satisfactory to the Bank;

            (g) on or prior to the  fifteenth day of each  calendar  quarter,  a
schedule  of  inventory  of the Company and its  Subsidiaries  certified  by the
President or Chief  Financial  Officer and current as of the last Banking Day of
the preceding  month,  which shall contain a breakdown of the inventory by type,
amount and location and such other information reasonably requested by the Bank;


                                   - 27 -

<PAGE>



            (h) on each  January 2 and July 1 while any Loan is  outstanding,  a
certificate  from the President or Chief Financial  Officer  certifying that the
lien  search  report  obtained by the Bank (at  Borrower's  expense) on or about
those dates is accurate and complete;

            (i)  promptly  after  Borrower  becomes  aware  of the  commencement
thereof,  notice of all  actions,  suits,  and  proceedings  before any court or
governmental department,  commission,  board, bureau, agency or instrumentality,
domestic or foreign,  involving claims of $50,000 or more affecting Borrower, or
any of its  Subsidiaries,  including,  without  limitation,  any such proceeding
relating to any alleged violation of any Environmental Law;

            (j) as soon as possible  and in any event within five days after the
occurrence of each Default or Event of Default,  a written notice specifying and
describing in reasonable  detail such Default or Event of Default and describing
in  reasonable  detail the action which is proposed to be taken by Borrower with
respect thereto;

            (k)  promptly  after the  commencement  thereof  or  promptly  after
Borrower knows of the  commencement or threat thereof,  notice of any Forfeiture
Proceeding;

            (l)  promptly  after  submission,   all  documents  and  information
furnished to any  government  or  regulatory  agency,  other than  documents and
information prepared in the normal course of business, but including information
which  relates to any  adverse  action  proposed  to be taken by such  agency or
information which, if not so submitted, would result in the taking of an adverse
action by such agency;

            (m) as soon as possible  and in any event  within five  Banking Days
after Borrower knows that any of the events or conditions  specified  below with
respect to any Plan or  Multiemployer  Plan have occurred or exist,  a statement
signed by a chief financial officer of Borrower setting forth details respecting
such event or  condition  and the action,  if any,  which  Borrower or the ERISA
Affiliate  propose  to take with  respect  thereto  (and a copy of any report or
notice  required  to be  filed  with or given  to PBGC by  Borrower  or an ERISA
Affiliate with respect to such event or condition):

                  (i) any  reportable  event,  as defined in Section  4043(b) of
ERISA and the regulations issued thereunder, with respect to a Plan, as to which
PBGC has not by regulation  waived the  requirement of Section  4043(a) of ERISA
that it be notified  within 30 days of the  occurrence  of such event  (provided
that a failure to meet the minimum  funding  standard of Section 412 of the Code
or Section 302 of ERISA shall be a reportable  event  regardless of the issuance
of any waivers in accordance with Section 412(d) of the Code);

                  (ii) the  filing  under  Section  4041 of ERISA of a notice of
intent to terminate any Plan or the termination of any Plan;

                  (iii) the  institution  by PBGC of  proceedings  under Section
4042 of ERISA  for the  termination  of,  or the  appointment  of a  trustee  to
administer, any Plan, or the receipt by

                                   - 28 -

<PAGE>



Borrower or any ERISA Affiliate, of a notice from a Multiemployer Plan that such
action has been taken by PBGC with respect to such Multiemployer Plan;

                  (iv) the  complete  or partial  withdrawal  by Borrower or any
ERISA Affiliate  under Section 4201 or 4204 of ERISA from a Multiemployer  Plan,
or  the  receipt  by  Borrower,  or  any  ERISA  Affiliate,  of  notice  from  a
Multiemployer  Plan  that it is in  reorganization  or  insolvency  pursuant  to
Section 4241 or 4245 of ERISA or that it intends to terminate or has  terminated
under Section 4041A of ERISA; and

                  (v) the  institution  of a  proceeding  by a fiduciary  or any
Multiemployer  Plan against  Borrower or any ERISA  Affiliate to enforce Section
515 of ERISA, which proceeding is not dismissed within 30 days;

            (n)  promptly,  and in any event within five business days after the
sending or filing thereof, copies of all proxy statements, financial statements,
and reports which Borrower sends to its stockholders, and copies of all regular,
periodic and special  reports and all  registration  statements  which  Borrower
files with the  Securities  and Exchange  Commission  or any other  governmental
authority, or with any national securities exchange;

            (o) such other  information  respecting the condition or operations,
financial or otherwise, of Borrower, or any Guarantor, as the Bank may from time
to time reasonably request.

            Section 8.09.  Payment of Obligations.  Pay, discharge or otherwise 
satisfy at or before maturity or before they become delinquent, as the case may
be, all material Debt.

            Section  8.10.  Payment of Taxes.  Pay and  discharge  promptly  all
taxes,  assessments and government charges or levies imposed upon it or upon its
income and profits,  or upon any of its property,  real,  personal or mixed,  or
upon any part  thereof,  before the same shall become in default,  and all other
material obligations  (including lawful claims for labor, materials and supplies
which,  if unpaid,  might become a Lien) except that neither the Company nor any
Guarantor  shall be required to pay any such tax,  assessment,  charge,  levy or
claim so long as the  validity  thereof  shall  be  contested  in good  faith by
appropriate  proceedings  and  there  shall  have  been set  aside on its  books
adequate  reserves  determined in accordance  with GAAP with respect to any such
tax,  assessment,  charge, levy or claim so contested,  provided that, except as
provided in Section  9.02,  the Company  and each  Guarantor  shall pay all such
taxes, assessments,  charges, levies or claims promptly if any Lien has attached
as security therefor.


            Section  8.11.  Acquisitions.  Prior to entering  into any letter of
intent,  agreement or other commitment relating to any Acquisition,  furnish the
Bank with notice of same and with such  information  relating to the Acquisition
as Borrower  possesses at the time it provides  notice to the Bank and which the
Bank may reasonably request.


                                   - 29 -

<PAGE>



ARTICLE 9.  NEGATIVE COVENANTS.

            So long as any Note shall  remain  unpaid or the Bank shall have any
obligations  under this  Agreement,  Borrower shall not and shall not permit any
Guarantor to:

            Section 9.01.  Debt and Guaranties.

            (a)  Create,  incur,  assume  or  allow  to  exist,  or  permit  any
Guarantors to create, incur, assume or allow to exist any Debt, except:

                  (i)  Debt arising under this Agreement or the Notes;

                  (ii)  Debt described in Schedule III;

                  (iii)  Subsidiaries  may incur Debt of up to  $2,000,000,  but
whenever and to the extent that such Debt exceeds $500,000 in the aggregate, the
Revolving Credit Commitment shall be reduced on a dollar for dollar basis by the
amount of such excess;

                  (iv) Debt incurred in connection with operating leases entered
into by Borrower, the Guarantors, or any of them, consistent with past practices
or in the ordinary course of business; and

                  (v)  Debt of  Borrower,  or the  Guarantors,  or any of  them,
secured by purchase money Liens permitted by Section 9.02.

            (b)  Guaranty,  endorse,  become  surety for or otherwise in any way
become or be responsible  for the Debt or obligations of any Person,  whether by
agreement to maintain capital,  equity,  net worth or solvency of any Person, by
agreement  to purchase or  discharge  the Debt of any Person,  or  agreement  to
purchase merchandise,  materials,  supplies or other property, if such agreement
provides that payment shall be made whether or not delivery of such merchandise,
materials, supplies or other property is ever made or tendered except:

                  (i)  Borrower's guarantee up to (pound)1,000,000 of Debt of 
Vicon U.K. and any other guarantees executed prior to the date hereof, all as
described on Schedule V;

                  (ii) Borrower may  guarantee  Debt of  Subsidiaries  which are
Guarantors of up to a total of  $2,000,000,  but whenever and to the extent such
guarantees relate to Guarantor Debt that exceeds $500,000 in the aggregate,  the
Revolving Credit Commitment shall be reduced on a dollar for dollar basis by the
amount of such excess;

                  (iii) endorsements of negotiable instruments for collection or
deposit in the ordinary course of business; and


                                   - 30 -

<PAGE>



                  (iv) guarantees under this Agreement or of Debt of Borrower or
any Guarantor owing to the Bank.

            Section 9.02.  Liens.  Create,  incur,  assume or allow to exist, or
permit any of the  Guarantors to create,  incur,  assume or allow to exist,  any
Lien,  upon or with  respect to any of its  properties,  now owned or  hereafter
acquired,  or enter into any agreement,  contract or undertaking with any Person
not to create, incur, assume or allow any such Lien to exist, except:

            (a) Any negative pledge agreement with the Bank or any Liens in 
favor of the Bank;

            (b) Liens for taxes or  assessments or other  government  charges or
levies  if not yet due and  payable  or if due and  payable  if they  are  being
contested in good faith by  appropriate  proceedings  and for which  appropriate
reserves are maintained in conformity with GAAP;

            (c)  Liens   imposed  by  law,  such  as   mechanic's,   supplier's,
materialmen's, landlord's, warehousemen's and carrier's Liens, and other similar
Liens,  securing  obligations  incurred in the ordinary course of business which
are not past due for more than 30 days and which total less than $50,000;

            (d) Liens under workers' compensation unemployment insurance, social
security or similar legislation (other than ERISA);

            (e) judgment and other  similar  Liens  arising in  connection  with
court proceedings that have been in existence for fewer than 30 days after entry
of the judgment or the execution or other  enforcement  of which is  effectively
stayed,  and the claims secured  thereby are being actively  contested,  in good
faith and by appropriate  proceedings,  or which relate to judgments which, when
aggregated  with all other  judgments  secured  by such  Liens,  total less than
$50,000; and

            (f)  purchase  money Liens on any property  heretofore  or hereafter
acquired or the assumption of any Lien on property  existing at the time of such
acquisition, or a Lien incurred in connection with any conditional sale or other
title  retention  agreement or a Capital Lease;  provided that such liens attach
only to the property as acquired and do not extend to any additional property of
Borrower.

            Section  9.03.   Investments  and  Advances.   Make  or  permit  any
Subsidiary  to make any loan or advance to any Person,  or  purchase,  redeem or
otherwise  acquire,  or  permit  any such  Subsidiary  to  purchase,  redeem  or
otherwise acquire any capital stock, assets, obligations or other securities, or
make any capital  contribution to otherwise invest in or acquire any interest in
any Person  (including,  without  limitation,  any Borrower or any Subsidiary or
Affiliate of any Borrower), except:

                                   - 31 -

<PAGE>




            (a)  obligations  issued or guaranteed  by states or  municipalities
within  the  United  States of  American  and rated at least A-1 by  Standard  &
Poor's;

            (b) obligations issued or guaranteed by the United States of America
or any  agency  or  subdivision  thereof,  the  payment  or  guarantee  of which
constitutes a full faith and credit obligation of the United States of America;

            (c) certificates of deposit, time deposits,  Eurodollar certificates
of deposit, bankers acceptances and other money market instruments issued by any
bank,  trust company or financial  institution  organized  under the laws of the
United States of America or any state (or in the case of Eurodollar certificates
of deposit,  a branch of any such bank, trust company or financial  institution)
having capital and surplus in an aggregate amount not less than $200,000,000 and
with such instrument rated at least A-1 by Standard & Poor's;

            (d)  commercial  paper  rated at least  Prime-1 by Moody's  Investor
Services or A-1 by Standard & Poor's;

            (e) repurchase  agreements entered into with any bank, trust company
or other financial  institution organized under the laws of the United States of
America or any state having capital and surplus in an aggregate  amount not less
than  $200,000,000  and which  are  fully  secured  by  obligations  of the type
described in Section 9.03(b);

            (f) Acquisitions permitted pursuant to Section 9.07 hereof;

            (g) Investments of Borrower in a Domestic Subsidiary, provided it is
a Guarantor;

            (h)  Borrower's  investments  or  advances  in  amounts  of up to an
aggregate of $750,000 in Affiliates which are not Domestic Subsidiaries; and

            (i)  Purchases of  Borrower's  common stock in  connection  with the
exercise of options granted under Borrower's employee stock option plans.

            Section  9.04.  Sale of Assets.  Sell,  lease,  assign,  transfer or
otherwise  dispose of, or permit any of the Guarantors to sell,  lease,  assign,
transfer or  otherwise  dispose of, any of its now owned or  hereafter  acquired
assets  (including,  without  limitation,  shares of stock of any  Subsidiary or
indebtedness  due from any  Subsidiary,  receivables  and  leasehold  interests)
except for (i) assets  disposed of as no longer used or useful in the conduct of
their respective  business or as have been disposed of in the ordinary course of
business  consistent  with  Borrower's  past practice,  (ii) transfers of assets
between or among  Borrower  and  Subsidiaries  of  Borrower,  provided  all such
Subsidiaries  are Guarantors or (iii) sales of inventory in the ordinary  course
of business.


                                   - 32 -

<PAGE>



            Section  9.05.   Transactions   with  Affiliates.   Enter  into  any
transaction,  including,  without limitation,  the purchase, sale or exchange of
property or the  rendering of any service,  with any  Affiliate or permit any of
the Guarantors to enter into any transaction, including, without limitation, the
purchase, sale or exchange of property or the rendering of any service, with any
Affiliate,  except as permitted under this Agreement or as provided  below,  and
except in the ordinary course of and pursuant to the reasonable  requirements of
Borrower's or such  Guarantors  business and upon fair and reasonable  terms not
materially  less  favorable to Borrower or such Guarantor than would be obtained
in a  comparable  arm's  length  transaction  with a  Person  not an  Affiliate.
Borrower may sell  inventory to Affiliates at favorable  pricing in the ordinary
course of business,  provided the  aggregate of such sales  transactions  in any
fiscal quarter are not priced at less than Borrower's cost of goods sold of such
inventory.

            Section  9.06.  Mergers.  Except as permitted in Section  9.07,  and
except for  mergers  of any  Subsidiary  with and into  either  Borrower  or any
Subsidiary  which is at such time a Guarantor,  merge or  consolidate  with,  or
sell, assign,  lease or otherwise dispose of (whether in one transaction or in a
series of  transactions)  all or  substantially  all of its assets  (whether now
owned or hereafter  acquired) to any Person, or acquire all or substantially all
of the assets or the  business of any Person (or enter into any  agreement to do
any of the foregoing), or permit any of the Guarantors to do so.

            Section 9.07. Acquisitions.  Make any Acquisition, unless the Person
to be  acquired  is  primarily  in the  business  of  manufacturing  or  selling
security,   surveillance,   safety  control  or  protection  systems  or  system
components,  and the Bank  has been  furnished  with (a) such  documents  as are
necessary  in the Bank's  discretion  to provide the Bank with a Guaranty of the
Person to be  acquired,  (b)  satisfactory  evidence  that,  during  the  period
beginning on the Closing Date through the Revolving Credit Termination Date, the
consideration  paid  or to be paid  by the  Borrower  in  connection  with  such
Acquisition,  when  aggregated  with  the  consideration  paid  or to be paid in
connection with all other  Acquisitions does not exceed either,  (i) if Borrower
consummates  the  Acquisition of Chun Shin,  $7,500,000 or (ii) if Borrower does
not  acquire  Chun  Shin,  $4,500,000,  (c)  satisfactory  evidence  that if the
Acquisition  involves  a Person  other  than  Chun  Shin,  such  Person  has its
principal business operations in the United States and, if an entity, was formed
under  the  laws of a  United  States  jurisdiction,  (d) a  certificate  of the
President or Chief Financial  Officer of Borrower  certifying that no Default or
Event of Default has occurred and is continuing  and that no Default or Event of
Default would occur as a result of Borrower's  making such  Acquisition  and (e)
prior to  completing  such  Acquisition,  financial  statements  of the Borrower
demonstrating  compliance  with the covenants  contained in Article 10, (i) on a
pro forma  basis at the time  immediately  after the  Acquisition  and (ii) on a
projected  basis,  for the  four  fiscal  quarters  immediately  following  such
Acquisition.

            Section 9.08.  No Activities Leading to Forfeiture Proceeding.  
Engage in or permit any Guarantor to engage in any unlawful activity which could
reasonably be expected to result in a Forfeiture Proceeding.


                                   - 33 -

<PAGE>



            Section 9.09.  Corporate Documents; Fiscal Year.  Change its fiscal 
year, or amend, modify or supplement its certificate or articles of 
incorporation or by-laws in any way.

            Section 9.10.  New Subsidiaries.  Form, or permit any Guarantor to 
form, any Subsidiary unless such Subsidiary shall become a party to the 
Guaranty.

            Section   9.11.   Capital   Expenditures.   Not  make  any   Capital
Expenditures in excess of $2,000,000 any fiscal year, excluding (a) Acquisitions
permitted  under  Section  9.07,  and  (b)  Capital  Expenditures   incurred  in
Borrower's  one  time  expansion  of  its  existing  facility  on  Arkay  Drive,
Hauppauge, New York.

ARTICLE 10.  FINANCIAL COVENANTS.

            So long as any of the Notes shall remain  unpaid or the Bank has any
obligations under this Agreement:

            Section 10.01.  Net Income.  Borrower shall on a consolidated  basis
(i)  maintain a positive  Net Income on a fiscal year  basis,  (ii) not have two
consecutive  fiscal  quarters in which it has net losses that total in excess of
$500,000 and (iii) not have net losses for four consecutive fiscal quarters that
total in excess of $800,000.

            Section 10.02.  Maximum  Liabilities to Worth Ratio.  Borrower shall
maintain on a  consolidated  basis at all times a ratio of Total  Liabilities to
Tangible Net Worth of not more than 1.50:1.0.

            Section  10.03.  Debt Coverage  Ratio.  Borrower shall maintain on a
consolidated basis at all times a Debt Coverage Ratio of not less than 1.25:1.0,
to be tested quarterly on a rolling four quarter basis.

            Section 10.04.  Determination  of Compliance.  Compliance with these
financial  covenants  shall be determined by reference to the  consolidated  and
consolidating financial statements of Borrower and its Subsidiaries delivered to
the Bank in accordance  with Section  8.08,  and shall exclude any balance sheet
information  or  results of  operations  of any  Subsidiary  which is not also a
Guarantor.  Except as set  forth in  10.01,  all  financial  covenants  shall be
applicable at all times and shall be tested at the end of each fiscal quarter.

ARTICLE 11.  EVENTS OF DEFAULT.

            Section 11.01.  Events of Default.  The occurrence of any of the 
following events shall be an "Event of Default":

            (a)  Borrower  shall  fail to pay  within  five days of due date (i)
principal  of the  Note,  (ii)  interest  on the Note or (iii)  any fee or other
amount due hereunder as and when due and payable.

                                   - 34 -

<PAGE>




            (b) Any  representation  or warranty made or deemed made by Borrower
in this Agreement,  or by Borrower or any Guarantor in any certificate delivered
pursuant to this Agreement or any other Loan Document,  or which is contained in
any certificate,  document,  opinion,  financial or other statement furnished to
the Bank at any time  pursuant  to any Loan  Document,  shall prove to have been
incorrect in any material respect on or as of the date made or deemed made;

            (c) Borrower shall fail to perform or observe any term,  covenant or
agreement contained in Section 2.03, Section 3.06 or Articles 8, 9 or 10;

            (d) Borrower or any  Guarantor  shall fail to perform or observe any
term,  covenant or agreement on its part to be performed or observed in any Loan
Document and such failure shall continue for 15 consecutive days;

            (e) Borrower or any Guarantor shall (i) fail to pay any amounts with
respect  to any  Debt  in  favor  of the  Bank,  including  but not  limited  to
indebtedness for borrowed money (other than the payment obligations described in
(a) above) of Borrower or such Guarantor, as the case may be, or any interest or
premium  thereon,  when due  (giving  effect to any  applicable  grace  period),
whether by scheduled  maturity,  required  prepayment,  acceleration,  demand or
otherwise,  (ii)  fail to pay any  other  Debt,  including  but not  limited  to
indebtedness  for borrowed money of Borrower or such Guarantor,  as the case may
be,  or any  interest  or  premium  thereon,  when  due  (giving  effect  to any
applicable grace period),  whether by scheduled maturity,  required  prepayment,
acceleration,  demand or  otherwise,  (iii) fail to perform or observe any term,
covenant  or  condition  on its  part to be  performed  or  observed  under  any
agreement or  instrument  relating to any Debt when  required to be performed or
observed,  if the effect of such failure to perform or observe is to accelerate,
or to permit the  acceleration of, after the giving of notice or passage of time
or both,  the  maturity of such Debt,  whether or not such failure to perform or
observe  shall be  waived by the  holder of such Debt or (iv) any Debt  shall be
declared  to be due and  payable,  or  required  to be prepaid  (other than by a
regularly scheduled required prepayment) prior to the stated maturity thereof;

            (f) Borrower or any Guarantor  shall (i) generally not, be unable to
or admit in writing  its or their  inability  to, pay its or their debts as such
debts  become due;  or (ii) make an  assignment  for the  benefit of  creditors,
petition or apply to any court or otherwise for the  appointment of a custodian,
receiver or trustee for it or a substantial  part of its or their assets,  (iii)
as  debtor,  commence  any  proceeding  under  any  bankruptcy,  reorganization,
arrangement,  readjustment of debt, dissolution or liquidation law or statute of
any  jurisdiction,  whether now or hereafter  in effect,  (iv) have had any such
petition or application  filed or any such proceeding shall have been commenced,
against it or them, in which an adjudication or appointment is made or order for
relief is  entered,  and  which  petition,  application  or  proceeding  remains
undismissed for a period of 30 days or more, or (v) by any act or omission shall
indicate  its or their  consent  to,  approval  of or  acquiescence  in any such
petition,  application or proceeding or order for relief or the appointment of a
custodian, receiver or trustee for all or any substantial part of its or their

                                   - 35 -

<PAGE>



property,  (vi) allow any such  custodianship,  receivership  or  trusteeship to
continue  undischarged  for a  period  of 30 days or more or  (vii)  cease to be
Solvent;

            (g) One or more  judgments,  decrees  or orders  for the  payment of
money in excess of $50,000 in the  aggregate in respect of uninsured or unbonded
claims  shall  be  rendered  against  Borrower  or any  of  Guarantor  and  such
judgments,  decrees or orders  shall  continue  unsatisfied  and in effect for a
period of 30 consecutive  days without being vacated,  discharged,  satisfied or
stayed or bonded pending appeal;

            (h) An event or condition  specified in Section 8.08(m) hereof shall
occur or exist with respect to any Plan or  Multiemployer  Plan and, as a result
of such event or condition,  together with all other such events or  conditions,
Borrower or any ERISA  Affiliate shall incur or in the opinion of the Bank shall
be  reasonably  likely to incur a liability to a Plan, a  Multiemployer  Plan or
PBGC (or any combination of the foregoing) which is, in the determination of the
Bank, material in relation to the financial condition,  operations,  business or
prospects of Borrower or the Guarantors;

            (i) Any Forfeiture Proceeding shall have been commenced;

            (j) Any Loan  Document  shall at any time  after its  execution  and
delivery  and for any reason  cease to be in full force and effect,  or shall be
declared  null and void,  or the  validity or  enforceability  thereof  shall be
contested  by  Borrower,  or any  Guarantor  shall deny that it has any  further
liability or obligation  under the Guaranty to which it is a party,  or Borrower
or any Guarantor shall fail to perform any of its material obligations under any
Loan Document to which it is a party; or

            (k) If any one or more conditions or events occur or exist which the
Bank determines resulted or is reasonably likely to result in a material adverse
change  in  the  business  operations,  properties  or  financial  condition  of
Borrower.

            Section 11.02.  Remedies.  If any Event of Default shall occur,  the
Bank may,  at its option (a)  declare  the  Revolving  Credit  Commitment  to be
terminated, whereupon the same shall forthwith terminate, and/or (b) declare the
outstanding  principal of the Notes,  all interest thereon and all other amounts
payable  under this  Agreement  and the Notes to be  forthwith  due and payable,
whereupon the Notes,  all such interest and all such amounts shall become and be
forthwith  due and  payable,  without  presentment,  demand,  protest or further
notice  of any kind,  all of which  are  hereby  expressly  waived by  Borrower;
provided  that,  in the case of an  Event  of  Default  referred  to in  Section
11.01(e)  or  Section  11.01(h)  above,  the  Commitments  shall be  immediately
terminated,  and the Note,  all interest  thereon and all other amounts  payable
under this Agreement and the Note shall be immediately  due and payable  without
notice,  presentment,  demand,  protest or other formalities of any kind, all of
which are hereby expressly waived by Borrower.


                                   - 36 -

<PAGE>



ARTICLE 12.  MISCELLANEOUS.

            Section 12.01. Amendments and Waivers. Except as otherwise expressly
provided in this  Agreement,  any provision of this  Agreement may be amended or
modified only by an instrument in writing  signed by Borrower and the Bank,  and
any  provision  of this  Agreement  may be  waived by  Borrower  or by the Bank;
provided that no amendment, modification or waiver shall be effective, unless by
an  instrument  signed  by the  Bank.  No  failure  on the  part of the  Bank to
exercise,  and no delay in exercising,  any right  hereunder  shall operate as a
waiver thereof or preclude any other or further exercise thereof or the exercise
of any  other  right.  The  remedies  herein  provided  are  cumulative  and not
exclusive of any remedies provided by law.

            Section   12.02.   Usury.    Anything   herein   to   the   contrary
notwithstanding,  the obligations of Borrower under this Agreement and the Notes
shall be  subject to the  limitation  that  payments  of  interest  shall not be
required to the extent that receipt  thereof  would be contrary to provisions of
law  applicable to the Bank limiting  rates of interest  which may be charged or
collected by the Bank.

            Section 12.03. Expenses. Borrower shall reimburse the Bank on demand
for all reasonable costs, expenses, and charges (including,  without limitation,
reasonable  fees and charges of external legal counsel for the Bank) incurred by
the Bank in connection with the preparation or performance of this Agreement and
the Loan  Documents.  In addition,  Borrower shall reimburse the Bank for all of
its  reasonable  costs  and  expenses  in  connection  with the  enforcement  or
preservation  of any  rights  under this  Agreement,  the Note or the other Loan
Documents.  Borrower  agrees to indemnify the Bank and its directors,  officers,
employees and agents from, and hold each of them harmless  against,  any and all
losses, liabilities, claims, damages or expenses incurred by any of them arising
out of or by reason of any  investigation  or  litigation  or other  proceedings
(including  any  threatened  investigation  or litigation or other  proceedings)
relating  to any actual or  proposed  use by  Borrower,  of the  proceeds of the
Loans, including,  without limitation,  the reasonable fees and disbursements of
counsel  incurred in  connection  with any such  investigation  or litigation or
other proceedings (but excluding any such losses,  liabilities,  claims, damages
or expenses incurred by reason of the gross negligence or willful  misconduct of
the Person to be indemnified).

            Section 12.04.  Survival.  The obligations of Borrower under Section
2.03(c),  Article 5 and Section  12.03 shall  survive the repayment of the Loans
for a period  corresponding to the maximum  applicable statute of limitations in
effect in the State of New York from time to time.

            Section 12.05. Assignment. This Agreement shall be binding upon, and
shall  inure to the  benefit  of,  Borrower  and the Bank and  their  respective
successors  and  assigns,  except that  Borrower  may not assign or transfer its
rights or obligations hereunder.


                                   - 37 -

<PAGE>



            Section 12.06. Notices. All notices,  consents,  approvals and other
communications required or permitted to be given to a party under this Agreement
shall be in writing and shall be delivered  personally to the party, sent by any
national  overnight  courier or mailed  first  class  mail,  to the party at the
address  indicated on page one, to the  attention  of James V.  Maiorino for the
Bank and to the attention of Kenneth M. Darby for Borrower.  Any item  delivered
in accordance  with the  provisions of this Section shall be deemed to have been
delivered  (i) on the  date  of  personal  delivery,  (ii) on the  business  day
following the date deposited with the overnight courier or (ii) on the fifth day
following the date on which it was so mailed, as the case may be.

            Section  12.07.  Setoff.  Borrower  agrees that, in addition to (and
without  limitation of) any right of setoff,  banker's lien or counterclaim  the
Bank may otherwise  have, the Bank shall be entitled,  at its option without any
prior notice to Borrower (any such notice being expressly  waived by Borrower to
the extent permitted by applicable law), to offset balances (general or special,
time or demand,  provisional or final) held by it for the account of Borrower at
any of the Bank's offices against any amount then due and payable by Borrower to
the Bank under this Agreement or the Note which is not paid when due (regardless
of  whether  such  balances  are then due to  Borrower),  in which case it shall
promptly notify Borrower thereof,  provided that the Bank's failure to give such
notice shall not affect the  validity  thereof.  Payments by Borrower  hereunder
shall be made without setoff or counterclaim.

            Section 12.08.  Jurisdiction; Immunities.

            (a) Borrowers hereby irrevocably  submits to the jurisdiction of any
New York  State or United  States  Federal  court  sitting  in Suffolk or Nassau
County  over  any  action  or  proceeding  arising  out of or  relating  to this
Agreement or the Note, and Borrower hereby irrevocably agrees that all claims in
respect of such action or  proceeding  may be heard and  determined  in such New
York State or Federal court. To the extent permitted by applicable law, Borrower
irrevocably consents to the service of any and all process in any such action or
proceeding by the mailing (by  certified or  registered  mail) of copies of such
process to it.  Borrower  agrees  that a final  judgment  in any such  action or
proceeding  shall be conclusive  and may be enforced in other  jurisdictions  by
suit on the  judgment  or in any other  manner  provided  by law.  To the extent
permitted by applicable law,  Borrower  further waives any objection to venue in
such State or Federal Court and any objection to an action or proceeding in such
State or Federal Court on the basis of forum non  conveniens.  Borrower  further
agrees that any action or proceeding  brought  against the Bank shall be brought
only in New York  State or United  States  Federal  court  sitting in Suffolk or
Nassau County.

            (b)  THE PARTIES WAIVE ANY RIGHT TO A JURY TRIAL.

            (c) Nothing in this  Section  shall  affect the right of the Bank to
serve legal process in any other manner  permitted by law or affect the right of
the Bank to bring any action or proceeding  against  Borrower or its property in
the courts of any other jurisdictions.


                                   - 38 -

<PAGE>



            (d) To the extent that  Borrower  has or  hereafter  may acquire any
immunity from  jurisdiction of any court or from any legal process (whether from
service or notice, attachment prior to judgment, attachment in aid of execution,
execution or otherwise) with respect to itself or its property,  Borrower hereby
irrevocably  waives, to the extent permitted by applicable law, such immunity in
respect of its obligations under this Agreement and the Notes.

            Section  12.09.  Severability.  The provisions of this Agreement are
intended to be  severable.  If for any reason any  provision  of this  Agreement
shall be held invalid or unenforceable in whole or in part in any  jurisdiction,
such provision shall, as to such  jurisdiction,  be ineffective to the extent of
such invalidity or unenforceability without in any manner affecting the validity
or enforceability  thereof in any other jurisdiction or the remaining provisions
hereof in any jurisdiction.

            Section 12.10. Integration.  The Loan Documents set forth the entire
agreement among the parties  relating to the transactions  contemplated  thereby
and supersede any prior oral or written statements or agreements with respect to
such transactions.

            Section 12.11.  Governing Law. This Agreement  shall be governed by,
and  interpreted  and construed in accordance  with, the law of the State of New
York applicable to agreements  made and to be performed  wholly within the State
of New York.

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

VICON INDUSTRIES, INC.                    KEYBANK NATIONAL ASSOCIATION


By:____________________________           By:____________________________
    Name:  Kenneth M. Darby                   Name:  James V. Maiorino
    Title:   President                        Title:   Vice President


                                   - 39 -

<PAGE>


                        List of Schedules and Exhibits



Schedule I                    Description of Liens

Schedule II                   List of Subsidiaries, Partnerships, etc.

Schedule                III List of  Credit  Agreements  (including  indentures,
                        purchase agreements, guaranties, Capital Leases, etc.)

Schedule IV                   Agreements effecting Loan Documents

Schedule V                    List of Guaranties



                           *     *     *     *     *



Exhibit A-1                   Form of Revolving Credit Note

Exhibit A-2                   Form of Term Note

Exhibit B                     Form of Guaranty

Exhibit C                     Form of Opinion of Counsel

Exhibit D                     Form of Notice of Borrowing


                                   - 40 -

<PAGE>

                              REVOLVING CREDIT NOTE


$7,500,000                                                      July 20, 1998


                  For  value  received,  Vicon  Industries,  Inc.  ("Borrower"),
hereby promises to pay to the order of KeyBank National Association,  a national
banking  association  (the "Bank"),  at the Bank's office at 1377 Motor Parkway,
Islandia,  New York 11788,  on or before July 22, 2002, the principal  amount of
$7,500,000,  or the actual amount loaned by the Bank to Borrower pursuant to the
"Credit  Agreement"  (defined  below),  in lawful money of the United  States of
America  and in  immediately  available  funds,  on the date  and in the  manner
provided in the Credit Agreement.  Borrower also promises to pay interest on the
unpaid principal  balance hereof at the rate or rates of interest as provided in
the Credit Agreement, on the dates and in the manner provided therein.

                  The holder of this Revolving Credit Note shall record the date
and  amount of each  Revolving  Credit  Loan made by the Bank,  and the date and
amount of each payment of principal or interest, either on the schedule attached
hereto,  or on such computer,  magnetic disk, tape or other such electronic data
storage and retrieval system as the Bank considers adequate for such purpose, in
its sole and absolute  discretion.  Any such record shall constitute prima facie
evidence of the accuracy of the  information  so recorded,  but no failure so to
record,  or any  error in so  recording,  shall  affect  the  obligation  of the
Borrower to repay any Revolving Credit Loans, with interest thereon, as provided
herein or in the Credit Agreement.

                  This is the Revolving  Credit Note referred to in that certain
Revolving  Credit Agreement dated July 20, 1998 between Borrower and the Bank as
amended from time to time (the "Credit Agreement"),  and evidences the Revolving
Credit  Loans made by the Bank  thereunder.  All  capitalized  terms not defined
herein shall have the meanings given to them in the Credit Agreement.

                  The Credit  Agreement  provides  for the  acceleration  of the
maturity of principal upon the  occurrence of certain  Events of Default,  for a
Default  Rate of  interest  and for pre-  payments  on the terms and  conditions
specified therein.

                  Borrower waives presentment,  notice of dishonor,  protest and
any other notice or formality with respect to this Revolving Credit Note, except
as may be set forth in the Credit Agreement.

                  The terms of this  Revolving  Credit  Note may not be  changed
orally, but only by an instrument duly executed by Borrower and the Bank.




<PAGE>




                  This Note shall be governed by, and  interpreted and construed
in accordance  with,  the law of the State of New York  applicable to agreements
made and to be performed wholly within the State of New York.

                                            VICON INDUSTRIES, INC.



                                            By:_______________________________
                                               Name:   Kenneth M. Darby
                                               Title:  President


<PAGE>



                       SCHEDULE OF REVOLVING CREDIT LOANS


Date           Type                       Principal
Principal
of             of          Interest       Amount of       Maturity      Paid or
Loan           Loan        Rate           Loan            of Loan       Unpaid


                                                     - 3 -

<PAGE>




                                 TERM LOAN NOTE


$4,500,000                                                       July 20, 1998


                  For  value  received,  Vicon  Industries,  Inc.  ("Borrower"),
hereby promises to pay to the order of KeyBank National Association,  a national
banking  association  (the "Bank"),  at the Bank's office at 1377 Motor Parkway,
Islandia,  New  York  11788,  the  principal  sum  of  $4,500,000  in  60  equal
consecutive  monthly  installments  of  $75,000,  in lawful  money of the United
States of America and in immediately  available funds, in the manner provided in
the "Credit  Agreement"  (defined below) on the first day of each calendar month
commencing  on  September  1, 1998 and ending  with a final  installment  of all
unpaid  principal  hereunder on July 21,  2003.  Borrower  also  promises to pay
interest on the unpaid  principal  balance  hereof at an annual rate of interest
equal to LIBOR, for the applicable  Interest Period,  plus a margin of 100 basis
points, as provided in the Credit Agreement,  on the dates and in the manner set
forth therein.

                  This is the Term Loan Note referred to in that certain  Credit
Agreement  dated July 20, 1998 between  Borrower  and the Bank,  as amended from
time to time (the "Credit  Agreement"),  and evidences the Term Loan made by the
Bank  thereunder.  All  capitalized  terms not  defined  herein  shall  have the
meanings given to them in the Credit Agreement.

                  The Credit  Agreement  provides  for the  acceleration  of the
maturity of principal upon the  occurrence of certain  Events of Default,  for a
Default  Rate of  interest  and for  pre-payments  on the terms  and  conditions
specified therein.

                  Borrower waives presentment,  notice of dishonor,  protest and
any other notice or formality  with respect to this Term Loan Note. The terms of
this Term Loan Note may not be changed  orally,  but only by an instrument  duly
executed by Borrower and the Bank.

                  This Note shall be governed by, and  interpreted and construed
in accordance  with,  the law of the State of New York  applicable to agreements
made and to be performed wholly within the State of New York.

                                          VICON INDUSTRIES, INC.


                                          By:_______________________________
                                             Name:   Kenneth M. Darby
                                             Title:  President


                                                     - 4 -

<PAGE>

                                   Guaranty


            Guaranty  dated July 20, 1998 from the person whose name and address
is set forth on the  signature  page hereof  ("Guarantor")  to KeyBank  National
Association, 1377 Motor Parkway, Islandia, New York 11788 ("Lender").

            Vicon Industries,  Inc.  ("Borrower"),  has obtained credit of up to
$14,000,000  from Lender (the "Loan")  pursuant to a Credit Agreement dated July
20, 1998 between Borrower and Lender ("Credit Agreement"). The Loan is evidenced
by Borrower's  promissory  notes  consisting of a Term Loan Note and a Revolving
Credit Note (collectively, the "Note").

            As part of the consideration for Lender's agreeing to make the Loan,
Borrower has agreed to obtain and deliver this Guaranty to Lender.  Guarantor is
a  Subsidiary  of Borrower  will benefit  substantially  as a result of Lender's
extending the Loan,  and Borrower and  Guarantor  acknowledge  that  Guarantor's
execution and delivery of this Guaranty is a condition to Lender's obligation to
make further advances of the Loan.

            Accordingly,  in consideration of Lender's making the Loan available
to Borrower, Guarantor agrees with Lender as follows:

            1. Guarantor  irrevocably and  unconditionally  guaranties to Lender
(i) the prompt and  complete  payment by Borrower of all amounts due pursuant to
the Note, the Credit Agreement or any other instrument or agreement  executed in
connection  with the  Loan,  referred  to in the  Credit  Agreement  (all of the
foregoing referred to herein as the "Loan Documents") and (ii) all other payment
and performance obligations of Borrower pursuant to the Loan Documents and (iii)
any other payment or performance obligations due from Borrower to Lender (all of
the foregoing under clauses (i), (ii) and (iii) being  collectively  referred to
as the  "Guaranteed  Obligations").  If Borrower shall default in payment of any
amount due  pursuant  to the Loan  Documents  or  otherwise  default  beyond any
applicable  grace  period  in the  performance  of the  Guaranteed  Obligations,
Guarantor  irrevocably and  unconditionally  agrees to pay to Lender upon demand
the amount in default or to cure the default if it is a non-payment  default (it
being understood,  however, that a non-payment may result in the acceleration of
all  indebtedness  and a demand  for  payment  in full by  Guarantor  under this
Guaranty).  Guarantor  understands,  agrees and confirms that Lender may enforce
this Guaranty up to the full amount of the Guaranteed  Obligations owing against
Guarantor  without  proceeding  against  Borrower,  against any security for the
Guaranteed  Obligations or against any other  guarantor under any other guaranty
respecting the  Guaranteed  Obligations.  This is a continuing  Guaranty and the
obligations of Guarantor are absolute and  unconditional,  without regard to the
validity,   regularity  or  enforceability  of  any  Loan  Document.   Guarantor
acknowledges receipt of a true copy of each Loan Document,  and has reviewed and
approved the same.



<PAGE>



            2. Guarantor shall indemnify and hold Lender harmless from all costs
and  damages  that Lender may suffer by reason of  Borrower's  failure to pay or
perform any of the Guaranteed Obligations.

            3. (a) Lender in its sole and absolute  discretion,  may at any time
and from time to time  without  the consent of or notice to  Guarantor,  without
incurring  responsibility  to  Guarantor,  without  impairing or  releasing  the
obligations of Guarantor hereunder,  upon or without any terms or conditions and
in whole or in part:

                  (i) by agreement  with Borrower,  change the manner,  place or
terms of payment of,  change or extend the time of payment of, or renew or alter
any of the Loan Documents or the Guaranteed  Obligations,  any security therefor
or any liability  incurred  directly or indirectly in respect thereof,  and this
Guaranty  shall apply to the Loan  Documents and  Guaranteed  Obligations  as so
changed, extended, renewed or altered;

                  (ii) exercise or refrain from  exercising  any rights  against
Borrower or others or otherwise act or refrain from acting;

                  (iii)  release,  settle or  compromise  any of the  Guaranteed
Obligations,  any security  therefor or any  liability  (including  any of those
hereunder)  incurred  directly or indirectly in respect  thereof or hereof,  and
subordinate  the  payment  of all or any  part  thereof  to the  payment  of any
liability (whether due or not) to creditors of Borrower other than Guarantor;

                  (iv)  consent to or waive any breach of, or any act,  omission
or default under any Loan Document or otherwise amend,  modify or supplement any
Loan Document;

                  (v)  agree to the  substitution,  exchange,  release  or other
disposition  of  all  or  any  part  of any  property  securing  the  Guaranteed
Obligations;

                  (vi) make advances for the purposes of performing  any term or
covenant  contained in any agreement between Lender and Borrower with respect to
which Borrower may be in default;

                  (vii)  assign  or  otherwise  transfer  all or any part of the
Guaranteed Obligations; or

                  (viii)  deal in all respects with Borrower as if this Guaranty
were not in effect.

            (b)  Guarantor's  liability  shall  be  unaffected  by  any  of  the
following, whether or not Guarantor has notice of same:

                                   - 2 -



<PAGE>




                  (i)  any foreclosure of any collateral securing payment or 
performance of the Guaranteed Obligations or any part thereof;

                  (ii) the  exculpatory  provisions,  if any, in a Loan Document
which may limit  Lender's  recourse  to property  encumbered  by a Lien or limit
Lender's rights to enforce a deficiency judgment against Borrower;

                  (iii) the release of  Borrower  or any other  person or entity
from  performance  or observance or any of the  agreements,  terms or conditions
contained in any Loan Documents, by operation of law or otherwise;

                  (iv) any bankruptcy, insolvency, reorganization,  arrangement,
assignment for the benefit of creditors,  receivership or trusteeship  affecting
the  Property,  Borrower or Guarantor  or any of its  respective  properties  or
assets; or

                  (v) Lender's failure to perfect, protect, secure or insure any
security interest given for the Guaranteed Obligations.

            (c) No invalidity,  irregularity or  unenforceability  of all or any
part of the  Guaranteed  Obligations  or of any security  therefor shall affect,
impair  or be a  defense  to this  Guaranty,  and  this  Guaranty  is a  primary
obligation of Guarantor.

            4. (a) Guarantor hereby waives any requirement that Lender institute
any action or proceeding  against Borrower or any other person in respect of any
Loan Document or any security held by Lender prior to bringing an action against
Guarantor  upon this  Guaranty.  The liability of Guarantor  under this Guaranty
shall be primary,  direct and immediate,  and not conditional or contingent upon
Lender's  pursuit of any  remedies  it may have  against  Borrower  or any other
guarantor  with  respect to the  Guaranteed  Obligations,  or against  any other
person  or  entity  or  against  any  other  collateral.  Without  limiting  the
generality of the foregoing,  Lender shall not be required to make any demand on
Borrower,  or to sell at foreclosure or otherwise pursue or exhaust its remedies
under the Credit  Agreement or otherwise  against property  securing  Borrower's
obligations  for the  Guaranteed  Obligations.  All remedies  afforded to Lender
pursuant to this  Guaranty or the Loan  Documents  are separate  and  cumulative
remedies. No one of such remedies,  whether exercised by Lender or not, shall be
deemed to exclude any of the other  remedies  available  to Lender and shall not
limit any other legal or equitable remedy available to Lender.

            (b) This Guaranty is a continuing  one and all  liabilities to which
it applies or may apply under the terms hereof shall be conclusively presumed to
have been created in reliance  hereon.  No failure,  forbearance or delay on the
part of Lender in  exercising  any right,  power or  privilege  hereunder  shall
operate as a waiver  thereof,  nor shall any single or partial  exercise  of any
right, power or privilege hereunder preclude any other or further

                                   - 3 -



<PAGE>



exercise  thereof or the exercise of any other  right,  power or  privilege.  No
notice to or demand on  Guarantor  in any case shall  entitle  Guarantor  to any
other  or  further  notice  or  demand  in  similar  or other  circumstances  or
constitute  a waiver of the rights of Lender to any other or  further  action in
any circumstances without notice or demand.

            (c) Until each and every term,  covenant  and  condition of the Loan
Documents and this Guaranty are fully performed, Guarantor shall not be released
by any act or event which might, but for this provision of this  instrument,  be
deemed a legal or  equitable  discharge  of a surety or a  guarantor.  Guarantor
acknowledges  and agrees that it is the purpose and intent of this Guaranty that
the obligations of Guarantor  hereunder be absolute and unconditional  under all
circumstances.

            5. Guarantor  hereby expressly waives (a) presentment and demand for
payment of the principal of or interest  thereon or any other sums of any nature
with  respect  thereto,  (b) notice of  acceptance  of this  Guaranty  or of the
extension of credit to Borrower, (c) notice of any default hereunder,  under the
Loan Documents or under any agreements  between Lender and Borrower with respect
to the  Guaranteed  Obligations,  (d)  demand  on  Borrower  for  observance  or
performance or enforcement of any terms or provisions of any agreements  between
Lender and Borrower with respect to the  Guaranteed  Obligations  and (e) to the
maximum  extent  permitted by  applicable  law and except as otherwise  provided
herein,  the benefit of all laws now or  hereafter in effect in any way limiting
or restricting the liability of Guarantor under this Guaranty, including any and
all right to stay of  execution  and  exemption  of  property  in any  action to
enforce the liability of Guarantor hereunder. If this Guaranty shall be enforced
by suit or otherwise,  Guarantor  shall pay Lender on demand for all  reasonable
fees and expenses incurred by Lender in connection therewith,  including without
limitation,  the  reasonable  fees and expenses of Lender's  counsel.  Guarantor
shall  indemnify  Lender  against loss,  cost or expense  (including  reasonable
attorneys fees and  disbursements)  resulting from  Borrower's  assertion of any
defense to its obligations under any Loan Document,  or if Guarantor asserts any
defense to its obligations under this Guaranty.

            6. (a) Any amounts which Guarantor  advances or becomes obligated to
pay for any purpose to Borrower or which  Borrower or now or  hereafter  owes to
Guarantor ("Subordinated Debt") shall at all times be subordinate as to priority
of payment and all other  respects  to all amounts due to Lender  under the Loan
Documents.

            (b) Nothing  herein  contained  is intended or shall be construed to
give  Guarantor  any  right  of  subrogation  in or  under  any  Loan  Document,
notwithstanding  any payments made by Guarantor  under this  Guaranty,  all such
rights  of  subrogation  and  participation  being  hereby  expressly  waived or
released.


                                   - 4 -



<PAGE>



            7. Guarantor represents and warrants to Lender as follows:

            (a) Guarantor  has all necessary  power and authority to execute and
deliver this Guaranty and to perform its obligations hereunder.

            (b)  This  Guaranty  is and will be the  legal,  valid  and  binding
obligation of Guarantor enforceable in accordance with its terms. The execution,
delivery and performance of this Guaranty and such other  agreements,  documents
and instruments and the performance of the transactions  contemplated  hereunder
have  been  and  will be duly  and  validly  authorized  and do not and will not
require any consent or approval of any third party,  other than  consents  which
have previously been obtained.

            (c) The  execution  and  delivery of this  Guaranty do not,  and the
consummation  of the  transactions  contemplated  hereby will not,  constitute a
violation of, and are not, and will not be, a default under or conflict with the
terms of any material contract, lease, indenture, agreement, order, judgment, or
decree  to which  it is a party  or by which it is bound or to which  any of its
assets are subject,  which in any case or in the aggregate could have a material
adverse effect on its ability to carry out its obligations  under this Guaranty,
and do not, and will not,  violate or  constitute  a default  under any statute,
rule, regulation,  order or ordinance of any governmental,  judicial or arbitral
body,  which in any case,  or in the  aggregate,  could have a material  adverse
effect on its ability to carry out its obligations under this Guaranty.

            (d) The most recent  financial  statements of  Guarantor,  copies of
which have been furnished to Lender,  fairly present the financial  condition of
Guarantor  as of the dates  indicated  in  accordance  with  generally  accepted
accounting principles  consistently applied.  There has been no material adverse
change in such  condition  or  Guarantor's  business  operations  (by  reason of
casualty  or  otherwise)  since the date of each of such  financial  statements.
Guarantor shall deliver to Lender such additional financial statements as may be
required  under the terms of the Credit  Agreement on such dates and within such
time periods as shall be specified therein.

            (e) There are no actions,  suits or proceedings  pending,  or to the
knowledge  of  Guarantor,  threatened  against  or  affecting  Guarantor  or the
properties  of  Guarantor  before any court,  commission  or other  governmental
agency or  instrumentality  which, if determined  adversely to Guarantor,  would
have a  material  adverse  effect  on the  financial  condition,  properties  or
operations of Guarantor.

            (f) No  information,  exhibit or report  furnished  by  Guarantor to
Lender in connection  with the Credit  Agreement or this  Guaranty  contains any
material  misstatement  of fact or omits to state a material  fact  necessary to
make the statements contained therein not misleading.

                                   - 5 -



<PAGE>




            8. Guarantor shall furnish Lender with such  information  respecting
the business,  properties,  condition of operations,  financial or otherwise, of
Guarantor as Lender may from time to time reasonably request.

            9. This Guaranty  shall be binding upon Guarantor and the respective
successors  and assigns of  Guarantor,  and shall inure to the benefit of Lender
and its successors  and assigns.  This Guaranty may not be assigned by Guarantor
to any other person or entity without Lender's consent.

            10.  Neither this Guaranty nor any provision  hereof may be changed,
waived, discharged or terminated except with Lender's consent.

            11. All notices,  demands, consents or other communications provided
for under this  Guaranty  ("Notices")  shall be in writing and shall be given by
personal  delivery,  by  certified  mail  or by  recognized  overnight  delivery
service.  If Notice is  delivered  to  Guarantor,  Notice  shall be addressed to
Guarantor at _________________________________, and if to Lender, at the address
set forth on page one.  Notices shall be effective (a) if by personal  delivery,
on the date of  delivery,  (b) if by  certified  mail,  on the  fifth  day after
deposit in the mails with  postage  prepaid and (c) if by  recognized  overnight
delivery service, on the business day following deposit with such service.

            12.  This  Guaranty  and the  rights and  obligations  of Lender and
Guarantor  hereunder  shall be governed and be construed in accordance  with the
laws of the State of New York  applicable  to  agreements  made and to be wholly
performed in the State of New York. Guarantor submits to the jurisdiction of any
New York State or United States  Federal Court sitting in Nassau County over any
action or proceeding  arising out of or relating to the Guaranty,  and Guarantor
agrees that all claims in respect of such action or proceeding  may be heard and
determined in such New York State or Federal court.  To the extent  permitted by
applicable law, Guarantor consents to service of any and all process in any such
action or proceeding by mailing (by certified mail) copies of such process to it
at its address  specified in Section 12. To the extent  permitted by  applicable
law,  Guarantor waives any objection to venue in such State or Federal court and
any  objection to an action or  proceeding in such State or Federal court on the
basis of forum non  conveniens.  Nothing in this  Section  shall limit  Lender's
rights to bring any action or proceeding  against Guarantor in the courts of any
other jurisdiction. THE PARTIES WAIVE ANY RIGHT TO A TRIAL BY JURY IN CONNECTION
HEREWITH TO THE EXTENT PERMITTED BY APPLICABLE LAW.

            13. If any of the  provisions  of this  Guaranty or the  application
thereof to any person or circumstances  shall be invalid or  unenforceable,  the
remainder of this Guaranty,  or the  application of such provision to persons or
circumstances  other than those as to whom it is held invalid or  unenforceable,
shall not be affected thereby.

                                   - 6 -



<PAGE>



            14.  Guarantor  waives  any  right  or  claim  of  right  to cause a
marshaling  of  Borrower's  assets or to cause  Lender to  proceed  against  any
security for the Credit  Agreement  before  proceeding  against  Guarantor or to
proceed against any other Guarantor in any particular  order.  Guarantor  agrees
that any payments  required to be made hereunder  shall become due in accordance
with the Note and Credit Agreement immediately upon the happening of any default
under the Note or the Credit Agreement.

            15. If Lender is required under any bankruptcy or other law to repay
any amounts  previously paid pursuant to this Guaranty to Borrower or Guarantor,
or to any trustee,  receiver or other  representative  of any of them, then this
Guaranty  shall be  reinstated to include the amount of such  repayment.  Lender
shall not be required to litigate or otherwise  dispute its  obligations to make
such repayments if, in good faith and on the advice of counsel,  Lender believes
that such obligation exists.

            16.  If there is more  than one  person  comprising  Guarantor,  the
liability of each person signing as Guarantor shall be joint and several and any
reference  to, or  covenant,  representation,  warranty or waiver made by or any
other  obligation of Guarantor  shall apply to each Guarantor and all references
to  "Guarantor"  shall be deemed to be  reference  to each,  any and all parties
comprising  Guarantor.  Each Guarantor also  guaranties the  obligations of each
other person  signing this  Guaranty as a Guarantor.  Lender may seek to enforce
any obligation against any Guarantor without having to proceed against any other
Guarantor.  The  use  of  neutral  pronouns  shall  include  the  masculine,  as
appropriate.

            17. Certain  capitalized words and phrases used in this Guaranty and
not defined herein shall have the meanings given them in the Credit Agreement.

            IN WITNESS WHEREOF, Guarantor has executed this Guaranty.

                                      Vicon Industries International Sales Corp.


                                          By:_________________________________
                                              Name:  Kenneth M. Darby
                                              Title:   President

                                          Address:    89 Arkay Drive
                                                      Hauppauge, NY  11788


                                   - 7 -



<PAGE>
                                                                      EXHIBIT C

                            [Letterhead of S, M & U]







                                                              July 20, 1998



KeyBank National Association
1377 Motor Parkway
Islandia, New York  11788

                  Re:      Mortgage Loan from KeyBank National
                           Association ("Lender") to Vicon Industries, Inc.

Gentlemen:

                  You  have   requested  our  opinion,   as  counsel  for  Vicon
Industries, Inc. (the "Borrower") and Vicon Industries International Sales Corp.
("Guarantor",  collectively with Borrower,  the "Obligors") in connection with a
credit made available by you to the Borrower in the aggregate  principal  amount
of up to $14,000,000 (the "Loan") and Guarantor's guaranty of Borrower's payment
and performance obligations to Lender under the Loan.

                  As  counsel  we  have  examined  and  are  familiar  with  the
proceedings  taken in forming the Borrower and  Guarantor  under the laws of its
respective  jurisdiction of formation,  including its respective  Certificate of
Incorporation and all amendments thereto. We have also examined and are familiar
with such  proceedings of the Borrower and Guarantor as we have deemed necessary
in the  circumstances.  We have also  examined and are familiar  with the Credit
Agreement,  Promissory Notes,  guaranty and all other  instruments  executed and
delivered by or on behalf of Borrower or Guarantor in  connection  with the Loan
and  dated  the date  hereof  (collectively,  the  "Loan  Documents"),  and have
attended the closing with respect to the Loan. Certain capitalized terms used in
this opinion which are not defined  herein shall have the meanings given them in
the Loan Documents.

                  In addition to the foregoing, we have examined and relied upon
such matters of law,  documents and  certificates of public officials as we have
deemed relevant to the rendering of our opinion.  In all such  examinations,  we
have  assumed  the  genuineness  of all  signatures  on original  and  certified
documents and the  conformity to original and certified  documents of all copies
submitted to us as conformed or photostatic copies. We point out, however,  that
we are  members  of the Bar of the  State of New York  and are not  admitted  to
practice in any other jurisdiction.



<PAGE>



KeyBank National Association
July ___, 1998
Page 2


                  Based  on the  foregoing  and  subject  to the  qualifications
hereinafter set forth we are of the opinion that:

                  1. Borrower and Guarantor  each is a duly  organized,  validly
existing  corporation,  and has all the requisite power and authority to own its
property and carry on its business as now being conducted.

                  2.  Borrower  has full power and  authority  to enter into and
perform the Loan  Documents and to borrow the Loan,  all of which have been duly
authorized  by all  necessary  and proper  action.  Guarantor has full power and
authority to enter into and perform the Guaranty, which has been duly authorized
by all  necessary  and proper  action.  To our  knowledge no consent or approval
(government or otherwise) or the taking of any other action (including,  without
limitation,  by  shareholders  of the Obligor) is required as a condition to the
validity or  enforceability of any of the Loan Documents except for any consents
and approvals heretofore delivered to you.

                  3.  Each of the Loan  Documents  has been  duly  executed  and
delivered and constitutes the valid and legally binding obligations of Borrower,
enforceable in accordance with its respective  terms,  except to the extent that
enforcement thereof may be limited by applicable bankruptcy, insolvency or other
similar laws affecting the  enforcements  of creditors'  rights  generally.  The
Guaranty has been duly  executed and  delivered  and  constitutes  the valid and
legally  binding  obligations of Guarantor,  enforceable in accordance  with its
respective terms,  except to the extent that enforcement  thereof may be limited
by  applicable  bankruptcy,  insolvency  or other  similar  laws  affecting  the
enforcements of creditors' rights generally, and by laws limiting enforceability
as to  issues  of  fraudulent  conveyance  due to  possible  issues  of  lack of
consideration for the Guaranty.

                  4.  To  our   knowledge,   there   are  no   actions,   suits,
investigations or administrative  proceedings of or before any court, arbitrator
or governmental  authority,  pending or threatened against Borrower or Guarantor
or any of its respective properties or assets which (i) either in any case or in
the aggregate, if adversely determined,  would materially,  adversely affect the
business,  operations  or  condition,  financial  or  otherwise,  of Borrower or
Guarantor;  or (ii)  question the  validity of any of the Loan  Documents or any
action to be taken in connection with the transactions contemplated thereby.

                  5. The execution,  delivery and performance by the Obligors of
the  Loan  Documents  do not and  will  not (i)  violate  any  provision  of its
respective  Certificate of  Incorporation,  or to our knowledge (ii) violate any
order, decree or judgment, or any provisions of any statute, rule or regulation,
domestic or foreign;  (iii) violate or conflict  with,  result in a breach of or
constitute  (with  notice  or lapse  of  time,  or  both) a  default  under  any
agreement,  mortgage,  indenture or contract to which Borrower or Guarantor is a
party,  or (iv) result in the  creation  or  imposition  of any lien,  charge or
encumbrance of any nature


<PAGE>



KeyBank National Association
July ___, 1998
Page 3

whatsoever  upon any  property  or assets of  Borrower  or  Guarantor  except as
contemplated by the Loan Documents.

                  6. To our  knowledge  (after due  inquiry) the proceeds of the
Loans  are not  being  and will not be used,  directly  or  indirectly,  for the
purpose of  "purchasing"  or "carrying" any "margin stock" in  contravention  of
Regulation U or X promulgated  by the Board of Governors of the Federal  Reserve
System.

                  7. To our  knowledge,  the  Obligors  are not in default  with
respect to any order, writ, injunction or decree of any court or of any federal,
state, municipal or other governmental  department,  commission,  board, bureau,
agency or authority, domestic or foreign, or in violation of any law, statute or
regulation,  domestic  or  foreign,  to which  any of them  is,  or any of their
respective  properties  are,  subject,  except for such  defaults or  violations
which,  in the  aggregate,  will  not have a  material,  adverse  effect  on the
business operations or condition, financial or otherwise, of Obligors.

                  Only you and your  counsel  may rely on this  opinion and then
only in connection  with the Loan  Documents and the  transactions  contemplated
thereby.

                                                Very truly yours,



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



<PAGE>
                                                                      Exhibit D
                             Notice of Borrowing




                                                         [Insert date]


KeyBank National Association
1377 Motor Parkway
Islandia, New York  11788

Attention:  Mr. James V. Maiorino

            Re:      KeyBank National Association with Vicon Industries, Inc.

Gentlemen:

                  Pursuant to the Credit  Agreement  dated July 20, 1998 between
us ("Credit  Agreement"),  this letter  constitutes  irrevocable  notice that we
request a Revolving Credit Loan as follows:

         1.       Amount of Loan:     [Insert amount]
         2.       Type of Loan:       [Insert Libor or Prime Rate Loan]
         3.       Interest Period:    [If Libor Loan, insert 30, 60 or 90 days]
         4.       Borrowing Date:     [Insert date]

                  We hereby certify that (i) the  representations and warranties
contained in the Credit Agreement and the other Loan Documents are true, correct
and  complete  on and as of the date hereof to the same extent as though made on
and as of the date hereof,  except as previously  disclosed to and waived by the
Bank in writing,  (ii) no Event of Default or default which, upon notice,  lapse
of time or both,  would  constitute an Event of Default,  has occurred under the
Credit  Agreement  or could result  after  giving  effect to the Loan  requested
hereunder  and (iii)  Borrower has performed  all  agreements  and satisfied all
conditions  under the Credit  Agreement  required  to be  performed  by it on or
before the date hereof.

                  Capitalized  terms used herein but not defined  shall have the
respective meanings given to them in the Credit Agreement.

                  IN WITNESS WHEREOF, Borrower has executed this certificate.

                                                Vicon Industries, Inc.


                                                By:____________________________
                                                   Name:
                                                   Title:




<TABLE> <S> <C>

<ARTICLE> 5
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          SEP-30-1998             SEP-30-1998
<PERIOD-END>                               JUN-30-1998             JUN-30-1998
<CASH>                                       3,028,170               3,028,170
<SECURITIES>                                         0                       0
<RECEIVABLES>                               13,115,639              13,115,639
<ALLOWANCES>                                 (644,188)               (644,188)
<INVENTORY>                                 17,021,144              17,021,144
<CURRENT-ASSETS>                            32,520,765              32,520,765
<PP&E>                                      13,174,584              13,174,584
<DEPRECIATION>                             (5,421,587)             (5,421,587)
<TOTAL-ASSETS>                              40,273,762              40,273,762
<CURRENT-LIABILITIES>                       10,659,957              10,659,957
<BONDS>                                      4,004,038               4,004,038
                                0                       0
                                          0                       0
<COMMON>                                        45,166                  45,166
<OTHER-SE>                                  25,564,601              25,564,601
<TOTAL-LIABILITY-AND-EQUITY>                40,273,762              40,273,762
<SALES>                                     16,106,001              45,711,106
<TOTAL-REVENUES>                                     0                       0
<CGS>                                       10,655,224              30,805,651
<TOTAL-COSTS>                                        0                       0
<OTHER-EXPENSES>                             3,516,851               9,806,694
<LOSS-PROVISION>                                54,000                 212,000
<INTEREST-EXPENSE>                             230,449                 924,279
<INCOME-PRETAX>                              1,649,477               3,962,482
<INCOME-TAX>                                    75,000                 225,000
<INCOME-CONTINUING>                          1,574,477               3,737,482
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                 1,574,477               3,737,482
<EPS-PRIMARY>                                      .40                    1.13
<EPS-DILUTED>                                      .38                    1.04
        

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