<PAGE> 1
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
Under the Securities Exchange Act of 1934
(AMENDMENT NO. 1)
Detection Systems, Inc.
- ------------------------------------------------------------------------------
(Name of Issuer)
Common Stock
- -----------------------------------------------------------------------------
(Title of Class of Securities)
250644101
- -----------------------------------------------------------------------------
(CUSIP Number)
July 28, 1998
- -----------------------------------------------------------------------------
(Date of event which requires filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13D-1(b)
[X] Rule 13D-1(c)
[ ] Rule 13D-1(d)
*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities,
and for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.
The information required in the remainder of this cover page shall not be
deemed to be "filed" for the purpose of Section 18 of the Securities Exchange
Act of 1934 ("Act") or otherwise subject to the liabilities of that section of
the Act, but shall be subject to all other provisions of the Act (however, see
the Notes).
Page 1 of 4 pages
<PAGE> 2
CUSIP No. 250644101 SCHEDULE 13G Page 2 of 4 Pages
- --------------------------------------------------------------------------------
1 NAME OF REPORTING PERSON
S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS
Ultrak, Inc.
- --------------------------------------------------------------------------------
2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
(See Instructions) (a) / /
(b) / /
N/A
- --------------------------------------------------------------------------------
3 SEC USE ONLY
- --------------------------------------------------------------------------------
4 CITIZENSHIP OR PLACE OF ORGANIZATION
Delaware corporation, U.S.A.
- --------------------------------------------------------------------------------
5 SOLE VOTING POWER
NUMBER OF
632,000
SHARES -------------------------------------------------
6 SHARED VOTING POWER
BENEFICIALLY
OWNED BY 0
------------------------------------------------
EACH 7 SOLE DISPOSITIVE POWER
REPORTING
632,000
PERSON ------------------------------------------------
8 SHARED DISPOSITIVE POWER
WITH
- -------------------------------------------------------------------------------
9 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
632,000
- --------------------------------------------------------------------------------
10 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES
N/A
- --------------------------------------------------------------------------------
11 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
10.0%
- --------------------------------------------------------------------------------
12 TYPE OF REPORTING PERSON*
CO
- --------------------------------------------------------------------------------
*SEE INSTRUCTION BEFORE FILLING OUT!
Page 2 of 4 pages
<PAGE> 3
SCHEDULE 13G
ITEM 1 (a). NAME OF ISSUER:
Detection Systems, Inc.
------------------------------------------------------------
ITEM 1 (b). ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
130 Perinton Parkway/Fairport, New York 14450
------------------------------------------------------------
ITEM 2 (a). NAME OF PERSON FILING:
Ultrak, Inc.
------------------------------------------------------------
ITEM 2 (b). ADDRESS OF PRINCIPAL BUSINESS OFFICE:
1301 Waters Ridge Drive/Lewisville, Texas 75057
------------------------------------------------------------
ITEM 2 (c). CITIZENSHIP:
Delaware Corporation, U.S.A.
------------------------------------------------------------
ITEM 2 (d). TITLE OF CLASS OF SECURITIES:
Common Stock
------------------------------------------------------------
ITEM 2 (e). CUSIP NUMBER:
250644101
------------------------------------------------------------
ITEM 3 TYPE OF REPORTING PERSON:
CO
------------------------------------------------------------
ITEM 4 OWNERSHIP.
(a) AMOUNT BENEFICIALLY OWNED: 632,000
(b) PERCENT OF CLASS: 10.0%
(c) NUMBER OF SHARES AS TO WHICH SUCH PERSON HAS:
(i) sole voting power
632,000
(ii) shared voting power
N/A
(iii) sole dispositive power
N/A
(iv) shared dispositive power
N/A
Page 3 of 4 Pages
<PAGE> 4
ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:
N/A
-------------------------------------------------------------
ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER
PERSON:
N/A
-------------------------------------------------------------
ITEM 7. IDENTIFICATION AND CLASSIFICATION OF SUBSIDIARIES WHICH
ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT
HOLDING COMPANY:
N/A
-------------------------------------------------------------
ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:
N/A
-------------------------------------------------------------
ITEM 9. NOTICE OF DISSOLUTION OF GROUP:
N/A
-------------------------------------------------------------
ITEM 10. CERTIFICATION:
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were not
acquired for the purpose of or with the effect of changing or
influencing the control of the issuer of the securities and
were not acquired and or not held in connection with or as a
participant in any transaction having that purpose or effect.
-------------------------------------------------------------
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.
DATED: July 28, 1998
---------------------
ULTRAK, INC.
By: /s/ TIM TORNO
-------------------------
Vice President, Secretary
