UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9) Integrated Security Systems, Inc. --------------------------------------------------------------------- (Name of Issuer) Common Stock --------------------------------------------------------------------- (Title of Class of Securities) 45812J101 -------------------------- (CUSIP Number) 13G CUSIP No. 45812J101 ---------------------------------------------------------------------- 1. NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. Renaissance Capital Growth and Income Fund III, Inc. 75-2533518 -------------------------------------------------------------------------- 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ] (b) [ ] -------------------------------------------------------------------------- 3. SEC USE ONLY ------------------------------------------------------------------------- 4. CITIZENSHIP OR PLACE OF ORGANIZATION Texas ------------------------------------------------------------------------- NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: -------------------------------------------------------------------------- 5. SOLE VOTING POWER 9,124,295 shares ------------------------------------------------------------------------- 6. SHARED VOTING POWER None ------------------------------------------------------------------------- 7. SOLE DISPOSITIVE POWER 9,124,295 shares ------------------------------------------------------------------------- 8. SHARED DISPOSITIVE POWER None ------------------------------------------------------------------------- 9. AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 9,124,295 shares -------------------------------------------------------------------------- 10. CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES* Not applicable ------------------------------------------------------------------------- 11. PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 45.84% ------------------------------------------------------------------------- 12. TYPE OF REPORTING PERSON IV ------------------------------------------------------------------------- ITEM 1. (a)Name of Issuer. Integrated Security Systems, Inc. ("Company") (b)Address of Issuer's principal Executive Offices 8200 Springwood Drive, Suite 230 Irving, TX 75063 ITEM 2. (a)Name of Person Filing Renaissance Capital Growth and Income Fund III, Inc. ("Filer") (b)Address of principal Business Office or, if none, Residence 8080 North Central Expwy., Suite 210, LB 59 Dallas, TX 75206-1857 (c)Citizenship Texas (d)Title of Class of Securities Common Stock (e)CUSIP Number 75966V105 ITEM 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check whether the person filing is a: (a) ______ Broker or Dealer registered under Section 15 of the Act (b) ______ Bank as defined in section 3(a)(6) of the Act (c) ______ Insurance Company as defined in section 3(a)(19) of the Act (d) X Investment Company registered under section 8 of the Investment Company Act ------ (e) ______ Investment Adviser registered under section 203 of the Investment Advisers Act of 1940 (f) ______ Employee Benefit Plan, Pension Fund which is subject to the provisions of the Employee Retirement Income Security Act of 1974 or Endowment Fund; see section 240.13d-1(b)(1)(ii)(F) (g) ______ Parent Holding Company, in accordance with section 240.13d-1(b)(ii)(G)(Note: See Item 7) (h) ______ Group, in accordance with section 240.13d-1(b)(1)(ii)(H) ITEM 4. Ownership. (a)Amount Beneficially Owned: As of April 1, 2001, the Filer owned 8,374,295 shares on a fully converted basis. On April 11, 2001, the Filer purchased a $150,000 8% convertible promissory note, due and payable in 120 days and convertible at the Filer's option into common stock of the Company at a rate of $0.20 per share. Thus, the Filer owns 9,124,295 shares of the Company's common stock on a fully converted basis. The Investment Advisor is Renaissance Capital Group, Inc., which is also Investment Manager for Renaissance US Growth and Income Trust PLC. Renaissance US Growth and Income Trust PLC also owns securities of Integrated Security Systems, Inc. (b)Percent of Class 45.84% (c)Number of shares as to which such person has: (i) sole power to vote or to direct the vote: 9,124,295 shares (ii) shared power to vote or to direct the vote: None (iii) sole power to dispose or to direct the disposition of: 9,124,295 shares (iv) shared power to dispose or to direct the disposition of: None ITEM 5. Ownership of Five Percent or Less of a Class. If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following: [ ] ITEM 6. Ownership of More than Five Percent on Behalf of Another Person. Not applicable. ITEM 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company. Not applicable. ITEM 8. Identification and Classification of Members of the Group. Not applicable. ITEM 9. Notice of Dissolution of Group. Not applicable. ITEM 10.Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes 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. Date: May 10, 2001 /S/ ------------------------------------------- Signature Russell Cleveland, President and CEO Renaissance Capital Growth and Income Fund III, Inc. ------------------------------------------- Name and Title