-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 kZSWZZbwpeCIbVt84ZS6Kw==

<SEC-DOCUMENT>0000919567-03-000064.txt : 20030909
<SEC-HEADER>0000919567-03-000064.hdr.sgml : 20030909
<ACCEPTANCE-DATETIME>20030909173022
ACCESSION NUMBER:		0000919567-03-000064
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030905
FILED AS OF DATE:		20030909

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			INTEGRATED SECURITY SYSTEMS INC
		CENTRAL INDEX KEY:			0000741114
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATIONS EQUIPMENT, NEC [3669]
		IRS NUMBER:				752422983
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		8200 SPRINGWOOD DR STE 230
		CITY:			IRVING
		STATE:			TX
		ZIP:			75063
		BUSINESS PHONE:		9724448280

	MAIL ADDRESS:	
		STREET 1:		8200 SPRINGWOOD DR SUITE 230
		CITY:			IRVING
		STATE:			TX
		ZIP:			75063

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			BFS US SPECIAL OPPORTUNITIES TRUST PLC
		CENTRAL INDEX KEY:			0001159050
		STATE OF INCORPORATION:			X0

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-11900
		FILM NUMBER:		03888633

	BUSINESS ADDRESS:	
		STREET 1:		8080 N CENTRAL EXPRESSWAY
		STREET 2:		STE 210 LB 59
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75206
		BUSINESS PHONE:		2148918294

	MAIL ADDRESS:	
		STREET 1:		8080 N CENTRAL EXPRESSWAY
		STREET 2:		STE 210 LB 59
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75206
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>bfs-09052003note_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<!-- - EDGAR Ease Plus 1.0                                   07/25/03  TT    -->
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType>
   <periodOfReport>2003-09-05</periodOfReport>
   <notSubjectToSection16>0</notSubjectToSection16>
    <issuer>
        <issuerCik>0000741114</issuerCik>
        <issuerName>INTEGRATED SECURITY SYSTEMS INC</issuerName>
        <issuerTradingSymbol>IZZI</issuerTradingSymbol>
   </issuer>
   <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001159050</rptOwnerCik>
            <rptOwnerName>BFS US SPECIAL OPPORTUNITIES TRUST PLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8080 N CENTRAL EXPRESSWAY</rptOwnerStreet1>
            <rptOwnerStreet2>STE 210 LB 59</rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75206</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
         <isDirector>0</isDirector>
         <isOfficer>0</isOfficer>
         <isTenPercentOwner>1</isTenPercentOwner>
         <isOther>0</isOther>
      </reportingOwnerRelationship>
   </reportingOwner>
 <derivativeTable>
   <derivativeTransaction>
      <securityTitle>
         <value>$500,000 7% convertible note</value>
      </securityTitle>
      <conversionOrExercisePrice>
         <value>.40</value>
      </conversionOrExercisePrice>
      <transactionDate>
         <value>2003-09-05</value>
      </transactionDate>
      <transactionCoding>
         <transactionFormType>4</transactionFormType>
         <transactionCode>P</transactionCode>
         <equitySwapInvolved>0</equitySwapInvolved>
      </transactionCoding>
      <transactionAmounts>
         <transactionShares>
           <value>1250000</value>
         </transactionShares>
         <transactionPricePerShare>
           <value>.40</value>
         </transactionPricePerShare>
         <transactionAcquiredDisposedCode>
           <value>A</value>
         </transactionAcquiredDisposedCode>
      </transactionAmounts>
      <exerciseDate>
         <value>2003-09-05</value>
      </exerciseDate>
      <expirationDate>
         <value>2008-09-04</value>
      </expirationDate>
      <underlyingSecurity>
         <underlyingSecurityTitle>
           <value>Common Stock</value>
         </underlyingSecurityTitle>
         <underlyingSecurityShares>
           <value>1250000</value>
         </underlyingSecurityShares>
      </underlyingSecurity>
      <postTransactionAmounts>
         <sharesOwnedFollowingTransaction>
           <value>1250000</value>
         </sharesOwnedFollowingTransaction>
      </postTransactionAmounts>
      <ownershipNature>
         <directOrIndirectOwnership>
           <value>D</value>
         </directOrIndirectOwnership>
      </ownershipNature>
   </derivativeTransaction>
 </derivativeTable>
   <remarks>BFS US Special Opportunities Trust PLC is the beneficial owner of more than 10% of the Company's common stock on a fully converted basis.  The Investment Adviser is RENN Capital Group, Inc., which is Investment Manager for Renaissance US Growth Investment Trust PLC and Investment Adviser to Renaissance Capital Growth &amp; Income Fund III, Inc., both of which also own stock of the Company.</remarks>
   <ownerSignature>
      <signatureName>Russell Cleveland, President &amp; CEO, RENN Capital Group, Inc.</signatureName>
      <signatureDate>2003-09-09</signatureDate>
   </ownerSignature>
</ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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