-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 KC3ej0qgdBrZP+ucvzd4r6Aml6JVCCy0/jsFLd8eYX8zmpsd+c1MjGncxoNKWzAT
 HuGFeQi3DejQE/CQbyGKlA==

<SEC-DOCUMENT>0001181431-07-026573.txt : 20070423
<SEC-HEADER>0001181431-07-026573.hdr.sgml : 20070423
<ACCEPTANCE-DATETIME>20070423181351
ACCESSION NUMBER:		0001181431-07-026573
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070419
FILED AS OF DATE:		20070423
DATE AS OF CHANGE:		20070423

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			RAE SYSTEMS INC
		CENTRAL INDEX KEY:			0001084876
		STANDARD INDUSTRIAL CLASSIFICATION:	MEASURING & CONTROLLING DEVICES, NEC [3829]
		IRS NUMBER:				770588488
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3775 NORTH FIRST STREET
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		408-952-8200

	MAIL ADDRESS:	
		STREET 1:		3775 NORTH FIRST STREET
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NETTAXI INC
		DATE OF NAME CHANGE:	19990422

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Hameister Christopher Robert
		CENTRAL INDEX KEY:			0001371962

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31783
		FILM NUMBER:		07782623

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		011 45 30 35 72 92

	MAIL ADDRESS:	
		STREET 1:		KILDEV?LDSGADE 2,1
		CITY:			COPENHAGEN, OE
		STATE:			G7
		ZIP:			2100
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>rrd155340.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2007-04-19</periodOfReport>

    <dateOfOriginalSubmission>2007-04-23</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001084876</issuerCik>
        <issuerName>RAE SYSTEMS INC</issuerName>
        <issuerTradingSymbol>AMEX: RAE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001371962</rptOwnerCik>
            <rptOwnerName>Hameister Christopher Robert</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3775 NORTH FIRST STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Options (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>2.89</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-04-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.89</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2007-04-19</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-04-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>50000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>200000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <remarks>The option vests 1/4 of the shares on April 19, 2008 (&quot;the Initial Vest Date&quot;), provided the Optionee's service has not terminated prior to such date, plus 1/48 for each full month of the Optionee's service from the Initial Date until fully vested.



Corrected Box 5 from &quot;D&quot; to &quot;A&quot;



Corrected Box 5 from &quot;D&quot; to &quot;A&quot; and Date of Earliest Transaction from

4-23-2007 to 4-19-2007</remarks>

    <ownerSignature>
        <signatureName>Michael Ownby, Attorney-in-Fact</signatureName>
        <signatureDate>2007-04-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----