-----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,
 AFrr64HJZ7uEWsTtWlS54JnfXxtqIN6XvUVhbtYkp45DSNScfAyzvd332gqH54xX
 SZgnM/vAw97I4qtAC+yKbA==

<SEC-DOCUMENT>0001179110-04-016013.txt : 20040806
<SEC-HEADER>0001179110-04-016013.hdr.sgml : 20040806
<ACCEPTANCE-DATETIME>20040806161355
ACCESSION NUMBER:		0001179110-04-016013
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040804
FILED AS OF DATE:		20040806

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			KLING ROBERT V
		CENTRAL INDEX KEY:			0001221694

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-09996
		FILM NUMBER:		04958300

	MAIL ADDRESS:	
		STREET 1:		671 WOODLAWN AVENUE
		CITY:			ST. PAUL
		STATE:			MN
		ZIP:			55116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DOTRONIX INC
		CENTRAL INDEX KEY:			0000351809
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS MANUFACTURING INDUSTRIES [3990]
		IRS NUMBER:				411387074
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		160 FIRST ST S E
		CITY:			NEW BRIGHTON
		STATE:			MN
		ZIP:			55112-7894
		BUSINESS PHONE:		6126331742

	MAIL ADDRESS:	
		STREET 1:		160 FIRST STREET SE
		CITY:			NEW BRIGHTON
		STATE:			MN
		ZIP:			55112
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 4 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2004-08-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000351809</issuerCik>
        <issuerName>DOTRONIX INC</issuerName>
        <issuerTradingSymbol>DOTX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001221694</rptOwnerCik>
            <rptOwnerName>KLING ROBERT V</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>160 FIRST STREET SE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW BRIGHTON</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2004-08-04</value>
                <footnoteId id="F1"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>2.50</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>41000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">2,500 shares vest immediately, 2,500 shares vest October 1, 2004, 2,500 shares vest January 1, 2005, and 2,500 shares vest April 1, 2005</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Robert V. Kling</signatureName>
        <signatureDate>2004-08-06</signatureDate>
    </ownerSignature>
</ownershipDocument>

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