<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-06-15</periodOfReport>

    <issuer>
        <issuerCik>0000002186</issuerCik>
        <issuerName>RELM WIRELESS CORP</issuerName>
        <issuerTradingSymbol>RWC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001701633</rptOwnerCik>
            <rptOwnerName>Turner Ryan R.K.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O RELM WIRELESS CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>7100 TECHNOLOGY DRIVE</rptOwnerStreet2>
            <rptOwnerCity>WEST MELBOURNE</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>32904</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.60 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2017-06-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5479</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5831</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents a grant of restricted stock units under the RELM Wireless Corporation 2017 Incentive Compensation Plan.  Each restricted stock unit represents a contingent right to receive one share of the Issuer's Common Stock.  The restricted stock units vest in full 12 months after the grant date, subject to the Reporting Person's continued service as a director of the Issuer through such date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Ryan R.K. Turner</signatureName>
        <signatureDate>2017-06-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
