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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-02-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000101984</issuerCik>
        <issuerName>UNIVERSAL ELECTRONICS INC</issuerName>
        <issuerTradingSymbol>UEIC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001216543</rptOwnerCik>
            <rptOwnerName>ARLING PAUL D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>15147 NORTH SCOTTSDALE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>H300</rptOwnerStreet2>
            <rptOwnerCity>SCOTTSDALE</rptOwnerCity>
            <rptOwnerState>AZ</rptOwnerState>
            <rptOwnerZipCode>85254</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11800</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>258944</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Arling Family Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>36000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>36000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>107679</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-02-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>36000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F5"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>36000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>36000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option (Rt to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>62.70</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2024-02-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F6"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>38245</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2018-02-08</value>
            </exerciseDate>
            <expirationDate>
                <value>2024-02-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>38245</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>418830</value>
                    <footnoteId id="F7"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These shares are held by the Arling Family Trust. Mr. Arling disclaims beneficial ownership of the shares held by the Trust.</footnote>
        <footnote id="F2">Each restricted stock unit represents a contingent right to receive one share of UEI common stock.</footnote>
        <footnote id="F3">Restricted Stock Grant was approved by the Compensation Committee of the Board of Directors on January 25, 2024 and ratified and approved by the Board of Directors on February 7, 2024 and granted on February 7, 2024.  The  shares will vest over 3 years with 33.33% vesting on the first anniversary of the grant date and 8.33% vesting on each quarterly anniversary of the grant date thereafter.  The shares will be fully vested on the third anniversary of the grant date.</footnote>
        <footnote id="F4">Each performance stock unit represents a contingent right to receive one share of UEI common stock.</footnote>
        <footnote id="F5">Performance Stock Grant was approved by the Compensation Committee of the Board of Directors on January 25, 2024 and ratified and approved by the Board of Directors on February 7, 2024, and granted on February 7, 2024. The performance stock unit awards will vest in 3 separate tranches with 3 separate stock price and service conditions. Each tranche will vest only when both the stock price and service conditions have been achieved. The stock price condition for each tranche must be met on or by the third anniversary of the grant (2/7/2027). Any unvested tranche will expire at close of business on 2/7/2027.</footnote>
        <footnote id="F6">Expiry of Employee Stock Options.</footnote>
        <footnote id="F7">This figure represents an aggregate number of stock options held by Reporting Person.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Paul D. Arling, by Richard A. Firehammer, Jr., pursuant to Limited Power of Attorney dated January 22, 2003 (attached)</signatureName>
        <signatureDate>2024-02-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
[{"type": "4", "sequence": "1", "filename": "wk-form4_1707514415.xml", "description": "FORM 4", "secsgml_size_bytes": 11653}]
X0508
4
2024-02-07
0
0000101984
UNIVERSAL ELECTRONICS INC
UEIC
0001216543
ARLING PAUL D
15147 NORTH SCOTTSDALE ROAD
H300
SCOTTSDALE
AZ
85254
1
1
0
0
CEO
0
Common Stock
11800
D
Common Stock
1000
I
By Spouse
Common Stock
258944
I
By Arling Family Trust
Restricted Stock Units
2024-02-07
4
A
0
36000
0
A
Common Stock
36000
107679
D
Performance Stock Units
2024-02-07
4
A
0
36000
0
A
Common Stock
36000
36000
D
Employee Stock Option (Rt to Buy)
62.70
2024-02-08
4
J
0
38245
0
D
2018-02-08
2024-02-08
Common Stock
38245
418830
D
These shares are held by the Arling Family Trust. Mr. Arling disclaims beneficial ownership of the shares held by the Trust.
Each restricted stock unit represents a contingent right to receive one share of UEI common stock.
Restricted Stock Grant was approved by the Compensation Committee of the Board of Directors on January 25, 2024 and ratified and approved by the Board of Directors on February 7, 2024 and granted on February 7, 2024.  The  shares will vest over 3 years with 33.33% vesting on the first anniversary of the grant date and 8.33% vesting on each quarterly anniversary of the grant date thereafter.  The shares will be fully vested on the third anniversary of the grant date.
Each performance stock unit represents a contingent right to receive one share of UEI common stock.
Performance Stock Grant was approved by the Compensation Committee of the Board of Directors on January 25, 2024 and ratified and approved by the Board of Directors on February 7, 2024, and granted on February 7, 2024. The performance stock unit awards will vest in 3 separate tranches with 3 separate stock price and service conditions. Each tranche will vest only when both the stock price and service conditions have been achieved. The stock price condition for each tranche must be met on or by the third anniversary of the grant (2/7/2027). Any unvested tranche will expire at close of business on 2/7/2027.
Expiry of Employee Stock Options.
This figure represents an aggregate number of stock options held by Reporting Person.
/s/Paul D. Arling, by Richard A. Firehammer, Jr., pursuant to Limited Power of Attorney dated January 22, 2003 (attached)
2024-02-09