-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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MIC-Info: RSA-MD5,RSA,
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 UhU6G4FcmIl1QSjwZgjgBw==

<SEC-DOCUMENT>0000942708-07-000206.txt : 20070924
<SEC-HEADER>0000942708-07-000206.hdr.sgml : 20070924
<ACCEPTANCE-DATETIME>20070924160030
ACCESSION NUMBER:		0000942708-07-000206
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070823
FILED AS OF DATE:		20070924
DATE AS OF CHANGE:		20070924

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PROTECTION ONE INC
		CENTRAL INDEX KEY:			0000916230
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISCELLANEOUS BUSINESS SERVICES [7380]
		IRS NUMBER:				931063818
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1035 N. 3RD ST.
		STREET 2:		SUITE 101
		CITY:			LAWRENCE
		STATE:			KS
		ZIP:			66044
		BUSINESS PHONE:		785 856 5500

	MAIL ADDRESS:	
		STREET 1:		1035 N. 3RD ST.
		STREET 2:		SUITE 101
		CITY:			LAWRENCE
		STATE:			KS
		ZIP:			66044

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Russo Thomas J
		CENTRAL INDEX KEY:			0001395410

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12181-01
		FILM NUMBER:		071131621

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		972 916-6154

	MAIL ADDRESS:	
		STREET 1:		PROTECTION ONE, INC.
		STREET 2:		4221 W. JOHN CARPENTER FREEWAY
		CITY:			IRVING
		STATE:			TX
		ZIP:			75063
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-08-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000916230</issuerCik>
        <issuerName>PROTECTION ONE INC</issuerName>
        <issuerTradingSymbol>PONN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001395410</rptOwnerCik>
            <rptOwnerName>Russo Thomas J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>PROTECTION ONE, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>4221 W. JOHN CARPENTER FREEWAY</rptOwnerStreet2>
            <rptOwnerCity>IRVING</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75063</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, $0.01 par value</value>
            </securityTitle>
            <transactionDate>
                <value>2007-08-23</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8114</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>8114</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Not applicable.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ J. Eric Griffin as POA for Thomas J. Russo</signatureName>
        <signatureDate>2007-08-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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