Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in the Registration Statement Nos. 333-02828 and 333-40158 of Protection One, Inc. on Form S-8 of our report dated June 4, 2004, appearing in the Annual Report on Form 11-K of the Protection One 401(k) Plan for the year ended December 31, 2003.
DELOITTE & TOUCHE LLP
Kansas City, Missouri
June 23, 2004
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