Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in Registration Statement Nos. 333-02828 and 333-40158 of Protection One, Inc. on Form S-8 of our report dated June 22, 2006, appearing in this Annual Report on Form 11-K of the Protection One 401(k) Plan for the year ended December 31, 2005.
/s/ DELOITTE & TOUCHE LLP
Kansas City, Missouri
June 26, 2006