**Exhibit 31.2**

 

**CERTIFICATIONPURSUANT TO**

**RULE 13a-14UNDER THE**

**SECURITIESEXCHANGE ACT OF 1934**

 

I, Darius G. Nevin, certify that:

 

1.               I have reviewed this annual report on Form10-K of Protection One, Inc. and Protection One Alarm Monitoring, Inc.;

 

2.               Based on my knowledge, this report does notcontain any untrue statement of a material fact or omit to state a materialfact necessary to make the statements made, in light of the circumstances underwhich such statements were made, not misleading with respect to the periodcovered by this report;

 

3.               Based on my knowledge, the financialstatements, and other financial information included in this report, fairlypresent in all material respects the financial condition, results of operationsand cash flows of the registrants as of, and for, the periods presented in thisreport;

 

4.               The registrants’ other certifying officer andI are responsible for establishing and maintaining disclosure controls andprocedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for theregistrant and have:

 

a.               Designed such disclosure controls andprocedures, or caused such disclosure controls and procedures to be designedunder our supervision, to ensure that material information relating to theregistrant, including its consolidated subsidiaries, is made known to us byothers within those entities, particularly during the period in which thisreport is being prepared;

 

b.              [Reserved]

 

c.               Evaluated the effectiveness of theregistrants’ disclosure controls and procedures and presented in this reportour conclusions about the effectiveness of the disclosure controls andprocedures, as of the end of the period covered by  this report based on such evaluation; and

 

d.              Disclosed in this report any change in theregistrants’ internal control over financial reporting that occurred during theregistrants’ most recent fiscal quarter (the registrants’ fourth fiscal quarterin the case of an annual report) that has materially affected, or is reasonablylikely to materially affect, the registrants’ internal control over financialreporting; and

 

5.               The registrants’ other certifying officer andI have disclosed, based on our most recent evaluation of internal control overfinancial reporting, to the registrants’ auditors and the audit committee ofregistrants’ board of directors (or persons performing the equivalentfunctions):

 

a.               All significant deficiencies and materialweaknesses in the design or operation of internal control over financialreporting which are reasonably likely to adversely affect the registrants’ability to record, process, summarize and report financial information; and

 

b.              Any fraud, whether or not material, thatinvolves management or other employees who have a significant role in theregistrants’ internal control over financial reporting.

 
| Date:  | March 20, 2006 |   | By:    | /s/ DARIUS G. NEVIN                                                    |   |
|--------|----------------|--------|--------|------------------------------------------------------------------------|--------|
|   |           |   |   | Darius G. Nevin  Executive Vice President and Chief  Financial Officer |   |

 

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