EXHIBIT 12.1    PROTECTION ONE, INC.    COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES    (IN THOUSANDS)

|                                                      | PROTECTION ONE                           |                                         | PREDECESSOR |       
|----------------------------------------------------- | ---------------------------------------- | --------------------------------------- | ----------- | ------
|
|Earnings:                                             |                                          |                                         |             |       
|                                                      | Net loss                                 | $                                       | (80,736     | )     
|                                                      | Adjustments:                             |                                         |             |       
|                                                      |                                          | Extraordinary loss                      |             | 1,691 
|                                                      |                                          | Consolidated provision for income taxes |             | 27,108
|                                                      |                                          | Fixed charges less interest income      |             | 87,037
|                                                      |                                          |                                         |             |       
|Earnings as adjusted (A)                              |                                          | 35,100                                  |             |       
|                                                      |                                          |                                         |             |       
|Fixed Charges:                                        |                                          |                                         |             |       
|                                                      | Interest on debt and capitalized leases  |                                         | 84,691      |       
|                                                      | Amortization of deferred financing costs |                                         | 2,346       |       
|                                                      |                                          |                                         |             |       
|Fixed Charges (B)                                     |                                          | 87,037                                  |             |       
|                                                      |                                          |                                         |             |       
|Ratio of earnings to fixed charges
(A) divided by (B) |                                          |                                         |             |       
|Deficiency of earnings to fixed charges               |                                          | 51,937                                  |             |       

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