Patent ID: 6856044

Claim:
A device for protecting a motor vehicle against theft, comprising: a sensor for providing at least one sensor signal; a functional unit; an alarm-signal generator; at least one signal processing unit for evaluating the at least one sensor signal in a first operating mode for generating a triggering signal for the functional unit, the at least one signal processing unit evaluating the at least one sensor signal in a second operating mode for generating a triggering signal for an alarm-signal generator, the second operating mode differing from the first operating mode; and an operating-state detection unit for detecting whether at least one of the motor vehicle is in a deactivated state and an alarm function has been primed, wherein: the second operating mode is activated when at least one of the motor vehicle is in the deactivated state and the alarm function has been primed, and the first operating mode is activated when the motor vehicle is in an activated state.