CARALARM
Car alarm
A car alarm is an electronic device installed in a vehicle in an attempt to discourage theft of the vehicle itself, its contents, or both. Car alarms work by emitting high-volume sound when the conditions necessary for triggering are met, as well as by flashing some of the vehicle's lights, and notifying the car's owner via a paging system and interrupting various electrical circuits necessary for the car to start.The above text is a snippet from Wikipedia: Car alarm
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