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Ultrasonic Sensors are alternative for microwave radar sensor, for use with your car alarm. An Ultrasonic sound sensor employs the same theory as the microwave sensor but by the use of sound instead of microwaves.
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Ultrasonic Sensors are alternative for microwave radar sensor, for use with your car alarm. An Ultrasonic sound sensor employs the same theory as the microwave sensor but by the use ofsound instead of microwaves. The ultrasonic sound sensor waits for an ultrasonic echo reflected off a body entering within its range. The ultrasonic sensor kits Works by monitoring air-pressure levels. The act of opening a door or forcing a window creates a change in pressure which triggers the alarm..
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