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ULTRASONIC BACK-UP ALARM Audible warning alerts you to unseen objects when backing up 2 ultrasonic sensors provide maximum coverage — each sensor monitors a 30° wide area up to 5 feet behind vehicle Piezo siren beeps when you shift into reverse and beeps faster as you approach objects behind you Unit wires directly to backup lights and automatically activates when vehicle is shifted into reverse Easy to install and economical Acts as radar for your vehicle 2 sensors install on back of vehicle. With included double-sided tape, mount (1) sensors to the outside rear of vehicle, (2) control module to the inside of the trunk or back of the vehicle and (3) Piezo siren inside vehicle. Wire components and you're done. When sensors detect an object, the siren beeps to alert you. As vehicle moves closer to object, beeping increases. Easy to install — some drilling may be required for wiring sensor to control module. Control module, Piezo alarm siren and 2 sensors mount with double-sided tape (included). Module: 4" x 3" x 1" thick. Piezo siren: 2" x 1" x 1/2" thick. Each sensor is 1-1/2"W x 1"H x 1/2" thick.
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