Parking sensor 4 Buzzer black

Parking assist system is a device that supports parking and reversing the car. It works on the principle of sonar - emits ultrasonic waves that allows us, after reflection from the obstacle, to conclude what is the distance between car and obstacle. At the time of withdrawal device correctly detects obstacles and warns the driver. Buzzer can work in 3 sound modes: high, low and totally silent. The mode change is made by means of a small interuptor in the housing. The set includes 4 black sensors ø 22 mm buzzer - emitting audible signals main unit the hole saw to drill holes in the bumper instruction manual Full specification: Range/working sensitivity 0-2,5m Power supply 12V Working frequency 40KHz Work temperature -30 ° C - +70 ° C