Specifications:

* Buzzer beep warning parking sensor, with "Bi Bi..."Voice alerting, Large Volume Buzzer.  Three stages indicating, the closer the obstacle, the faster the beeping frequency* Turns on automatically when you begin to reverse. * Fit any make of car or vehicle, van, caravan, trailer and horse boxes. * Waterproof and shockproof, anti-fault information technology * High quality and easy to install * Human speaking warning is optional. * All kinds of sensor colors for optional.* waterproof connected sensor for potional.* 2,4,6,8 sensors available for optional

Car Buzzer Beep Parking Sensor(UN-11603)