1. Digital LED display, can be with "Bi Bi..." alarm
2. System turns on automatically when you begin to reverse.
3. Can show obstacle direction of left or right.
4. Obstacle distance displayed on LED in meter, or inches
5. Fit any make of car or vehicle, van, caravan, trailer and horse boxes.
6. Waterproof and shockproof, anti-fault information technology
7. More-stable two-angle sensor,horizontal and vertical for detection
8. Human speaking warning is optional.