A small light (dot) indicates proper functioning of the system after being activated
Digital distance display of obstacle
LED#####s (green,yellow and red) indicate different distances as well as orientation of the obstacle
Different alert beeping intervals indicate different distances of the obstacle
Low power expend design
Auto run when car begin to reverse,3 kinds   of alarm voice.Buzzer Outside and alarm   volume>78DB
Errors prevent technology
8 sensors
Detecting range from 0.1¡«2.0M
The detector endure temperature: -20¡«80¡æ
speech (offer)