1When the car enters the "R" gear and the reversing lights, the visual radar system automatically starts. When the vehicle enters the obstacle 2 meters, the visual radar system starts to indicate the obstacle distance. 2Cpu anti?collision technology, anti?strong electromagnetic interference, suitable for high?definition video wide temperature range, wide viewing angle. Osd color reversible scale line, low light visual, intelligent fill light correction, work all day. 3The reversing image and obstacle distance data are displayed on the monitor at the same time, so that you can accurately grasp the car condition. And has excellent night vision and waterproof effect. 4Hanging installation, directly into the Dvd reversing video input interface. It has the advantages of moisture?proof, dust?proof and shock?proof. 5External buzzer, when the car enters a distance of 1.2 meters, the buzzer starts to alarm