1.Controlled by intellect microchip of USA. 2.Low power expend design. 3.Auto run when car begin to reverse,3kinds of buzzer alarm voice inside and alarm Volume＞78dB. 4.Display the distance by twin number. 5.3 color & double 5 sections display the barriers in left & right, dispaly the temperature in car When it standby. 6.Errors prevent technology. 7.4 Wide sign detectors 8.Detecting range: 0.1-1.5m. 9.The detector endure temperature:-40℃-+80℃. 10.Shockproof and wetproof. 11. 3M original glue. 12.Detector color: Black,White,Red,Purple,Blue,Yellow,Green,Silver etc.