1.Display the optical image by an infrared rearview camera equipped at car rear bumper
2.Measuring the distance by sensors,and show it on the 3.5" TFT LCD Monitor,which is put on the dashboard in car driving room.
3.Alarm by three step Bi Bi sound.
4.It is wireless between 3.5 inch LCD Monitor and Main box, the camera connect to the main box
5.Different Size of TFT LCD Monitor and different kinds of car rearview cameras can be matched