Detailed description of the product：

1. 1   It is wireless between 3.5 inch monitor and main box,the camera connect to main box.
2. 2 Display the optical videos by a camera equipped car back.
3. 3 Measure the obstacle distance by sensors and show on the 3.5” TFT monitor.
4. 4 You can tell the obstacle at right or left from TFT Monitor.
5. 5 With night infrared camera,you can see the obstacle even during night.