Description: Car Camera Video Control Box 1) 4-camera input terminals input, for rear view camera/front/left/right camera view. 2 video output terminals:output for DVR and monitor 2) Automatically switch to the rear view camera (image) when put your car in reverse 3) Automatically switch to the side +rear+ front view(3 image same time) when turning left and right. 4) Manual switch could showing 4 camera in quad image. 5) Power supply: 12V DC 6) Power consumption: Less than 5W 7)TV input and output system:NTSC/PAL 8)With 12V DC power supply for each camera. Working temperature: -30~55'C Operation Temperature: -40~85’C