Installation Guide: 1. please turn off FM radio,wifi or other electronic product to avoid the signal interference.2. Please press the 1st button on monitor or press video select on remote to AV2 which works for wireless camera.3. There are 2 channels for the cameras:2410(with guide lines for reversing) and 2470(without guide lines for monitoring). Please switch each by pressing the 2nd button on monitor or pressing model Select on remote4. For maximum signal point the antennas towards each other5. Keep monitor and camera at least the distance of 2 meters(about 78.7"). or camera and monitor will interfere with each other6. The IR camera has night vision, it will turn red when light is low NOTE: If you buy one camera, we will ship the camera with the reversing monitoring line by default (camera 2410) Features: >7inch wireless HD Car monitor display,Built-in 2.4GHz Wireless Receiver,Can be used with 1-4 cameras,(need change the frequencies during using) suitable for multiple work scenarios. >Built-in 2.4GHz wireless video transmitter,The signal can reach 100 meters in an open area. >Two way of using , adjustable bracket may accord your working habits,let your driving more comfortable. Monitor Specifications: Display Screen: 7 inch Color TFT LCD Transmission distance: 50 meters Resolution: 800 x 480 Pixels Operation: key operation and remote control Screen ratio 16:9/4:3 adjustable Brightness : 350cd/m2 Contrast: 300 Housing Material: ABS Video Frequency: PAL/NTSC Power supply: 12V-35V Working Temperature: 0 to 60 degrees Storage Temperature: -10 to 80 degrees C Product Dimensions(L x W x D): 172 x 114 x 22mm Wireless transmission: built-in 2.4GHz wireless video transmitter 7 inch Wireless Monitor HD Car Monitor Display with Wireless Connection Function. Very Easy Installation