2V 24V Wireless Backup System: Built-in Wireless chips 9 Inch Monitor + 4 Wireless Rear Camera. Anti-glare high resolution;color Contrast; Sharpness Picture levels; Support 4 channel signal receiving – 2370ghz / 2390ghz / 2490ghz / 2510ghz. View Camera: with backup guide line for car back up; 120 Wide degree can catch blind spot. 18 IR Night Vision Automatic; perfect clarity image when light is low; IP 67 Waterproof & Shockproof. Can last for longer. It comes with a remote control& instructions, no damage no complex wiring, no need to hire an electrician you could be easy to install by yourself. This product is a testing machine that was previously used for video testing. Almost in a brand new state. 9 inch Wireless Monitor. Support 4 Channel Receive: 2370ghz / 2390ghz / 2490ghz / 2510ghz. High Resolution FULL Color, Sharp Clear picture. With remote control, stand type, mounting on dash. 4 Wireless Signal Rear View Camera. Effective pixels: 800480 pixels (PAL). Lens Angle: 120 degree. Power supply: DC 12V- 24V. Waterproof grade: IP67. Operation Temperature: -20°C+80°C RH95%. Storage Temperature: -30°C+80°C. Current consumption: 90mA Max. Product Weight: 1.9KG. Monitor screen size: 9inch. Monitor frame size: 8.95.6 0.5inch. Camera power cable : 19.5inch. 19 inch Wireless Signal Monitor with antenna. 4 Wireless Rear Camera. 4 Short power cable for rear camera. 1 Stand for monitor. When you test system, keep monitor and camera at least the distance of 2 meters (about 6.56ft). Every camera distance at least 5 meters (16.5ft). Monitor need to be switched to every frequency when you need to monitor every camera cameras. Be attention: Monitor’s harness has 4 (white – blue – yellow – green)reverse trigger wires with mark of each camera frequency, you could choose one camera as a backup camera, please connect one reverse trigger wire to positive when you shift into reverse gear, monitor will show backup image priority(Please refer to wiring diagram). We will try our best to solve any dispute and try our best to satisfy you. If you are not satisfied with our product, please contact first. Because sometimes it will be delayed for traffic or flight jams. Please do not open dispute to us. We care about our valued customers, and will always try our best to help you, if you have any problems.