Reversing is a tricky business, especially when you are not able to see what is behind you. as soon as you engage reverse gear there are risks everywhere: children playing, tight parking spaces, unfamiliar loading ramps and a whole host of un-foreseen dangers.Vehicle Rear view System give a clear overview of what is happening behind the vehicle, they proactively improve road traffic safety. You can also monitor what is happening inside your vehicle or trailer, and, depending on the system, you can record the pictures using a connected video recorder. This complete system includes the following components: 2 Sets High Resolution Color Wireless CCD Camera, Built-In Infrared Illuminators & 2.4 GHz Transmitter High Resolution 7" Color TFT-LCD Digital CCD CATV, Built-In Speaker, Picture Reversing turn left/right function Power Input DC11~32V controlled by switching box, Built-In 2.4 GHz Manual & Automatic Channel Scanning Receiver All Required Electrical Cables & Connectors and Mounting Brackets If you have any interest,please email to Kerry,Tks!