This 7 inch colour TFT monitor uses high definition colour LCD panel which offers almosr 4 times more pixels than other standard 7 inch screens. It has 3 AV inputs, 2 of which are sound enabled, which means that you can hook up the monitor to a DVD player, MP4 player, etc. to play videos. Or hook it up to a reverse camera with microphone for better security. It uses standard 4 PIN connectors to connect to the cameras which will provide power to each camera attached. There are trigger wires with adjustable time delays on the inputs to enable indicators to be used to trigger an AV channel. This 7 inch Monitor Reverse Camera Kit is suitable for 12V/24V vehicles. It has voltage overload protection and reverse polarity protection to ensure the monitor and cameras are not damaged by fitting errors. It is mounted by a substantial U-bracket and sunshade to keep the sun off the monitor. Stylish touch button control on front panel of monitor. It has built in light sensor with automatic adjustment, the monitor will dim itself automatically at night to avoid glare. This system also comes with 3 trigger wires for cameras. Once a trigger wire is activated, for example, when the reverse gear is induced it will show the rearview automatically. Or when the vehicle is put on the turn Right signal the monitor will switch to the Right camera automatically to give clear view on the right side of vehicle before making a turn.