Notice : this device is not work for Car bus or Car truck 2.4G wireless car camera video transmitter and receiver for Car GPS 100% brand new，High qualityEasy installationTake one minute get your camera become a wireless cameraWireless 2.4GHz transmitter/receiver set (12-Volt for vehicle installation)Work Range:Up to about 80m(Hollowness)Connects to rear-view camera and front video screenPower: DC 12VTransmitter/Receiver Cable Length:1.5m Convert any reversing camera with a standard phono/RCA connector into a wireless camera with this universal transmitter and receiver kit. Eliminates the need to run a cable the length of the vehicle， just connect the transmitter at the camera end and the receiver at the monitor end. The transmitter also includes a handy pass through for the power so you can connect it inline with your camera. Wireless transmitter with male phono plug and male 2.5mm power plug for supplying power to the camera. Wireless receiver with male phono plug for connection to monitor. Package Includes:1 x 2.4Ghz Transmitter1 x 2.4Ghz Receiver Notice : this device is not work for bus or truck This listing is for the wireless module only.only can use one cameraHow to Install a Camera with the Wireless Module Take out your stock license plate light at the back of your car.Fix the camera to where the stock license plate light was.Connect the built-in license plate light of the camera to where the stock license plate light was connected to get the powerConnect the wireless module (transmitter) to your camera via the two cables - one plug for AV output and one plug for powerConnect the wireless module (transmitter) to the reverse light of your car to get the power - red wire for positive and black wire for negative Connect the wireless module (receiver) to your car monitor - yellow plug for AV input. Connect the wireless module (receiver) to your car battery or cigarette lighter to get the power - red wire for positive and black wire for negativeYou will see the images when your car is in reverse shift. Please note that this module is for in-car GPS not for monitor or DVD.package: 1*wireless receiver1*wireless transmitter