Features: 1.4?channel video input: left view, right view, rear view and front view. Each group of video input has a DC+12V to power the camera. 2.The output shares a video channel and outputs a power cord that triggers the screen. Designed with a power supply protection circuit to protect the camera and the vehicle circuit. 3.Using wireless remote control, single?chip intelligent circuit detection, precise control, stable performance and high reliability. 4.Support various car decoders, add multi?channel cameras and video input. Supporting decoders, and then use DVD or car monitors to solve the blind spot on the car. 5.It can detect the left and right steering and reversing of the car to switch to the corresponding video channel. When exiting the reversing state, the video source switches to display front view 7s (this function can be selected according to the situation), and then returns to the default video output off state. Specification: Item Type: Video Switcher Material: ABS Wide Voltage Power Supply Input: DC8V-16V, large truck: DC24V-12V power supply Remote Control Battery: CR2025 (included), capacity: 170mAh Converter Size: Approx. 80 x 40 x 20mm/3.1 x 1.6 x 0.8in Wireless Remote Control Size: Approx. 40 x 10mm/1.6 x 0.4in Wiring: 1. The blue wire is connected to the reversing light for trigger control 2. The white wire is connected to the left flashing light for trigger control 3. The green wire is connected to the right flashing light for trigger control 4. The red and black wires are +12V power input wires 5: Remote Control: M key-mode switch and exit video output trigger function B button rear view R key right view L key one left view F key-front view (The dual-mode control method of this product, the automatic electronic line can also be disconnected, and the remote control is as convenient as using the remote control. In the process of using the trigger rear view to exit to the front view 7S, it only supports the reversing trigger rear view function, which mainly reduces the misoperation. Remote Control Setting LED Light Instructions (only support products with remote control) 1. When the remote control button presses any key to work, both the indicator light receiver and the remote control LED will flash, indicating that the transceiver is normal. 2. Long press the M button on the remote control for 5 seconds, the receiver LED will flash 2 times, indicating the functions of Mode 1 "Automatically switch to front view after rear view" and Mode 2 "Exit directly after closing back view". Perform switching work. Finally, restart the power to use. 3. Remote control codes matching mode, often press the receiver button for about 3S, the LED light of the receiver goes out, press any button of the remote control, the receiver LED flashes twice, indicating that the codes is completed, and finally restart the power to use. Note: Please allow 1?2mm error due to manual measurement. Thanks for your understanding.