Four-channel video input: left-view, right-view, rear-view and front-view. Each group of video inputs has a DC+12V to power the camera._x000D_ The output shares a video channel and outputs a power line that triggers the screen._x000D_ Adopt wireless remote control, MCU intelligent circuit detection and precise control._x000D_ The product is designed with a power supply protection circuit to protect the camera and the vehicle circuit._x000D_ Wide voltage power supply input DC8V-16V, large truck DC24V to 12V power supply (optional)._x000D_ _x000D_ 360 panoramic intelligent converter size: 80mm x 35mm x 20mm._x000D_ Wireless remote control size: 40mm x 10mm_x000D_ 100% new and high quality_x000D_ Product Description: 4 to 1 Intelligent 360 Panoramic Switcher is supposed to add more video inputs for cameras when it's connected with video interface for different car models. It's sort of DIY solution for customers with easy installation. Supporting decoders, and then use DVD or car monitors to solve the blind spot on the car_x000D_ Colour: black_x000D_ Material: ABS plastic_x000D_ _x000D_ Package Contents:_x000D_ 1 x Video switcher_x000D_ 1 x Remote control_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_