Digital wireless two-channel video transmission system for port operation vehicles, , harvesters, and vehicle equipment. 7Digital wireless transmission video signal. Strong anti-interference. High image definition. Wireless open video transmission distance up to 100 meters. Wiring-free installation, simple and convenient. Display working voltage DC9-24V. The display has a built-in 2.4GHz digital wireless video signal receiver, anti-load-dump pulse voltage design, and protection circuit.The camera has a built-in 2.4GHz digital wireless video signal transmitter. Camera waterproof IP67, with infrared night vision function, working voltage DC9-36V.Products are used in public transportation buses, long-distance passenger buses, school buses, agricultural , heavy freight trucks, rail transit vehicles, municipal road machinery and equipment vehicles, airport equipment vehicles, port and terminal tower machinery and stackers, security vehicles, and fire protection vehicles, factory supermarket forklifts, mining machinery and equipment vehicles, etc.2.4G digital Imaging device 1/4 StandardNTSC: 648*488 pixels: 648*488 pixelsResolution 420 TVLLens: 2.5mmMinimum illumination 0Lux (LED ON)Infrared light 18pcsNight vision distance 15 metersWaterproof grade IP67Angle 120 degreeInput voltage 12/24/36V DCWorking temperature -20 Celsius ~ + 70 CelsiusVideo decompression MPEG 4Radio power 18 dBmTransmission rate 12 MbpsFitment: UniversalColour: as shownMaterial: ABSPackage Contents:1 * Car Monitor1 * Camera2 * Antennas2 * Power Cable1 * Mount Bracket1 * Lighter1 * Controler the above package content, other products are not included.Note: Light 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.