Easy to DIY. The system comes with a switched lighter adapter for monitor plug-and-play. The reversing camera is connected to the reversing light power supply or other 12-24V power supply. IP67 waterproof level can deal with marine environment. Hard metal case camera, waterproof and mud proof. It lasts without heating up, so you can always show the back view. The monitor can connect multiple cameras via RCA cables. Connect to the yellow RCA connector of AV1 (AV2 of the wireless camera). The white connector is useless and does not need to be connected. Color: Black Material: ABS+metal Name: 2.4GHz Analog Wireless 7inch Display Operating frequency: 2400-2483.5 Mhz Transmission distance: 10 meters Compression Format: MPEG 4 Video Transmit frequency: 18 dBm Transfer speed: 12 Mbps FHSS: Frequency Hopping Spread Spectrum Jump rate: 1200/S Screen size: 7 inches 16:9 Resolution: 800RGB x480 dots TV system: PAL/NTSC Working voltage: 12V/24V DC Power: 8.64W Operating temperature: -10C to +65C 2.4GHz analog wireless camera: Standard NTSC: 510 x 492 pixels, PAL: 510 x 582 pixels Resolution: 420 TV lines Lens: 2.5mm Minimum Illumination: 0Lux (LED ON) Infrared light: 18 Night vision distance: 10 meters Waterproof: IP69 Viewing angle: 120 Working voltage: 12/24V DC Working temperature: -20~+70, Package Contents: 1 x 7-inch Wireless Car Monitor 1 x Camera 1 X Remote control 1 x Mounting Bracket 1 x Car Charger Only the above package content, other products are not included. Note: Light reflection 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.