Reversing is a tricky business, especially when you are not able to see what is behind you. as soon as you engage reverse gear there are risks everywhere: children playing, tight parking spaces, unfamiliar loading ramps and a whole host of un-foreseen dangers.Vehicle Rear view System give a clear overview of what is happening behind the vehicle, they proactively improve road traffic safety. You can also monitor what is happening inside your vehicle or trailer, and, depending on the system, you can record the pictures using a connected video recorder. DF-8083 Water-resistance Day&Night Rear View Color Camera 　1/3inches,420TV Lines,IR Series Distance 5 Meter 　DF-300T 3.5inches Dome Debarkation Color Camera 　1/3inches,420TV Lines 　7 inches Digital LCD Color Video Monitor 　Model: 　SP-MV7010 　Display component:　Color TFT-LCD 　Screen dimensions:　7 inches 　Color system: PAL/NTSC (SECAM system can be made to order) 　Sound system: B/G D/K I (M system can be to order) 　Video input: 1VP-P one way 　Five languages OSD menu: Chinese,English,Russian,German and Arabic 　Picture turn up/down or turn left/right function 　Audio output: 0.3W (Max) 　Connectors: external antenna jack,earphone jack, 　audio/video(AV)input jack,external power input jack. 　Power supply: 1.AC power-AC adaper 　2.Automobile storage battery(12V)automobile adapter. 　Power consumption: around 8W 　Power controled by suitching box 　Input voltage:DC11V-DC36V 　Output voltage: DC12V+10% 　Output current: 1.5A 　1: 2 Channel Video input, one of them will change into reverse position when car takes back. 　2: Super Autiuter interferences, enough power supply when car starter begins to work. 　3: Built-in protection device when it stays in high temperature and exceeding normal current. 　Dimension: 120mm*90mm*40mm 　Weight: 500g 　Wire Length: 15 Meter(electrical outlet for)