Designed for all kinds of coach and bus No need Additional control box for connecting cameras, DC16V-30V acceptable High resolution 5.6inches Color TFT LCD Screen Full function infrared remote control This system accept up to 3 cameras with A/V input, switch by "AV" button on the unit, among two video input forced for rear view and middle door, the other one for other video signal, such as DVD, game. Mirror picture function Low Power Consumption Video system: PAL / NTSC automatic identify Video output: 1Vp-p (75Ohm) Input Voltage:DC16V-30V Power Consumption:10W Cables: four core aerial cable,30cm?cm Length RCA cable, 10cm?cm Length