7'' digital TFT LCD, TFT resolution: 800*480, Hands free, Mechanical Keys with touch screen, Surface-mounted, External power adapter, 4 wires connection, Support 3 video channels, Support maximum length of line connection: 100m, Power (Rated PowerStandby Power): AC100-240V, Power consumption: 2W-9W, Dimension: 210*116*25mm,