... stereo surround power amplifier, touch KTV monitor touch screenSurface acoustic wave touch screen, ... °Humidity:40% ~ 80%Network InterfaceSupply RJ11,RJ45,GPRS etc Network InterfaceDimensions17" 420mm×470mm×1200mmOptional ... functionsHost, swiping card slots, bar code scanning, keypad, micro-printer, fingerprint roll machine touch KTV monitor ...