... , recording, playback, backup & remote accessControl ModeUSB mouse, IR remote control, Keyboard, NetworkVideoInput4 channel, BNC(1.0Vp-p, 75)StandardNTSC(525Line, 60f ... InterfaceUSB Interface2 ports, 1 for mouse control, 1 for backupRS232keyboard, PC communicationRS485PTZ controlEnvironmentalPower SupplyAC 100~240 V, 50/60 HzPower Consumption25WWorking ...