... zones for privacy masking for each cameraOSDCamera title, time, video loss, camera lock, motion detection, ... etc)Max Remote Users20 Users simultaneouslyRemote OperationMonitor, PTZ control, Playback, System setting, File download, Log ... Redundancy)Auxiliary InterfaceUSB Interface2 ports, 1 for mouse control, 1 for backupRS232keyboard, PC communicationRS485PTZ controlEnvironmentalPower SupplyDC12V ...