... forward and rewind: x2, x4, x8♦Back up modes: network backup, USB back up♦Support RS-485 PTZ control♦Support ... output♦Multiplex operation: live/recording/playback/network can be operated at the same time♦Telemetry network control: live view, playback, ... channels record at high quality mode:4GB/HBackup SystemUSB, network backupPower SupplyDC:12V/5APower consumption(No HDD)20WDimensions330(L)*245 ...