... Recording BackupUSB,Moved Hard Disk,USB Writer,NetworkNetwork transmission4Channels real-time Network transmission with CIF resolutionRecording PlaySpecial player, Support AVI ... D,PELCO-PHDDSupport 1 SATA HDD, capacity to 2TBHDD Remain Time HintSupportNetwork and Protocol1 RJ-45 10/100M via Ethernet, ... Humidity10%-90%LCD Size15inch, 4:3, CCFL, XGA 4CH real time lcd monitor dvr recorder (GRT-DK7504MH)