... , backup, network transmission, mobile phone surveillance5. Support backup with USB Flash Disk, Movable hard disk, USB writer, Network ... Disk,USB Writer,NetworkNetwork transmission8Channels real-time Network transmission with CIF resolutionRecording PlaySpecial player, Support AVI file format ... C-50°CWorking Humidity10%-90%LCD Size15inch, 4:3, CCFL, XGA 8CH real time dvr with lcd monitor (GRT-DK7508MH)