... . Support Multiplex operation: live, record, playback, backup, network transmission, mobile phone surveillance. Support backup with USB Flash ... USB,Moved Hard Disk,USB Writer,Network Network Transmission 4 Channels real-time Network transmission with CIF resolution Recording Play ... Zoom Camera, PTZ High Speed Camera, Wireless CCTV Camera,IP CCTV Camera. Hot 4CH H.264 Compression network dvr 8004E