... record, playback, backup, network transmission, mobile phone surveillance. Support backup with USB Flash Disk, Movable hard discus writer, Network. Support 1channel. ... 1 channel playback simultaneously Recording Backup USB,Moved Hard Disk,USB Writer,Network Network Transmission 8 Channels real-time ... email PTZ Supports (PELCO-D,PELCO-P) HDD Support 1 SATA HDD, capacity to 2T Network and Protocol 1 ...