... Operation:live & record & playback & backup & network H.264 compression format hd dvr recordersName: 16 Channel H.264 Stand-alone DVRModel: PST-DVR616V ... /IP, DHCP & static IP PTZ Contro RS485,preset positions operation HD StorageSATA×4 Backup SystemUSB,CD-RW,network backup,AVI format ... -30 degree C ~ 60 degree C 16 Channel H.264 hd dvr recorders