... port (10/100/1000M)Network FunctionsHTTP, TCP/IP, UPNP, RTSP, UDP, SMTP, NTP, DHCP, DNS, IP Filter, PPPOE, DDNS, FTP, Alarm ... controlEnvironmentalPower SupplyDC 12V / 3APower Consumption6W (Exclude HDD)Working Environment0°C ~+55°C / 10~90%RH / 86~106kpaDimension350 × 58 × 272mm(W ... 3.8kg (Exclude HDD) 4ch stand alone DVR with H.264 dual-stream video compression,4 Channel D1 real-time preview ,DVD-RW ...