... /8/16Ch H.264 Full D1 Standalone DVR with HDMI Port Features: 1,8CH H .264 full D1 real-time DVR2 ... before alarming Network Protocol TCP/IP,DHCP,DNS,DDNS,PPPoE,FTP,UPNP,E-mail,IP rights and NTP Ethernet remote view ... 17 kinds protocols RS232 interface YES,built-in RS-232 port Power Source DC 12V Size(mm) 430(W) x 97 ... /8/16Ch H.264 Full D1 Standalone DVR with HDMI Port