... /16Ch H.264 Full D1 Standalone DVR with HDMI Port Features: 1,8CH H .264 full D1 real ... time, taking up less bandwidth resources 3,GUI OSD interface,more intuitive,easier to use for user-friendly 4 ... Output 8CH audio input,1CH audio output(RCA) VGA Interface YES ,support VGA and BNC can work at ... -in RS485,support 17 kinds protocols RS232 interface YES,built-in RS-232 port Power Source DC 12V Size(mm) ...