... view,H.264 two way audio DVRnetwork dvr,digital video recorder16CH video and 3CH Audio 1CH Two way Audio real ... FormatNTSCPALVideo Input16 Ch Input / BNCAudio Input4 Ch Input/ RCA ( CH.4 is for external input )Video Output1 Ch Output / BNCAudio Output1 Ch Output / ... , Network, HDD1, HDD2Event ModeAlarm Trigger, Motion Trigger, Video LossRecoridng Duration: 1~60 sec.System LogUp to 2000 recording ...