... digital video recorder RS 485 Control,RJ45,with VGA, remote control 3G cellphone view,H.264 two way audio DVRnetwork dvr,digital video recorder16CH video ... Input/ RCA ( CH.4 is for external input )Video Output1 Ch Output / BNCAudio Output1 Ch Output / RCAXGA ... , Network, HDD1, HDD2Event ModeAlarm Trigger, Motion Trigger, Video LossRecoridng Duration: 1~60 sec.System LogUp to 2000 recording ...