... OUTPUT Alarm, RS485, RS232 16chs dvr dahua Full HD 1080p hd dvr Specifications of DVR1604HF-A1)Video channels:162)Audio channels ... QCIF(1~25/30fps)Bit Rate32~4096Kb/sImage Quality1~6 level(level 6 is the best, VBR effectively)Recording ModeManual, ... , Spot outputMotion DetectionZones: 396(22×18), Sensitivity: 1~6 (level 6 is highest)Video Loss & Camera BlankSupportAlarm Input16 channelRelay Output3 ...