... 0. Support SATA HDD&USB disk RS485 PTZ controller Model16CHVideoInput16 channel, BNC(1.0Vp-p, 75?)StandardNTSC(525Line, 60f/s ... 1 VGA, 1 HDMIAudioInput4 channel, BNC(200-2800mV, 30KΩ)Channel 1 for bidirectional-talk input synchronouslyOutput1 channel, BNC(200-3000mV, 5KΩ) ... Interval1~120 min. (default: 60 min.), Pre-record: 1~30 sec., Post-record: 10~300 sec.Video Detection & AlarmTrigger ...