194SN Icon Name Note12 AUDIOOUTAudio outputportConnect to video output device such as sound box.2.2.29 HCVR720XA-S2 SeriesThe HCVR7204A-S2 products’ rear panel is shown as below. See Figure 2-72.Figure 2-72The HCVR7208A-S2 products’ rear panel is shown as below. See Figure 2-73.Figure 2-73Please refer to the following sheet for detailed information.SN Icon Name Note1 Power switch Power on/off button.2 1～8(16) Alarm inputport 1～8(16) There are two types; NO (normal open)/NC(normal close). When your alarm input device is using externalpower, please make sure the device and the DVRhave the same ground.NO1～NO3 Alarm outputport 1～3 3 groups of alarm output ports. (Group 1：portNO1～C1,Group 2:port NO2～C2,Group 3:portNO3～C3）).Output alarm signal to the alarmdevice. Please make sure there is power to theexternal alarm device. NO：Normal open alarm output port. C：Alarm output public end.C1～C3
