Dahua ITC237-PW1A-IRZ User Manual page 9

No. Port
①
Audio Out
②
Audio In
③
-
ALARM_NO
ALARM_COM
④
ALARM_IN1
ALARM_IN2
ALARM_GND
⑤
POWER
Figure 2- 3
Function
Audio output port Output audio signal (not available)
Audio input port Input audio signal (not available)
Network port Connect to Ethernet.
Alarm output port Output alarm signal
Alarm input port 1
Connect to 1-ch, as signal coil IO
Alarm input port 2 snapshot; connect to 1-ch and 2-
ch. As dual coil IO snapshot
Alarm input GND
Power port Input AC24V power
4