Dahua Gigabit Industrial Managed Switch Quick Start Guide
3.2.6
Alarm Terminal
Figure 3-11
The alarm terminal is located on the side panel of the device, which is used for alarm output. When the
device works normally, the alarm relay NO end is closed and NC end is disconnected; when alarm
happens, the NO end is disconnected and the NC end is closed.
Note
C pin is the NO switch; NO pin is the NC switch. When the device is operating, C pin is closed and NO
pin is disconnected; when alarm happens, C pin is disconnected and NO pin is closed.
The NO and NC of relay can output via connection terminal.
Please refer to
Table 3-3 for the external port electrical parameters of the relay.
Parameter
Value
Max. voltage
AC 125V/DC 60V
Max. current
2A
Max. power
60W
Max. insulation and voltage resistance
2kV
Table 3-3
Operation Steps
The operation steps of wiring installation are shown as follows.
Step 1
Take off the alarm terminal plug from the device.
Step 2
Insert the two wires of the alarm terminal into plugs of alarm terminal according to the description above
and fix the wires firmly.
Step 3
Insert the alarm terminal plug which is connected to cable back to the corresponding alarm terminal
socket of the device.
