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1.3.2
Alarm Input Port
To connect an alarm:
1.
Connect the positive end (+) of the alarm input device to the alarm input port (ALARM IN
1-16) of the NVR.
2.
Connect the negative end (–) of the alarm input device to the ground end (
) of the NVR.
Figure 1-4
Note
•
There are two alarm input types: NO/NC.
•
When connecting the ground port of the alarm device to the NVR, you can use any of the GND
ports (
).
•
Connect the NC port of the alarm device to the alarm input port (ALARM) of the NVR.
•
When there is peripheral power supplied for the alarm device, please make sure it is grounded
with the NVR.
NVR32xx-P Series User Guide
5