Alarm Input And Output Port; Alarm Relay Specifications - Dahua DHI-NVR5208-4KS2 User Manual


There are two alarm input types: NO/NC.

When connect 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 supplying for the alarm device, please make sure it is earthed with
the NVR.

2.3.3 Alarm input and output port


There is peripheral power supplying for the external alarm device.

In case overload may result in NVR damage, please refer to the following relay specifications for
detailed information.

A/B cable of the RS485 is for the A/B cable connection of the speed PTZ.

2.3.4 Alarm relay specifications

Model:
Material of the
touch
Rating
(Resistance
Load)
Insulation
Figure 2-70
JRC-27F
Silver
Rated switch capacity
Maximum switch power
Maximum switch voltage
Maximum switch currency
Between touches with same
polarity
Table 2-33
30VDC 2A, 125VAC 1A
125VA 160W
250VAC, 220VDC
1A
1000VAC 1minute
Front Panel and Rear Panel 50