Dahua NVR608-32-4KS2 - Alarm Input Port; Alarm Output Port; Alarm Relay Specifications

22
Icon Note
1～4
ALARM 1 to ALARM 4. The alarm becomes active in low
voltage.
NO1 C1，NO2 C2，NO3 C3，NO4
C4
Four
groups of normal open activation output (on/off
button)
GND
2.4.2 Alarm Input Port
Please refer to the following sheet for more information.
 Grounding alarm inputs. Normal open or Normal close type)
 Please parallel connect COM end and GND end of the alarm detector (Provide external power to the
alarm detector).
 Please parallel connect the Ground of the NVR and the ground of the alarm detector.
 Please connect the NC port of the alarm sensor to the NVR alarm input(ALARM)
 Use the same ground with that of NVR if you use external power to the alarm device.
Figure 2-18
2.4.3 Alarm Output Port
 Provide power to peripheral alarm device.
 To avoid overloading, please read the following relay parameters sheet carefully.
 RS485 A/B cable is for the A/B cable of the PTZ decoder.
2.4.4 Alarm Relay Specifications
Model:
JRC-27F
Material of the
contact
Silver
Rating value
(Resistance
load）
Contact load
30V DC 1A，125V AC 0.5A
Maximum switch power
62.5VA/30W
Maximum switch voltage
125V AC，60V DC
Maximum switch current
2A
Insulation Between loop and the contact
1000V AC 1 minue
Between breaking contact
400V AC 1 minue