2.3.1.3 NVR724 Series
You can refer to the following sheet for alarm input and output information. See Figure 2-19.
Figure 2-19
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
2.3.2
Alarm input and output 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 2-20
2.3.3
Alarm Output Port
Provide power to peripheral alarm device.
25
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