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No.
Port Name
Alarm input/output
of NVR52-16P-I/
NVR52-16P-I/L and
NVR52-8P-I/
NVR52-8P-I/L
4
Alarm input/output
of NVR4216-16P-I
Function
They receive signals from external alarm
●
source. Alarm input includes two types; NO
(normal open) and NC (normal close).
Alarm input
port (1-4)
When your alarm input device is using external
●
power, make sure the device and the NVR have
the same GND.
Two groups of alarm output ports (Group 1:
●
NO1-C1, Group 2: NO2-C2). Output alarm
signal to the external alarm device. Make sure
Alarm output
power supply is available for the external alarm
port (NO1-
device.
NO2, C1-C2)
NO: Normal open alarm output port.
●
C: Alarm output public end.
●
GND. Alarm input ground port.
RS485_A port. Control cable A of the 485
●
device. It connects external devices such as
speed dome and PTZ.
RS-485 port
(A, B)
RS485_B port. Control cable B of the 485
●
device. It connects external devices such as
speed dome and PTZ.
They receive signals from external alarm
●
source. Alarm input includes two types; NO
(normal open) and NC (normal close).
Alarm input
port (1-4)
When your alarm input device is using external
●
power, make sure the device and the NVR have
the same GND.
One group of alarm output ports (Group 1:
●
NO1-C1). Output alarm signal to the external
Alarm output
alarm device. Make sure power supply is
port (NO1,
available for the external alarm device.
C1)
NO: Normal open alarm output port.
●
C: Alarm output public end.
●
GND. Alarm input ground port.
Controllable 12 V power
output. It is to control the on-
off alarm relay output. It can be
used to control the device
CTRL
alarm output. At the same
time, it can also be used as the
power input source of some
devices such as alarm detector.
68
User's Manual
The two ports
serve as another
group of alarm
output ports.
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