No. Port Name Function
GND. Alarm input ground port.
RS-485 port
(A, B)
●
RS485_A port. Control cable A of the 485
device. It connects external devices such as
speed dome and PTZ.
●
RS485_B port. Control cable B of the 485
device. It connects external devices such as
speed dome and PTZ.
Alarm input/output
of NVR4216-16P-I
Alarm input
port (1-4)
●
They receive signals from external alarm
source. Alarm input includes two types; NO
(normal open) and NC (normal close).
●
When your alarm input device is using external
power, make sure the device and the NVR have
the same GND.
Alarm output
port (NO1,
C1)
●
One group of alarm output ports (Group 1:
NO1-C1). Output alarm signal to the external
alarm device. Make sure power supply is
available for the external alarm device.
●
NO: Normal open alarm output port.
●
C: Alarm output public end.
GND. Alarm input ground port.
CTRL
Controllable 12 V power
output. It is to control the on-
o alarm relay output. It can be
used to control the device
alarm output. At the same
time, it can also be used as the
power input source of some
devices such as alarm detector.
The two ports
serve as another
group of alarm
output ports.
P
+12 V power output port. It can
provide power to some
peripheral devices such as
camera and alarm device. Make
sure the power supply of
peripheral device shall be
below 1 A.
5 HDMI port
High denition audio and video signal output port. It transmits
uncompressed high denition video and multiple-channel audio
data to displays with HDMI port.
6 USB port
USB 3.0 port. Connect to devices such as mouse, USB storage
device and USB burner.
7 Network port
10/100/1000 Mbps self-adaptive Ethernet port. Connect to the
network cable.
8
MIC IN
Bidirectional talk input port. It is to receive analog audio signal
from devices such as microphone, sound pickup.
User's Manual
70
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