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Port Name
Function
MIC OUT
Audio output port
Audio output port. It is to output analog audio signal to
devices such as sound box.
Bidirectional talk output.
Audio output for 1-window video monitor.
Audio output for 1-window video playback.
1-16
Alarm input port
(1-16)
There are four groups: 1-4, 5-8, 9-12 and 13-16.
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.
GND
Alarm input ground port.
NO1-NO3
Alarm output port
1-3
Three groups of alarm output ports (NO1-C1;
NO2-C2; NO3-C3).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.
C1-C3
A
RS-485 port
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.
B
CTRL 12V
-
Controllable 12V power output. It is to control the on-off
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.
+12V
-
+12V 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 1A.
Network port
10M/100M/1000Mbps self-adaptive Ethernet port.
Connect to the network cable.
eSATA
eSATA port
External SATA port. It can connect device with SATA port.
You need to set HDD jumper when connecting a HDD.
USB port
USB port
Connect to devices such as mouse, USB storage device
and USB burner.
RS-232
RS-232 port
It is for general COM debugging to configure IP address
and transfer transparent COM data.
HDMI
HDMI port
High definition audio and video signal output port. It
transmits uncompressed high definition video and
multiple-channel audio data to display devices with HDMI