22
Port Name Connection Function
MIC OUT Audio output port RCA Audio output port. Output analog audio signal to
the devices such as sound box.
MIC IN Audio input port RCA Bidirectional talk input port. Receive the analog
signal from the devices such as speaker or
pickup.
1～16
Alarm input port.
z 4 groups of alarm output ports. (Group 1：
port 1～4,Group 2：Port 5～8，Group 3：
port 9～12，Group 4：port 13～16).Output
alarm signal to the alarm device. Please
make sure there is power to the external
alarm device.
z When your alarm input device is using
external power, please make sure the
device and the NVR have the same ground.
Alarm input port
ground end
z Alarm input ground end.
NO1 to NO5
C1 to C5
NC5
Alarm output port
1～5
z
5 groups of alarm output ports. (Group 1：port
NO1～C1,Group 2:port NO2～C2,Group
3:port NO3～C3.group 4 port NO4～C4、
Group 5：port NO5、C5、NC5).Output alarm
signal to the alarm device. Please make sure
there is power to the external alarm device.
z
NO：Normal open alarm output port.
z
C：Alarm output public end.
z NC: Normal close alarm output port.
A RS485_A port. It is the cable A. You can
connect to the control devices such as speed
dome PTZ.
B
RS485 port
I/O port
RS485_B.It is the cable B. You can connect to
the control devices such as speed dome PTZ.
CTRL 12V Controllable 12V power output. It is to control
the on-off relay output. You can use it to enable
device alarm function.
It can also be used as the power input for some
alarm devices such as the smoke detector.
+12V +12V power output port. It is to provide the
power to the peripheral devices such as camera
or alarm device. The connected device current
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