Dahua Pro Series - Page 14

Design 3
SN
Port
Port Name
Connector
Function Description
4
I/O
I/O port
—
Alarm signal input/output.
5
POWER
Power input
port
—
Input 12V DC.
Actual use shall be in accordance with
device label instruction. Otherwise, it may
cause damage to the device.
6
RS485_A
(Yellow)
RS-485
—
RS-485 port, control external PTZ and so
on.
RS485_A
(Orange)
7
VIDEO
OUT
Video output
port
BNC
Generally it outputs analog video signal, it
can connect to TV monitor to check
image.
Please refer to Table 2-2 for introduction of I/O port function.
Table 2-2 I/O port description
Port
Color
Cable port name
Function description
I/O port
Green
ALARM_COM1
Alarm output common port.
Use ALARM_COM1 together with ALARM_NO1
and use ALARM_COM2 together with
ALARM_NO2.
Pink
ALARM_COM2
Blue
ALARM_NO1
Alarm output port, output alarm signal to

alarm device.
NO: Normally open alarm output port.

Use ALARM_NO1 together with ALARM_COM1
and use ALARM_ NO2 together with ALARM_
COM2.
Gray
ALARM_NO2
Purple
ALARM_IN1
Alarm input ports; receive the on-off signal of
external alarm source.
Brown
ALARM_IN2
Green &
White
ALARM_GND
Grounded terminal.