Manual

29
are to receive the signal
from the external alarm
source. There are two types;
NO (normal open)/NC
(normal close).
 When your alarm input
device is using external
power, please make sure
the device and the NVR
have the same ground.
NO1 C1 ～
NO3 C3
Alarm output port
1～3
 3 groups of alarm output
ports. (Group 1：port NO1～
C1,Group 2:port NO2 ～
C2,Group 3:port NO3 ～
C3）).Output alarm signal to
the alarm device. Please
make sure there is power to
the external alarm device.
 NO ： Normal open alarm
output port.
 C：Alarm output public end.
A
RS485 (RS-485)
communication port
RS485_A port. It is the cable A.
You can connect to the control
devices such as speed dome
PTZ.
B
RS485_B.It is the cable B. You
can connect to the control
devices such as speed dome
PTZ.
11
Power input port
Input DC 12V
12
Power switch
Power on/off button.
13
GND
Ground port
2.2.3 General 720P 1.5U Series
This series products’ rear panel is shown as below. See Figure 2-6.
The following figure is based on the 16-channel series product.