Hcvr52Xxl - Dahua HCVR5204A Series User Manual

NO1
NO3 C3
A
B
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12
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2.2.3 HCVR52XXL

The 5208L series products' rear panel is shown as below. See Figure 2-6.
Alarm output port
C1 ～
1～3
RS485 (RS-485)
communication port
Power input port
Power switch
GND
are to receive the signal
from the external
source. There are two types;
NO (normal
(normal close).

When your alarm
device is using external
power, please make sure
the device and the NVR
have the same ground.

3 groups of alarm output
ports. (Group 1：port NO1～
2:port NO2 ～
C1,Group
3:port NO3 ～
C2,Group
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.
RS485_A port. It is the cable A.
You can connect to the control
devices such as speed dome
PTZ.
RS485_B.It is the cable B. You
can connect to
devices such as speed dome
PTZ.
Input DC 12V
Power on/off button.
Ground port
alarm
open)/NC
input
the control
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