Rear Panel - Dahua NVR4108-P Quick Start Manual

1.6 Rear Panel

Please note the following contents based on our 78-8P series product. For detailed operation instruction,
please refer to the User's Manual included in the resources CD.
The rear panel is shown as below. See Figure 1-2.
Please refer to the following sheet for detailed information.
Port Name
Power button
Power input
port
MIC IN
MIC OUT
1-16
NO1 to NO5
C1 to C5
Function
Power on/off button.
/
Input AC 100~240V power.
/
Audio input Bidirectional talk input port. It is to receive
port
the analog audio signal output from the
devices such as mike phone, pickup.
Audio output Audio output port. It is to output the analog
port
audio signal to the devices such as the
sound box.

Alarm input There are four groups. The first group is
port 1-16.
from port 1 to port 4, the second group is
from port 5 to port 8, the third group is
from 9 to 12, and the fourth group is
from 13 to 16. They 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.
Ground end Alarm input ground end.
5-ch alarm 5 groups of alarm output ports. (Group

output port
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
Figure 1-2
5