Dahua NVR52-4KS2 Series User Manual page 58

The NVR48-16P-EI/NVR44-16P-EI series rear panel is shown as below.
Name
Power switch —
Power input
—
port
MIC IN Audio input port
MIC OUT Audio output port
VIDEO OUT Video output port CVBS output.
Alarm input port
1–16
1–16
Video output port CVBS output.
Figure 2-74 Rear panel
Figure 2-75 Rear panel
Table 2-25 Ports
Function
Power on-off button.
90~264-12 VAC 12.5 A/-53 V 2.83 A.
Bidirectional talk input port. It is to receive the analog audio
signal output from the devices such as microphone, pickup.
Audio output port. It is to output the analog audio signal to
the devices such as the sound box.
Bidirectional talk output.
●
Audio output on 1-window video monitor.
●
Audio output on 1-window video playback.
●
There are four groups. The first group is 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.
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User's Manual