Dahua NVR41 series, User Manual

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User's Manual
46
Figure 2-65
Figure 2-66
Name Function
Power switch Power on/off button.
Power input port
Input DC 12V/4A.
For NVR42-4KS2 series product only.
Switch power port. Input DC 48/96W.
For NVR42-P-4KS2 series product only.
Input AC90V~264V-12V5A/52V2.5A-190W.
For NVR42-8P-4KS2/NVR42-16P-4KS24K 1U
(S2) with 8 PoE ports/ 4K 1U (S2) with 16 PoE
ports series product only.
MIC IN Audio input port
Bidirectional talk input port. It is to receive the
analog audio signal output from the devices
such as microphone, pickup.
MIC OUT Audio output port
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.
1
～
4
Alarm input port
1
～
4
● 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.
GND Alarm input ground port.
N1, N2
Alarm output port
1
～
2
● 2 groups of alarm output ports. (Group
1:port NO1
～
C1,Group 2:port NO2
～
C2).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.
C1, C2