Dahua NVR21-4KS3 Series User Manual page 55

The NVR42-16P-4KS2/NVR42-16P-4KS2/L/NVR42-16P-4KS3 series rear panel is shown as below.
Name
/
MIC IN
MIC OUT
1–4
N1, N2
Figure 2-67 Rear panel
Figure 2-68 Rear panel
Table 2-22 Rear panel description
Function
Power switch Power on/off button.
Power socket.
● For NVR42-4KS2/NVR42-EI/NVR42-4KS3 series,
● For NVR42-P-4KS2 series, input 48 VDC/96 W.
● For NVR42-P-EI/NVR42-P-4KS3 series, input 53
Power input port
Input 90~264-12 VAC 5 A/52 V 2.5 A-190 W.
For NVR42-8P-4KS2/NVR42-16P-4KS2/NVR42-8P-
EI/NVR42-8P-4KS3/NVR42-16P-4KS3 series product
only.
Bidirectional talk input port. It is to receive the
Audio input port 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 port
● Audio output on 1-window video monitor.
●
● There are two types; NO (normal open)/NC
Alarm input port 1–
● When your alarm input device is using external
4
GND Alarm input ground port.
Alarm output port
35
input 12 VDC/4 A.
VDC/1.81 A.
Audio output on 1-window video playback.
(normal close).
power, please make sure the device and the
NVR have the same ground.
User's Manual