Nvr21-P-I/Nvr21-P-I2 Series - Dahua VR21-8P-4KS2 Series User Manual

Port Name
1–4
N1, N2
C1, C2

2.2.14 NVR21-P-I/NVR21-P-I2 Series

The figure is for reference only.
Port Name
HDMI
Connection
Alarm input port 1–4
GND
Alarm output port 1–
2
Network port
Power input port
Power switch
Figure 2-68 Rear panel
Table 2-28 Ports
Connection
USB port
High Definition
Media Interface
41
Function
● 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.
Alarm input ground port.
● 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.
10/100 Mbps self-adaptive Ethernet port. Connect
to the network cable.
Power socket.
Power on/off button.
Function
USB port. Connect to mouse, USB storage device
and more.
High definition audio and video signal output
port. It transmits uncompressed high definition
video and multiple-channel data to the HDMI port
of the display device. HDMI version is 1.4.
User's Manual