Front Panel and Rear Panel 46
Name
Function
GND
Alarm input ground port.
NO1
～
NO5
Alarm output port
1
～
5
5 groups of alarm output ports. (Group 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 device. Please make sure there is power
to the external alarm device.
NO: Normal open alarm output port.
C: Alarm output public end.
NC: Normal close alarm output port.
C1
～
C5
NC5
A
RS-485
communication
port
RS485_A port. It is the cable A. You can connect to
the control devices such as speed dome PTZ.
B
RS485_B.It is the cable B. You can connect to the
control devices such as speed dome PTZ.
CTRL 12V
/
Controller 12V power output. It is to control the
on-off alarm relay output. It can be used to control
the device alarm output. At the same time, it can
also be used as the power input source of some
devices such as the alarm detector.
+12V
/
+12V power output port. It can provide the power to
some peripheral devices such as the camera or the
alarm device. Please note the supplying power
shall be below 1A.
Network port
One 10M/100M/1000Mbps self-adaptive Ethernet
port. Connect to the network cable.
eSATA
eSATA port
External SATA port. It can connect to the device of
the SATA port. Please jump the HDD when there is
peripheral connected HDD.
USB port
USB port. Connect to mouse, USB storage device,
USB burner and etc.
RS-232
RS-232
debug
COM.
It is for general COM debug to configure IP address
or transfer transparent COM data.
HDMI
High
Definition
Media Interface
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.
VGA
VGA video output
port
VGA video output port. Output analog video signal.
It can connect to the monitor to view analog video.
PoE
PORTS
PoE port
Built-in Switch. Support PoE.
For PoE series product, you can use this port to
provide power to the network camera.
2.2.18
NVR21-W-4KS2 Series
The rear panel is shown as below. See Figure 2-67.
