User's Manual
32
Name Function
NC5
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.
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 (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.
P (+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.
2.2.10 NVR21-W-4KS2 Series
The rear panel is shown as below. See Figure 2-54.
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