Dahua NVR2104HS-P-S3 User Manual

No. Port Name Function
GND. Alarm input ground port.
RS-485 port
(A, B)
●
RS485_A port. Control cable A of the 485
device. It connects external devices such as
speed dome and PTZ.
●
RS485_B port. Control cable B of the 485
device. It connects external devices such as
speed dome and PTZ.
Alarm input/output
of NVR4216-16P-I
Alarm input
port (1-4)
●
They receive signals from external alarm
source. Alarm input includes two types; NO
(normal open) and NC (normal close).
●
When your alarm input device is using external
power, make sure the device and the NVR have
the same GND.
Alarm output
port (NO1,
C1)
●
One group of alarm output ports (Group 1:
NO1-C1). Output alarm signal to the external
alarm device. Make sure power supply is
available for the external alarm device.
●
NO: Normal open alarm output port.
●
C: Alarm output public end.
GND. Alarm input ground port.
CTRL
Controllable 12 V power output. It is to
control the on-o 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 alarm detector.
The two
ports
serve as
another
group
of alarm
output
ports.
P
+12 V power output port. It can provide
power to some peripheral devices such
as camera and alarm device. Make sure
the power supply of peripheral device
shall be below 1 A.
5 HDMI port
High denition audio and video signal output port. It transmits
uncompressed high denition video and multiple-channel audio
data to displays with HDMI port.
6 USB port
USB 3.0 port. Connect to devices such as mouse, USB storage
device and USB burner.
7 Network port
10/100/1000 Mbps self-adaptive Ethernet port. Connect to the
network cable.
8
MIC IN
Bidirectional talk input port. It is to receive analog audio signal
from devices such as microphone, sound pickup.
User's Manual
63

Dahua NVR2104HS-P-S3 Specifications

General

Brand	Dahua
Model	NVR2104HS-P-S3
Category	Network Hardware
Language	English