Alarm Connection; Alarm Port - Dahua NVR21-S2 Series User Manual

Name
+12V
eSATA
RS-232
HDMI
VGA
PoE
PORTS

2.3 Alarm Connection

2.3.1 Alarm Port

The alarm port is shown as below. See Figure 2-65. The following figure for reference only.
Icon
Function
+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 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 debug It is for general COM debug to configure IP address
COM. or transfer transparent COM data.
High definition audio and video signal output port. It
High Definition transmits uncompressed high definition video and
Media Interface multiple-channel data to the HDMI port of the
display device. HDMI version is 1.4.
VGA video output VGA video output port. Output analog video signal.
port It can connect to the monitor to view analog video.
Built-in Switch. Support PoE.
PoE port For PoE series product, you can use this port to
provide power to the network camera.
Figure 2-65
Function
106