Dahua VTO3211D-P

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No.
Name
Description
3
IR Fill light
Provides extra IR light for the camera when it
is dark.
4
Light sensor
Detects ambient lighting condition.
5
Call button
Press to call VTH or the management center.
6
Speaker
Outputs audio.
2.4.2 Rear Panel
VTO2101E-P
Table 2-8 Rear panel description
No.
Name
Description
1
Ethernet port
Connects to the network with Ethernet cable.
2
RS-485 ports
See Figure 2-16 and Table 2-9.
3
Cable tray
You can pull the cable through the cable tray.
Connecting cable
Table 2-9 Port description
Name
Description
NO
Normally open port of lock
NC
Normally closed port of lock
COM
Public port of lock
ALARM IN
Reserved for future use