Dahua VTH1500B-S, Руководство пользователя, Страница: 8 / 18

No. Name Description
1 Alarm Interface 8-ch alarm, 2-ch GND.
2 Communication Port
Power, control signal and A/V differential signal
included.
3 Earphone Interface Only models with earphone have this interface.
Chart 1- 3
Figure 1- 10
No. Name Description Note
1
Alarm input
port
6-ch alarm input N/A
2
Alarm output
port
1-ch alarm output N/A
3 COM
Power, control signal and A/V
differential signal included.
Convertor is provided by
default.
This VTH supports two
methods of power supply,
which may via COM port or
power port. Select either
one.
If supply via power port, and
dial switch 1 and 2 are at
ON, VTH can supply power
to VTO.
4 Power port Power to VTH.
5 Dial switch
Control if supply power to villa
VTO.
Chart 1- 4