Dahua Digital VTH

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VTH ring setup
Tap text box to select rings, and tap and to set the volume.
4.6.1.3 Alarm Ring
Set the ring when the VTH gives an alarm.
Tap Setting.
Enter login password and tap OK.
Default login password is 123456. Please refer to "4.6.6.3 Password Setting" for details.
Select Ring > Alarm Ring Setup.
Alarm ring