Dahua Technology DHI-VTH1550CH-S User Manual

Press disarm symbol at the lower right corner of the main interface.
Enter arm and disarm password; press [OK].
If you are forced to enter disarm password in case of emergencies, enter anti-hijacking
password, which is the reversed arm password. The system will disarm, and at the same
time, upload alarm info to management center/platform.

Dahua Technology DHI-VTH1550CH-S Specifications

General

Brand	Dahua Technology
Model	DHI-VTH1550CH-S
Category	Intercom System
Language	English