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![](https://files.manualsfile.com/91658739-vth8641kms-wp/bg61.png)
Figure 4-7 A call from a VTO
4.4 Monitoring
Background Information
After a VTO is added, you can view its live video, have two-way audio talk, call management center,
and remotely unlock the door.
Procedure
Step 1 Log in to the app, and then tap Monitor.
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