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![](https://files.manualsfile.com/91658739-vth8641kms-wp/bg63.png)
Figure 4-9 Live video
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: Switch to another VTO.
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: Unlock the door remotely.
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: Have a two-way audio talk with the VTO.
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: Call management center.
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For VTH5441G.
PDF File Manual, 127 pages, Read Online | Download pdf file