Dahua Technology VTH2421F Series - Card Information

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Figure 3-27 Other settings
Step 3 Tap and to set the time or volume. Tap to enable
Ring Mute
, and the icon
becomes .
●
VTO ring time: ring time when a VTO calls this VTH.
●
VTH ring time: ring time when another VTH calls this VTH.
3.6.2 Card Information
Background Information
Issue and manage card information.
This function is only available under
Villa
.