Dahua Technology VTH2421FW-P User Manual

Figure 3-11 Call from VTO
Table 3-2 Call screen description
Key
Description
/
Remotely unlock the door where the VTO is installed.
The system provides 2-channel unlock. If the icon is gray, it
means that the unlock function of this channel is not
available.
The microphone can be used. Tap the icon, and the
microphone cannot be used.
Tap to switch the IPC that is linked.
Select an IPC in Favorite to monitor.
Take snapshot.
●
This key will be gray if SD card is not inserted.
●
The SD card is available on select models.
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Dahua Technology VTH2421FW-P Specifications

General

Brand	Dahua Technology
Model	VTH2421FW-P
Category	Intercom System
Language	English