Dahua DH-VTO9221D User Manual

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Figure 4-7
Icon Icon Name Note
Unlock 1
VTO config electric control lock, click
, unlock.
Unlock 2
If this VTO has 485 expansion interface, it
can expand electric control lock or door
sensor lock, after successfully matching
with VTH, click , unlock.
MIC
Click , turn off MIC volume.
IP Camera
Click ，
select IPC video of
monitoring favorites.
Snapshot
Click ，to snapshot.
Note:
When SD card is not installed, this button is
grey.
Record
Click ， record ；
call ends, click
end recording.
Records are stored to SD card of this VTH,

Dahua DH-VTO9221D Specifications

General

Brand	Dahua
Model	DH-VTO9221D
Category	Intercom System
Language	English