VTO config electric control lock, press
, unlock.
If this VTO has 485 expansion interface, it can
expand electric control lock or door sensor
lock, after successfully matching with VTH,
press , unlock.
Press , turn off MIC volume.
Press ，select IPC video of monitoring
favorites.
Press ，to snapshot.
Note:
When SD card is not installed, this button is
grey.
Press ，record；call ends, press
end recording.
Records are stored to SD card of this VTH, if
full, it overwrites from the earliest record.
Note:
When SD card is not installed, this button is
grey.
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