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6
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3. Auto call back
1. Adjust ringtone volume
After 1 and 2 setups, DF4 can apply a calling from DF4, simulator a call from
door station.
When power up and standby (DF4 is screen off), press and hold for 3s
until led flashes.
2 levels adjustable. When standby, into main menu, tap refers to
switch the volume between large and small.
Press and hold
Release
User personalization setup
VER 01.01
ADDR 01.01
