Enraf Nonius EN-Motion - Speaker Volume

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EN109-1665751-44
10.7.2.g Speaker volume
The default setting is:
Speaker volume = 100%
Select the Speaker volume setting using the
central controller and press OK to change
the volume of the built-in loudspeaker.
Change the Speaker volume using the
central controller and press OK.
The volume of the built-in loudspeaker will be
reset and you will automatically return to the
Default settings menu.