Fora P20 Owner's Manual page 15

Step 4
Set the unit of measurement.
Press to select mmHg or Kpa. Press
Step 5
Setting the speaking volume.
There are seven (7) speaking volume options you can choose from.
Press to select the desired speaking volume. Press
Volume 0 indicates that the speaking function is turned off, and will
not display "
high, and " " will be displayed during testing.
" . Volume 1 to 7 indicates speaking volume from low to
S
to set.
S
to set.
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