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4. Press and release or to
switch between “On” and
“OFF.” Press and release
to
set the option.
5. If “On” is selected, “set‑up”
and
ash. The display
shows 3.9 mmol/L (rst use)
or the current level.
6. Press and release
or to
select the level. Press and
release
to set the level.
7. To exit, press and hold
until
the ashing test strip symbol
appears on the display.