Roche Accu-Chek Performa Manuel De L'utilisateur page 52

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5. I f "On" is selected,
"set-up" and
The display shows
3.9 mmol/L (first use) or
the current level.
6. Press and release
flash. or
level. Press and release
to set the level.
7. To exit, press and hold
to select the until the flashing test
strip symbol appears on
the display.