Klarstein VIRTUOSA FLEX 90 Mode D'emploi page 60

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Locking the Controls
You can lock the controls to prevent unintended use (for example children accidentally
turning the cooking zones on).
To lock the controls
Touch the lock control
To unlock the controls
Touch and hold the lock control
Note: When the hob is in the lock mode, all the controls are disable except the ON/
OFF, you can always turn the induction hob off with the ON/OFF control
emergency, but you shall unlock the hob first in the next operation.
The timer indicator will show "Lo".
for a while.
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