Battery Replacement
In case of weak batteries, the symbol "b" appears on the display of the timer. The batteries should be changed.
The included lithium-ion batteries are expected to have a life time of 6 years.
Alternatively, regular 1.5V AA batteries can be used. The expected life time of this kind of batteries is approximately 1 year.
To replace the batteries, open the lid, exchange the batteries and close the lid again (see page 6).
When changing the batteries, make sure that no liquids are entering the housing to avoid oxidation of electronical parts.
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