Häfele DT 100 Mode D'emploi page 29

The clock continues to run for up to 5 minutes without batteries. In spite of this, the
time should be checked and set if necessary using the "MDU 110" after a battery
change.
The locking authorisations for the user keys are also retained after a battery change
and do not have to be reset.
For step-by-step instructions "Battery change" see illustrations
starting on page 81.
AA
NOTE
> Do not throw batteries in the residential waste!
> Dispose of batteries in an environmentally friendly way, e.g. using
a municipal collection point.
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