4. Replace the battery compartment cover.
Suggestions for changing the battery:
The batteries must be changed when nothing
is shown on the display.
Only use the battery type specified in "Tech-
nical data".
Dispose of old batteries in an environmentally
friendly manner, see "Disposal".
Cleaning
Do not submerge the device in water
or other fluids. Do not use rough,
scratching or abrasive cleaning agents.
− Dust the device with a soft, dry cloth or
wipe with a slightly damp cloth when
necessary.
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