Technoline DCF-77-Uhr Livret D'instructions page 74

Do not subject the unit to excessive force or shock.
Do not expose the unit to extreme temperatures, direct sunlight, dust or humidity.
Do not immerse in water.
Avoid contact with any corrosive materials.
Do not dispose this unit in a fire as it may explode.
Do not open the inner back case or tamper with any components of this unit.
Batteries safety warnings
Use only alkaline batteries, not rechargeable batteries.
Install batteries correctly by matching the polarities (+/-).
Always replace a complete set of batteries.
Never mix used and new batteries.
Remove exhausted batteries immediately.
Remove batteries when not in use.
Do not recharge and do not dispose of batteries in fire as the batteries may explode.
Ensure batteries are stored away from metal objects as contact may cause a short circuit.
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