Wetekom 50 50 65, Инструкция по эксплуатации

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7
Using
2. If the ring tones are distorted or become lower, change the
batteries.
3. Keep the max. range between transmitter and receiver of
40 m. The range can be reduced by the structure of buildings
or large metallic objects. Check the max. possible range at the
desired location.
4. Use only one pairs of units within the range of 40 m. The use
of more units in the same range will disturb the radio signal.
Cleaning
ƒ Clean the housing with a soft cloth only.
ƒ Do not use chemicals or abrasives for cleaning.
Batteries do not belong in household
garbage.
For battery disposal, please check with
your local council.