Telecom R303 User Manual page 49

clean the handset.

The handset will be damaged by liquid ingress. The handset
contains a liquid detection sticker which changes colour when
exposed to liquids. Liquid ingress is not covered by warranty
under any circumstances.

Do not expose the handset to solvents, chemicals or abrasive
cleaning products.

Do not expose the handset or battery to prolonged direct
sunlight or temperatures exceeding 50˚ C. This may damage
the battery and high temperatures can shorten the life of
electronic devices.

Please use original accessories only. Damage caused by
non-genuine accessories may not be covered by your warranty
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