BT 1000 - Manual (Page 10)

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7. We advise against placing these products on antique,
veneered or wooden surfaces as damage may occur.
8. Do not use your Synergy Handset in damp, humid
conditions such as bathrooms. Do not expose the
equipment or batteries to fire or water.
9. Do not dispose of used batteries with general
household rubbish and do not burn them.
10. Do not use handsets in places where there are
explosive hazards.
11. Clean the handset and charger with a damp (not
wet) cloth or antistatic wipe. Never use a dry cloth as
this may cause a static shock. Never spray cleaning fluid
directly onto the telephone.