Siemens hicom 150 H optiset E standard Operating Instructions Manual page 4

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Do not operate the telephone in environments where there is a danger
of explosions.
Use only original Siemens accessories (Æ page 88). Using other acces-
sories may cause a hazard and will invalidate the warranty and the CE
mark.
Never open the telephone or a key module. If you encounter any prob-
lems, contact System Support.
Never allow the telephone to come into contact with staining or aggres-
sive liquids such as coffee, tea, juice, or soft drinks.
For information on telephone maintenance Æ page 90.
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The telephone conforms to EU directive 1999/5/EG, as attested by the
CE mark.
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