Philips PR3733 Mode D'emploi page 22

ENGLISH
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- This symbol means: Do not throw away with the normal household
waste.
- This symbol indicates that the adapter is double insulated (Class II),
according to IEC 60601-1.
- This symbol means: alternating current.
- This symbol means: direct current.
- This symbol means: Conforms to EC Directives. CE stands for
'Conformité Européenne'.