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Replace the battery compartment lid and secure the screw.
Disposal of the flat battery should meet environmental standards.
Cleaning
If the instrument is dirty after daily usage, it is advised to clean it by using
a humid cloth and a mild household detergent. Prior to cleaning, ensure
that instrument is switched off and disconnected from external voltage
supply and any other instruments connected. Never use acid detergents
or dissolvent for cleaning.
EN 12