Extech Instruments 407790A, User Manual

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407790A-EN_V2.4 1/20
1.1 Instrument Care

Do not attempt to remove the mesh cover from the microphone as this will cause damage
and affect the accuracy of the instrument.

Protect the instrument from impact. Do not drop it or subject it to rough handling.
Transport it in the supplied carrying case.

Protect the instrument from water, dust, extreme temperatures, high humidity and direct
sunlight during storage and use.

Protect the instrument from air with high salt or sulfur content, gases and stored chemicals,
as this may damage the delicate microphone and sensitive electronics.

Always switch the instrument off after use. Remove the batteries from the instrument if it
is not to be used for a long period of time. Do not leave exhausted batteries in the
instrument, as they may leak and cause damage.

Clean the instrument only by wiping it with a soft, dry cloth or, when necessary, with a cloth
lightly moistened with water. Do not use solvents, abrasives, alcohol or cleaning agents