TESTO 540 - Maintaining the product; Changing batteries; Cleaning the housing

Maintaining the product16
Maintaining the product
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Changing bbatteries:
1 To open the battery compartment, push the battery cover
down.
2 Remove used batteries and insert new batteries
(2x 1.5 V type AAA). Observe the polarity!
3 To close the battery compartment, push the battery cover
back on.
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Cleaning tthe hhousing:
i Clean the housing with a moist cloth (soap suds) if it is dirty.
Do not use aggressive cleaning agents or solvents!