Maintaining The Product - testo 540 Manual De Instrucciones

Maintaining the product

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Maintaining the product
Changing b b atteries:
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.
Cleaning t t he h h ousing:
Clean the housing with a moist cloth (soap suds) if it is dirty.
Do not use aggressive cleaning agents or solvents!