Maintaining The Product; Inserting / Changing Batteries; Cleaning The Instrument - TESTO 545 Instruction Manual

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After the update the measuring instrument is restarting.
The firmware can be checked in the instrument menu or via the app.
A restart of the testo Smart App is recommended after the instrument
update.

9 Maintaining the product

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9.1

Inserting / changing batteries

Serious risk of injury to the user and/or destruction of the instrument.
There is a risk of explosion if the batteries are replaced with ones that
are the wrong type.
- Only use non-rechargeable alkaline batteries.
The instrument is switched off.

1 Open the battery compartment (on the back of the instrument) via the
snap lock.
2 Insert or replace batteries (3 x AA
alkaline batteries).
Observe the polarity!
3 Close the battery compartment.
When not in use for a long period: Take out the batteries.
9.2

Cleaning the instrument

1
If the housing of the instrument is dirty, clean it with a damp cloth.
Do not use any aggressive cleaning agents or solvents! Mild household
cleaning agents and soap suds may be used.
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9 Maintaining the product
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