TESTO 320 basic - Maintaining the product; Cleaning the measuring instrument; Replacing the rechargeable battery

7 Maintaining the product
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7 Maintaining the product
7.1. Cleaning the measuring instrument
> If the housing of the measuring 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.
7.2. Replacing the rechargeable battery
✓ The measuring instrument must not be connected to a mains
socket via the mains unit. The instrument must be switched off.
Change the rechargeable battery within 2 minutes so that
instrument settings (e.g. date/time) are not lost.
1. Place the measuring instrument on its front.
2. Unscrew, lift up and remove the service cover.
3. Press down on the holder lightly with your fingers.Pull the
retaining clip in the direction of the arrow until the catch is
released. Remove holder.