The device gives an automatic warning when
batteries are discharged. In such case, immediately
after switch-on or during the use a graphic symbol
and a message „Change batteries" will display. After
that, the GMM mini will switch off automatically.
GMM mini
Change batteries
The moisture meter is powered with two AA type bat-
teries 1.5V (LR6).
In order to change batteries:
– Unlock the battery compartment cover on the
underside and remove discharged batteries by
pulling up the ribbon,
– Place the ribbon inside the battery compartment,
– Install new batteries according with their polarity
signs +/– (pressing the ribbon inside),
– Close the battery compartment with the cover.
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SECTION 11 | BATTERY REPLACEMENT
Press it carefully until it locks with a click, which
indicates that the battery compartment is properly
secured and there is no risk of batteries falling out.