TFA 30.3029 Manual Del Usuario página 118

HOW TO INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE
STATION
The Temperature Station uses 2 x AAA, IEC LR3, 1.5V batteries. When batteries
will need to be replaced, the low battery icon will appear on the LCD. To install and
replace the batteries, please follow the steps below:
1. Lift up the battery compartment cover.
2. Insert batteries observing the correct polarity (see
marking).
3. Replace compartment cover.
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