Beurer HM 22 Mode D'emploi page 26

7. Initial use
7.1 Inserting the batteries
Note
Before you can use the thermo hygrometer, you first have to insert two AAA
batteries (included in delivery) into the battery compartment. Proceed as follows:
1. A round battery compartment lid is located on the rear of
the thermo hygrometer. Twist the battery compartment lid
anti-clockwise. Now remove the battery compartment lid.
2. Insert the two AAA batteries included in delivery into the
battery compartment. When inserting the batteries, pay
attention to the correct polarity (+/-), as shown in the battery
compartment. As soon as the batteries are correctly inserted,
all display elements appear on the display for 3 seconds. The
thermo hygrometer then automatically switches to standard
mode.
3. Before you replace the battery compartment lid, you
first have to set the date and time. To do so, follow the
instructions in the following section.
7.2 Setting the date/time/temperature unit
1. To switch between the 12 and 24-hour modes, press the [TIME] button. To
switch between Celsius (°C) and Fahrenheit (°F), press the [UP/CF] button.
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TIME UP/CF DOWN RESET