Other than giving the readings of your current altitude and temperature in the Altimeter mode, you can set your own altitude value. This is a way where you can use it to set it to zero for referencing the height of a climb or as a re-calibration of the altitude reading.
- Go into the Altimeter mode.
- Hold the "Adjust" button until the current altitude value start to flash.
- Use the "Light" (decrease) and "Alti" (increase) buttons to adjust the reference value.
- Press the "Adjust" button to apply the altitude reference value.
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