1. The rainfall unit is flashing.
2. Press the ▲UP ARROW key or ▼DOWN ARROW key to toggle between the
unit "inch" or "mm"
3. Press the SET key to confirm and to enter the RELATIVE AIR PRESSURE UNIT
SETTING
RELATIVE AIR PRESSURE UNIT SETTING
The relative air pressure can be set as inHg or hPa. The default unit is hPa.
The relative air pressure unit is flashing.
Press the ▲UP ARROW key or ▼DOWN ARROW key to toggle between the
unit "inHg" or "hPa"
Press the SET key to confirm and to enter the RELATIVE PRESSURE
REFERENCE VALUE SETTING.
RELATIVE PRESSURE REFERENCE VALUE SETTING
Note: The default reference pressure-value of the barometer is 1013 hPa when
batteries are first inserted. For an exact measurement, it is necessary to first adjust
the barometer to your local relative air pressure (related to elevation above sea
level). Ask for the current atmospheric pressure of your home area (Local weather
service, the world wide web, optician, calibrated instruments in public buildings, airport).
Note: This feature is useful for those who live at elevations above sea level, but
want their air pressure display to be based on sea level elevation.
The relative air pressure can be manually set to another value within the range of 920 to
1080 hPa (27.10 to 31.90 inHg) for a better reference.
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