ECOWITT WH2910, Operation Manual

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[SET]
Rain Units
of Measure Press [WIND +] to
change rain units of
measure between in and
mm.
[SET] Hemisphere Press [WIND +] to change
hemisphere between NTH
(northern) and STH
(southern). This
setting effects the moon
phase display.
[SET] Exit Set Mode
[SET] + 2 seconds means press and hold the SET button for two seconds.
[SET] means press the SET button.
Table 5: Set mode sequence and commands summarization
6.4 Barometric Pressure Display
6.4.1 Viewing Absolute vs. Relative Pressure
To switch between absolute and relative pressure, press and hold the
[PRESSURE -] button for two seconds.
Absolute pressure is the measured atmospheric pressure, and is a function of
altitude, and to a lesser extent, changes in weather conditions.
Absolute pressure is not corrected to sea-level conditions.
Relative pressure is corrected to sea-level conditions.
For further discussion of relative pressure and calibration, reference Section
6.4.4.
6.4.2 Rate of Change of Pressure Graph
The rate of change of pressure graphic is shown to the left of the barometric
pressure and signifies the difference between the daily average pressure and
the 30 day average (in hPa).