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The reason the current conditions do not match the forecast icon is because the
forecast is a prediction 24-48 hours in advance. In most locations, this
prediction is only 70% accurate and it is a good idea to consult the National
Weather Service for more accurate weather forecasts. In some locations, this
prediction may be less or more accurate. However, it is still an interesting
educational tool for learning why the weather changes.
The National Weather Service (and other weather services such as Accuweather
and The Weather Channel) have many tools at their disposal to predict weather
conditions, including weather radar, weather models, and detailed mapping of
ground conditions.
7.
Specification:
Outdoor data
Transmission distance in open field
: 100M
Frequency
: 868MHz depending on location
Temperature range
: -40˚C--60˚C (-40˚F to +140˚F)
Accuracy
: + / - 1 °C
Resolution
: 0.1˚C
Measuring range rel. humidity
: 1%
～
99%
Accuracy
: +/- 5%
Rain volume display
: 0 – 9999mm
(show --- if outside range)
Accuracy
: + / - 10%
Resolution
: 0.1mm (if rain volume < 1000mm)
1mm (if rain volume > 1000mm)
Wind speed
: 0-50m/s (0~100mph)
(show --- if outside range)
Accuracy
: +/- 1m/s (wind speed< 5m/s)
+/-10% (wind speed > 5m/s)
Measuring interval thermo-hygro sensor
: 16 s
Indoor data
Indoor temperature range
: 0˚C--50˚C (32˚F to + 122˚F)
(show --- if outside range)
Resolution
: 0.1˚C
Summary of Contents for WH3900
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