6
13. Outdoor temperature and humidity low alarm
and high alarm
14. Temperature display unit
15. General outdoor alarm icon
display
28. Rainfall alarm on indicator
29. Radio controlled time version WWVB
30. Radio controlled time icon
4.2 Weather forecasting
Sunny Partly Cloudy Cloudy Rainy
The four weather icons Sunny, partly Cloudy, Cloudy and Rainy represent the weather forecasting. For every
sudden or significant change in air pressure, the weather icons will update accordingly to represent the
change in weather.
4.3 Weather forecast tendency indicator
The weather tendency indicators arrow is located between the weather icons to show the air pressure
tendency and provide a forecast of the weather to be expected by the decreasing or increasing air pressure.
The rightward arrow means that the air pressure is increasing and the weather is expected to become better.
The leftward arrow means that the air pressure is decreasing and the weather is expected to become worse.
The change of weather forecast icon is in accord to the relationship between current relative pressure and
the pressure change since last three hours. If the weather is changing, weather tendency indicator (animated
arrows) will be flashing. And then the arrows will fix while weather conditions have become stably.
Examples of changing weather icons:
4.4 Storm warning indicator
The storm threshold can be set to suit the user’s requirement for storm forecasting from level 3-9 (default
level 3). When there is a fall over pressure threshold in 3 hours, the storm forecasting will be activated, the
clouds with rain icon and tendency arrows will flash for 3 hours indicating the storm warning feature has been
activated.
Notes to pressure sensitivity setting for weather forecasting:
The pressure threshold can be set to suit the user’s requirement for weather forecasting from level 2-4
(default level 3). The lower level pressure threshold setting, the higher sensitivity for weather forecasting. For
areas that experience frequent changes in air pressure requires a higher setting compared to an area where
the air pressure is stagnant.
5. Program
Mode
The base station has five keys for easy operation:
SET
key,
+
key,
ALARM
key,
HISTORY
key and
MIN/MAX
key. And there are five program modes available: Quick Display Mode, Setting Mode, Alarm Mode
，
History
Mode and Min/Max Mode.
The program mode can be exited at any time by either pressing the
HISTORY
key, or waiting for the
30-second time-out to take effect.
