Alecto WS-4900 User Manual

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4.5 Barometer (air pressure):
 Ifthisscreenisn’tvisible,rstbrieypressthe button
1. ‘barometer’ indication
2. Actual air pressure
3. This shows the air pressure trend over the last 24 hours
4. Air pressure per hour over the last 24 hours
5. Indicates whether the relative or absolute air pressure is shown (see
also * add 5)
6. Indicates whether the air pressure is shown in hPa (hectoPascal), in inHg (inch mercury pressure) or
mmHg (millimeter mercury pressure) (see also * add 6)
* add 5: An absolute air pressure indicates the air pressure that is present regardless of the altitude at which
you measure the air pressure. A relative air pressure is the air pressure that is compensated for the altitude
at which you measure the air pressure. For a correct weather forecast you need the relative air pressure.
You may set the desired unit as follows:
1. Press and hold the button for 2 seconds
2. Use / to select the desired unit: REL for relative, ABS for absolute
3. Briey press the button (if the air pressure now starts ashing, press the button again)
Refer to the chapter 7 for adjusting the relative air pressure display in case you’re using the weather station
somewhere a lot higher than sea level.
add 6: In the Benelux one uses the hectopascal notation. Before, the air pressure was sometimes also
expressed in bars. 1 mbar equals 1 hPa. Briey press the button to switch between these notations.
4.6 Rain:
Ifthisscreenisn’tvisible,rstbrieypressthe button
1. ‘rain’ indication
2. Illuminates when the max. rain alert is set
3. Indicates over which period the displayed rainfall amount is mea-
sured (see also * add 3) .
4. Rainfall per day over the last 5 days
5. Rainfall trend over the last 5 days
6. Today’s rainfall amount
7. Indication of whether the amount of rainfall is displayed in “in” (inch) or in “mm” (millimetre). (see also
* add 7)
* add 3: No indication = : the rainfall during the past hour (this is updated every 6 minutes and shows the
amount of rainfall during the past 60 minutes).
DAILY = : rainfall of today, calculated from midnight.
WEEKLY = : rainfall from the beginning of the week (Monday)
MONTHLY = : rainfall in this month
Briey press the button to switch between these indications.
* add 7: You may set the desired unit as follows:
1. press and hold the button for 2 seconds
2. use / to select the desired unit
3. briey press the buttons
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6
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7
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Alecto WS-4900 Specifications

General

Brand	Alecto
Model	WS-4900
Category	Weather Station
Language	English