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WEATHER FORECAST AND TENDENCY 

 

THE WEATHER FORECASTING ICONS: 

There are 3 weather icons on the third section of the LCD, which can be displayed in any of the following 
combinations: 

 

 
 
 

 

                Sunny                    

 

Cloudy with sunny intervals                    

 

Rainy 

 

For every sudden or significant change in the air pressure, the weather icons will update accordingly to 
represent the change in weather. If the icons do not change, then it means either the air pressure has not 
changed or the change has been too slow for the Projection Clock to register. However, if the icons displayed is 
a sun or raining clouds, there will be no change of icon if the weather gets any better (with sunny icon) or worse 
(with rainy icon) since the icons are already at their extremes. 

 

The icons displayed forecasts the weather in to terms of getting better or worse and not necessarily sunny or 
rainy as each icon indicates. For example, if the current weather is cloudy and the rainy icon is displayed, it 
does not mean that the product is faulty because it is not raining. It simply means that the air pressure has 
dropped and the weather is expected to get worse but not necessarily rain. 

 

Note:

 

 

After setting up, readings for weather forecasts should be disregarded for the next 12-24 hours. This will allow 
sufficient time for the Projection Clock to collect air pressure data at a constant altitude and therefore result in a 
more accurate forecast. 

 

Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather forecasting feature is 
estimated to have an accuracy level of about 75% due to the varying areas the Projection Clock has been 
designed for use in. In areas that experience sudden changes in weather (for example from sunny to rain), the 
Projection Clock will be more accurate compared to use in areas where the weather is stagnant most of the time 
(for example mostly sunny). 

 

If the Projection Clock is moved to another location significantly higher or lower than its initial standing point (for 
example from the ground floor to the first floor of a house), remove the batteries and re-insert them after about 
30 seconds. By doing this, the Projection Clock will not mistake the new location as being a possible change in 
air-pressure when really it is due to the slight change of altitude. Again, disregard weather forecasts for the next 
12 to 24 hours as this will allow time for operation at a constant altitude. 

 

THE WEATHER TENDENCY INDICATOR: 

Working together with the weather icons are the weather tendency indicators (located on the left and right hand 
side of the weather icons). When the indicator points upwards, it means that the air-pressure is increasing and 
the weather is expected to improve, but when indicator points downwards, the air-pressure is dropping and the 
weather is expected to become worse. 

 

Taking this into account, one can see how the weather has changed and is expected to change. For example, if 
the indicator is pointing downwards together with cloud and sun icons, then the last noticeable change in the 
weather was when it was sunny (the sun icon only). Therefore, the next change in the weather will be cloud with 
rain icons since the indicator is pointing downwards. 

 

Note:

 

 

Once the weather tendency indicator has registered a change in air pressure, it will remain permanently 
visualized on the LCD. 

 

Содержание WT-553

Страница 1: ...month Alarm setting with snooze function Time zone 9 hours Temperature display in degree Celsius Indoor temperature display Outdoor temperature display Weather forecasting with 3 weather icons Weather...

Страница 2: ...batteries in the Projection Clock above All the segments of the LCD will light up briefly and a beep will sound Then the time as 0 00 the indoor temperature and the outdoor temperature as C will be di...

Страница 3: ...10 minutes the DCF time has not been received manually enter the time The clock will automatically attempt each hour to receive the DCF time When this is successful the received time will override the...

Страница 4: ...th display mode Enter manual time setting mode and time zone setting mode Stop alarm and snooze function Set the minute weekday month and year Back light On Set the brightness level of the projection...

Страница 5: ...distance of the Projection Clock should be at least 1 5 2 0 meters away from interfering sources such as computer monitors or TV sets 2 Avoid placing the Projection Clock onto or in the immediate prox...

Страница 6: ...was pressed in To use the snooze feature simply press the SNOOZE key when the alarm is sounding and the alarm will snooze for 5 minutes before automatically sounding again When the alarm is snoozing t...

Страница 7: ...ated However if the signals are not received you can adjust the date manually To do this 1 The year digits start flashing Use the MODE MIN key to set the year the range runs from 2000 to 2029 2 Press...

Страница 8: ...to the varying areas the Projection Clock has been designed for use in In areas that experience sudden changes in weather for example from sunny to rain the Projection Clock will be more accurate com...

Страница 9: ...erfering sources such as computer monitors or TV sets 2 Avoid placing the temperature transmitter onto or in the immediate proximity of metal window frames 3 Using other electrical products such as he...

Страница 10: ...temperature transmission every 1 minute Transmission frequency 433 92 MHz Transmission distance maximum 25 meters in open field Power source Projection Clock 3 x AA IEC LR6 1 5V batteries Alkaline bat...

Страница 11: ...R TTE Directive 1999 5 EC Summary of the Declaration of Conformity We hereby declare that this wireless transmission device does comply with the essential requirements of R TTE Directive 1999 5 EC...

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