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Automatic:
As soon as you install the batteries into the indoor unit, the clock starts searching for the DCF radio signal
to set the correct time and date while the antenna symbol ashes. After several seconds or minutes the
WS-4900 will start showing the correct time. In extreme cases, it can take over a day before the DCF time
is shown.
while searching for the radio signal, you cannot continuously switch on the display lighting. However
by pressing the ALARM/SNOOZE button, the display lighting will switch on but switches o again
after 5 seconds. As soon as the clock has found the radio signal, or when stopping the search by briey
pressing the RCC button, the display lighting switches on continuously.
Manually:
If the clock cannot receive the radio signal or cannot receive it well enough, you can set the clock manually
as follows:
1. Press and hold the button for 2 seconds, 12Hr or 24Hr will appear in the display
2. Use / to set the time format, then briey press the button
3. Use / to set the hours and then briey press the button
4. Use / to set the minutes and then briey press the button
5. Use / to set the seconds to 0 (this allows you to have the clock run synchronously with your own
clock) and then briey press the button
6. Use / to set the year and then briey press the button
7. Use / to set the month and then briey press the button
8. Use / to set the date and then briey press the button
9. Use / to set the dierence in hours as compared to the DCF time. For use in the Benelux, select ‘0’
and briey press the button
10. Use / to set the language for displaying the days, you may choose from: EN (English), FR (French),
DE (German), ES (Spanish) or IT (Italian), briey press the button
11. Use / to determine whether the clock must automatically switch to daylight saving time (AUTO) or this
must be done manually (OFF), briey press the button
The clock is now set manually.
When the DCF receiver is enabled and a strong signal is being received, the receiver will overwrite the
clock display.
To switch the DCF receiver on/o:
You may switch o the DCF receiver as follows to only display the time and date you’ve programmed
yourself:
• to switch o: press and hold the RCC button at the rear of the weather station for 8 seconds until OFF
illuminates and the antenna symbol disappears
You may switch the receiver back on as follows:
• to switch on: press and hold the RCC button at the rear of the weather station for 8 seconds until ON
illuminates, the antenna symbol starts ashing and the display turns green.
The symbol in the upper part and in the middle of the display shows the status of the DCF clock:
No symbol: the DCF receiver is switched o; the displayed time is determined by the internal
clock of the weather station
ashing: the DCF receiver is switched on and is searching for the DCF signal; the displayed
time is determined by the internal clock of the weather station
remains lit: the DCF receiver is switched on and is receiving the DCF signal; the displayed time
and date are determined by the atomic DCF clock in Frankfurt
3.5 To reset the rain data:
After everything is installed, press and hold the HISTORY button for 10 seconds to delete all measurement
data up to that moment. This prevents you from seeing measurement data at a later time that was caused
by movements during the installation.