This product complies with the applicable National and European speci
fi
cations.
Intended Use
The Jumbo radio controlled wall clock with weather trend is intended to be used to decode the DCF radio
signal from the caesium atomic clock in Braunschweig (Germany), to display the time, date and weather data
as well as to provide an alarm function.
The device may be used only indoors. Contact with moisture, for example in bathrooms, must be avoided.
The wall clock is designed for battery operation only. Do not use any other power supply. The correct battery
type is speci
fi
ed in the “Technical data” section.
Any use other than described above is not permitted and can damage the product. In addition, it can lead to
dangers such as short-circuit,
fi
re and electrical shock.
The safety instructions have to be followed without fail.
Safety Instructions
The warranty will be void in the event of damage caused by failure to observe these safety
instructions! We do not assume liability for any resulting damage.
We do not assume any liability for material and personal damage caused by improper use
or non-compliance with the safety instructions. In such cases, the warranty will be null
and void.
An exclamation mark inside a triangle indicates important instructions in the operating
manual.
☞
The „hand“ symbol indicates special information and advice on operating the device.
• For safety reasons, any unauthorised conversions and/or modi
fi
cations to the product are not permitted.
• Do not expose the product to high temperatures, strong vibrations or heavy mechanical loads.
• If you have any doubts about the correct operation, or the safety of the product, please consult a specialist.
• Do not allow children to play with the device. Only use the product out of the reach of children; the product
contains parts that can be swallowed as well as batteries.
• Do not leave packaging materials unattended. They may become dangerous playthings for children.
• Handle the product with care, it can be damaged by impacts, blows, or accidental drops, even from a low
height.
• The manufacturer does not accept any liability for incorrect or inaccurate readings or any consequences
resulting from such readings.
• Please observe the additional safety instructions in the individual chapters of this manual.
Controls and Parts
(1) Clock
face
(2) Weather trend display
(3) Day of the week display
(4) Date
display
(5) Moon phase display
(6) Temperature
display
(7) Barometer
display
(8) Suspension
eye
Introduction to DCF
The jumbo radio wall clock features a DCF controlled clock mechanism, which automatically synchronises
the time display with the DCF signal. Thus, it is not necessary to set the clock by hand.
The time is adjusted by synchronising with the DCF signal from the caesium atomic clock at the “Physikalisch
Technischen Bundesanstalt” in Braunschweig (Germany). This makes it very accurate. In the event of a loss
of the signal, the clock continues to work accurately as a quartz clock.
What is DCF?
The DCF-signal is an encoded radio signal, which carries the time information from the caesium atomic clock
at PTB Braunschweig.
The atomic clock is so accurate that a theoretic deviation of ± 1 second is only to be expected after 1 million
years.
The DCF signal is encoded and transmitted via a DCF
transmitter in Main
fl
ingen near Frankfurt. The transmitter
has a range of approximately 1,500-2,000 km.
Clocks that are equipped with a DCF receiver can re-
ceive and decode the DCF-signal within this transmission
range.
Setting the time manually is not necessary with DCF
clocks (e.g. changing the time from summer to winter
time).
Similar to the reception of radio signals, the DCF signal
reception is very dependent on location and position, as
well as interference e.g. from computers, TV sets or mi-
crowave ovens.
Ferro-concrete walls, which dampen the DCF signal, can be a further cause for poor reception.
Inserting/Replacing the Batteries
Batteries should be kept out of the reach of children.
Ensure that the polarity is correct, when inserting the batteries.
Remove the batteries, if you are not going to use the device for a while, to prevent dam-
age from leaking. Leaking or damaged batteries/rechargeable batteries can cause acid
burns upon contact with skin. Thus, you should wear protective gloves when handling
damaged batteries/rechargeable batteries.
Keep the batteries out of the reach of children. Do not leave batteries lying around. There
is the risk that the batteries may be swallowed by children or pets. If swallowed, consult
a doctor immediately.
The batteries must not be short-circuited or thrown into a
fi
re. There is danger of an
explosion.
Do not recharge normal, non-rechargeable batteries, risk of explosion! Only charge re-
chargeable batteries that are intended for this purpose; use suitable rechargeable battery
chargers.
The batteries should have the same level of charge and be of the same type. Mixing old
and new batteries or mixing different batteries in the device can lead to battery leakage
and thus to damage to the device.
• Open the cover of the battery compartment (15) on the back of the device.
• Insert three new 1.5V mignon batteries (AA) in the battery compartment (15) paying attention to the polar-
ity. The correct polarity is indicated in the battery compartment.
• Close the battery compartment (15) again.
• The clock now starts searching for the DCF signal and tries to tune in.
• If the display contrast fades, the battery is low and has to be replaced as described above.
• To ensure a long battery life, only use alkaline types.
☞
Rechargeable batteries may be used but due to the lower voltage output (rechargeable battery
= 1.2V, standard battery = 1.5V) and the lower capacity, the service life is shorter.
Installation/Setup
The jumbo radio wall clock can be placed on furniture or attached to the wall.
• To stand the clock, fold out both support feet (16) on the back of the device.
• There is a suspension eye (8) on the back of the device for wall mounting.
• Secure the clock in place with a screw that protrudes a few millimetres from the wall. Then hang the clock
on the screw head with the suspension eye (8).
DCF Time Adjustment
• After inserting the batteries the clock searches automatically for the DCF signal. This is indicated by the
blinking DCF symbol (1).
• Normally, the synchronisation process is completed within a few minutes.
• As soon as the DCF signal is decoded, the DCF tower icon will appear continuously and the current time
and date are shown in the display.
• If the DCF symbol goes out after a while, the synchronisation process was not successful. In this case,
change the location of the clock and start a manual reception attempt.
• To start a manual reception attempt, press and hold the button -/DCF Reception (12) for about 3 seconds,
until the DCF symbol in the time display (1) blinks.
☞
If there is interference with the reception of the DCF signal, try to
fi
nd a new location and/or leave
the clock near a window overnight.
At night the reception is better, so the clock is normally synchronised the next morning.
O P E R A T I N G I N S T R U C T I O N S www.conrad.com
Jumbo radio controlled wall
clock with weather trend
Item no. 67 26 25
Version 04/12
(9) CLOCK/ZONE
button
(10) ALARM button
(11) +/WEEK button
(12) -/DCF reception button
(13) C/F / LCD CONTRAST button
(14) SNOOZE button
(15) Battery compartment
(16) Feet
