OPeRating instRuCtiOns
item no. 1170970 / Version 05/14
RadiO-COntROlled WeatHeR statiOn eFWs 400
intended use
The product is used to display the indoor and outdoor temperature and the time of day. An alarm
function is also integrated.
The measured data of the outdoor sensor are transmitted to the base station via wireless radio
connection.
The product is battery-operated.
Any use other than described above may damage the product, there may also be other dangers.
Read these operating instructions completely and carefully as they contain very important infor-
mation about installation, operation and handling. Always observe the safety instructions and all
other information included in these operating instructions.
PaCKage COntents
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Base station
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Outdoor sensor
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Operating Instructions
eXPlanatiOn OF sYmbOls
m
This symbol indicates specific risks associated with handling, function and use.
The “Hand” symbol indicates special tips and operating information.
saFetY instRuCtiOns
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the warranty/guarantee will be void in the event of damage caused by failure to ob-
serve these operating instructions! We do not assume any 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/
guarantee will be null and void.
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The unauthorised conversion and/or modification of the product is not permitted for safety
and approval reasons (CE). Never open/dismantle it (except as described in these operating for
inserting/replacing the batteries).
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Do not use this product in hospitals or medical institutions. Although the outdoor sensor emits
only relatively weak radio signals, these may lead to the malfunction of life-supporting sys-
tems. The same may also apply to other areas.
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The manufacturer does not accept any responsibility for incorrect displays, measurements or
weather forecasts or the consequences which might arise from this.
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The product is intended for private use and not suited for medical purposes or informing the
public.
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The product is not a toy and should be kept out of the reach of children. The product contains
small parts, glass (display) and batteries. Position the product so it is out of the reach of chil-
dren.
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The base station is only suitable for dry, enclosed indoor areas. Do not expose the base station
to direct sunlight, strong heat, cold, humidity or moisture; otherwise it may be damaged.
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The outdoor sensor is suitable for use in outdoor areas. It must not be used in or under water,
this will destroy it.
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Do not leave the packaging materials unattended. They may become dangerous playthings for
children.
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If the product is brought from a cold into a warm room (e.g. during transport), condensation
may develop. This could damage the product. Wait until the product has reached room tem-
perature before using it. This may take several hours.
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Handle the product with care; it can be damaged by impacts, blows, or accidental drops, even
from a low height.
nOtes On batteRies and ReCHaRgeable batteRies
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Batteries/rechargeable batteries do not belong in the hands of children.
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Check that the polarity is correct when inserting the batteries/rechargeable batteries (pay attention
to plus/+ and minus/-).
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Do not leave batteries/rechargeable batteries lying around; there is a risk of them being swallowed
by children or pets. If they are swallowed, consult a doctor immediately.
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Leaking or damaged batteries/rechargeable batteries in contact with the skin can cause acid
burns; therefore, use suitable safety gloves.
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Liquids leaking from batteries/rechargeable batteries are very chemically aggressive. Objects
or surfaces coming into contact with these liquids might be considerably damaged. Thus, store
batteries/rechargeable batteries in a suitable location.
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Ensure that batteries/rechargeable batteries are not short-circuited, dismantled or thrown
into a fire. There is a risk of explosion!
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Do not recharge normal, non-rechargeable batteries. There is a risk of explosion! Charge only
rechargeable batteries that are intended for this purpose; use a suitable battery charger.
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If not used for a long period (e.g. in case of storage), remove the inserted batteries/recharge-
able batteries. Old batteries/rechargeable batteries can leak and cause damages on the prod-
uct; loss of guarantee/warranty!
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Always exchange the entire set of batteries/rechargeable batteries, only use batteries/re-
chargeable batteries of the same type and by the same manufacturer with the same charge
status (do not mix full with semi-full or empty batteries/rechargeable batteries).
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Never mix batteries with rechargeable batteries. Use either batteries or rechargeable batter-
ies.
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For the environmentally responsible disposal of batteries and rechargeable batteries, please
read the chapter “Disposal“.
COntROls
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
19
20
21
22
18
1 Display area for time/alarm time
2 Number of the outdoor sensor (channel)
3 Display area for outdoor temperature
4 Display area for indoor temperature
5 Bell icon (appears when the alarm function is activated)
6 Reception symbol for DCF signal
7 Reception symbol for radio signal of the outdoor sensor
8 “ALARM SET” button
9 “CH +” button
10 Sliding switch to select between the °C and °F temperature units
11 “SENSOR” button
12 “SNOOZE/LIGHT” button
13 “DISPLAY SET” button
14 “MEM -” button
15 “RESET” button
16 “RCC” button
17 Battery compartment
18 LED for transmission process (lights up during radio transmission of the measured values)
19 “RESET” button
20 Openings for wall mounting
21 Sliding switch for the setting of the transmission channel
22 Battery compartment
COmmissiOning
Operating the base station and the outdoor sensor with rechargeable batteries is pos-
sible. However, the operating time and the display contrast are reduced by the lower
voltage (battery = 1.5 V, rechargeable battery = 1.2 V). Rechargeable batteries are very
sensitive to cold, therefore, the service life of the outdoor sensor decreases further dur-
ing the winter.
We recommend therefore to operate both, the base station and the outdoor sensor with
high-quality alkaline batteries to ensure long and reliable operation.
a) inserting batteries into the outdoor sensor
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Open the battery compartment on the back of the outdoor sensor by sliding its cover off down-
wards.
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Set the transmission channel (1, 2 or 3) using the sliding switch (21). If you are using only the
single outdoor sensor enclosed, select channel 1.
If you have more than one outdoor sensor (up to 3 can be registered on the base station), each
outdoor sensor must be set to a different channel.
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Insert two batteries of type AA/Mignon with correct polarity into the battery compartment
(22) (observe po and negative/-).
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Briefly press the button “RESET“ (19).
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Close the battery compartment again.
With each transmission step of the outdoor sensor, the red LED (18) on the front side of
the outdoor sensor flashes briefly.