TFA Dostmann 35.1111 Instruction Manual

WEATHER STATION

Instruction Manual

Thank you for choosing this wireless weather station from
TFA.

BEFORE YOU USE IT

Please be sure to read the instruction manual
carefully.

This information will help you to familiarise yourself with
your new device, learn all of its functions and parts, find
out important details about its first use and how to operate
it, and get advice in the event of faults.
Following the instruction manual for use will prevent
damage to the device and loss of your statutory rights
arising from defects due to incorrect use.

We shall not be liable for any damage occurring as a
result of not following these instructions.
Please take particular note of the safety advice!
Please look after this manual for future reference.

SCOPE OF SUPPLY:

•

Weather station (basic unit)

•

Outdoor transmitter

•

Instruction manual

FIELD OF OPERATION AND ALL OF THE
BENEFITS OF YOUR NEW WEATHER STATION AT
A GLANCE

•

DCF Radio controlled time with manual setting
option

•

Time reception ON/OFF (user selectable)

•

Time zone option ±12 hours

•

Calendar display (year only in setting mode)

•

Display 8 moon phases

•

Weather forecasting with weather tendency i ndicator

•

Indoor and outdoor temperature display with
MIN/MAX records

•

Temperature display in ºC

•

Indoor and outdoor humidity display

•

Humidity data display as RH%

•

Low battery indicator

•

Table standing or wall mounting

Cat. No. 35.1111.IT

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FOR YOUR SAFETY:

•

The product is exclusively intended for the fi eld of
application described above. The product should
only be used as described within these instructions.

•

Unauthorised repairs, modifications or changes to
the product are prohibited.

•

The product is not to be used for medical purpose or
for public information, but is intended solely for
home use.

Caution!
Risk of injury:

•

•

•

! Important information on product safety!

•

•

Keep this instrument and the batteries out of reach
of children.
Batteries must not be thrown into the fire, short­circuited, taken apart or recharged. Risk of
explosion!
Batteries contain harmful acids. Low batteri es
should be changed as soon as possible to preve nt
damage caused by a leaking battery. Never use a
combination of old and new batteries together or
batteries of different types. Wear chemical-resistant
protective gloves and glasses when handling leaked
batteries.

Do not expose the instrument to extreme
temperatures, vibration or shock.
The outdoor transmitter is protected against splash
water, but is not watertight. Choose a shady a nd dry
position for the transmitter.

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LCD

ELEMENTS

The Weather Station

Display

Function keys

Thermo-Hygro Transmitter

•

•

•

•

Hanging hole

Battery
compartment

Stand

Remote transmission of outdoor
temperature and humidity to weather
station by 868MHz
Alternately display the outdoor
temperature and humidity readings
on LCD
Wall mounting case
Mounting at a sheltered place. Avoid
direct rain and sunshine

TO INSTALL AND REPLACE BATTERIES IN THE
THERMO-HYGRO TRANSMITTER

The outdoor thermo-hygro transmitter uses 2 x AAA, IEC
LR3, 1.5V batteries. To install and replace the batteries,
please follow the steps below:

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1. Remove the battery cover by pushing
the battery cover upwards with your
thumb.

2. Insert the batteries, observing the
correct polarity (see battery
compartment marking).

3.

Replace the battery cover on the unit.

TO INSTALL AND REPLACE BATTERIES IN THE
WEATHER STATION

The weather station uses 2 x AA, IEC LR6, 1.5V batteries.
To install and replace the batteries, please foll ow the steps
below:

Battery replacement

•

Replace the batteries when the battery symbol of
the weather station appears on the upper display.

•

When the batteries of the transmitter are used up,
the low battery icon appears next to the outdoor
temperature display.

Note:

In the event of changing batteries in any of the units, all
units need to be reset by following the setti ng up
procedures. This is due to a random securi ty code
assigned by the transmitter at start-up. This code must be
received and stored by the weather station i n the first 3
minutes of power being supplied to the transmitter.

1. Insert finger or other
solid object in the
space at the bottom
center of the battery
compartment and lift up
to remove the cover.

2. Insert batteries
observing the correct
polarity (see marking).

3. Replace compartment
cover.

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SETTING UP

1. First, insert the batteries in the transmitter (see “To

install and replace batteries in the thermo-hygro
transmitter” above).

2. Within 2 minutes of powering up the transmi tter,
insert the batteries in the weather station (see “To

install and replace batteries in the weather
station” above). Once the batteries are in pl ace, all

segments of the LCD will light up briefly. Following
the indoor temperature/humidity and the time as
00:00 will be displayed. If these information are not
displayed on the LCD after 60 seconds, remove the
batteries and wait for at least 60 seconds before
reinserting them. Once the indoor data is di splayed
user may proceed to the next step.

3. After the batteries are inserted, the weather station
will start receiving data signal from the transmitter.
The outdoor temperature and humidity data sho uld
then be displayed on the weather station. If this
does not happen after 2 minutes, the batteri es will
need to be removed from both units and reset from
step 1.

4. In order to ensure sufficient 868 MHz transmission
however, the distance between the weather stati on
and the transmitter should not be more than 100
meters (see notes on “Positioning” and “868 MHz

Reception”).

Note:

In the event of changing batteries of the units,
ensure the batteries do not spring free from the
contacts. Always wait at least 1 minute after
removing the batteries before reinserting, otherwise
start up and transmission problems may occur.

5. Once the outdoor data reception test period i s
completed, the DCF tower icon in the clock display
will start flashing in the upper left corner. This
indicates that the clock has detected that there is a
radio signal present and is trying to receive i t. When
the time code is received, the DCF tower becomes
permanently lit and the time will be displayed.

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DCF RADIO CONTROLLED TIME

The time base for the radio controlled time i s a Cesium
Atomic Clock operated by the Physikalisch Technische
Bundesanstalt Braunschweig which has a ti me deviation of
less than one second in one million years. The time is
coded and transmitted from Mainflingen near Frankfurt via
frequency signal DCF-77 (77.5 kHz) and has a
transmitting range of approximately 1,500 km. Your radio­controlled weather station receives this signal and
converts it to show the precise time in summer or
wintertime.
The quality of the reception depends greatly on the
geographic location. In normal cases, there sho uld be no
reception problems within a 1,500 km radius of Frankfurt.

DCF reception is done twice daily at 02:00 and 03:00 am.
If the reception is not successful at 03:00 am, then the
next reception takes place the next hour and so o n until
06:00am, or until the reception is successful. If the
reception is not successful at 06:00 am, then the next
attempt will take place the next day at 02:00 am.

If the tower icon flashes, but does not set the time or the
DCF tower does not appear at all, then please take note of
the following:

•

Recommended distance to any interfering sources
like computer monitors or TV sets is a minimum of

1.5 - 2 meters.

•

Within ferro-concrete rooms (basements,
superstructures), the received signal is naturally
weakened. In extreme cases, please place the unit
close to a window and/ or point its front or back
towards the Frankfurt transmitter.

•

During nighttime, the atmospheric disturbances are
usually less severe and reception is possibl e in most
cases. A single daily reception is adequate to keep
the accuracy deviation below 1 second.

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