La Crosse Technology WS 9711 IT+ Installation guide

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What is the maximum distance between the outdoor transmitter and the weather clock ?
The maximum open-air distance is 100 metres in a straight line although you should take into account the environment,
distance and interferences. Subtract 6 to 10 metres for an exterior wall or any other similar obstruction, in width or
composition. Subtract 3 to 10 metres for an interior wall or any obstruction that is similar in width or composition. (An
obstruction would include anything that is between the line of sight like a roof, walls, floors, ceilings, trees, etc.) Also
keep your units away from electronic appliances like TV’s, microwaves, computers, refrigerators and speakers.
Does the outdoor transmitter have any trouble transmitting through specific materials ?
Yes and No… We have trouble maintaining a signal through metal siding, stucco walls and UV glass. You can get the
outdoor sensor to transmit through these materials, but it will take a little bit of trial and error. Reset the weather
clock as mentioned hereunder and change the angle that the ourdoor transmitter transmits through the siding or glass
until an outdoor temperature remains on the display for an extended period of time. Keep in mind that the signal from
the ourdoor transmitter must travel through some space (10 cm of air minimum) before reaching a wall or glass window.
Where can I mount the remote sensor?
In order to get an accurate reading and to prolong the life of your sensor we recommend that you have it in a sheltered
area out of the sun and direct rain. Fog and Mist will not affect the sensor, but a soaking in water may.
You can mount it outside under an eve of your house or any other suitable place that will keep it out of the sun and rain.
Do not wrap the sensor in plastic or seal it in a plastic bag.

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How can I get outdoor temperature to show on the display for the first time or after loss of
information (i.e. power blackout)
Bring both units (station + transmitter) inside your house and have the units 1 to 2 meters apart with nothing in-
between them.
1. Remove the batteries from both units, display and remote sensor.
2. Wait until the display is blank to clear all memory (we recommend one minute).
3. Put the batteries back into the transmitter.
4. Taking care NOT to press any keys, reinstall the batteries into the base station.
Be careful, batteries must be inserted as mentionned hereabove (transmitter first, then in the base station) to
ensure a good functioning.
5. Do not press any keys for at least 10 minutes after installing the batteries. (Let them establish a good
connection. Pressing a button during this stage would be enough to stop the search for the sensor which is being
now carried out by the station).
An outdoor temperature should be showing on your display. You can now put your outdoor sensor back outside.
How can I read and reset the MIN/MAX recordings ?
Press the MIN/MAX key :
-one time to consult the maximum outdoor temperature recording
-two times to consult the minimum outdoor temperature recording
-three times to consult the maximum indoor temperature and humidity recordings
-four times to consult the minimum indoor temperture and humidity recordings
To reset the MIN/MAX recordings, you first have to display on the weather clock an indoor or outdoor min/max
recording (thanks to the MIN/MAX key). Then, press and hold the SET button for 4 seconds. The indoor temperature
and humidity and the outdoor temperature MIN/MAX recordings will be simultaneously reset.
The MINI and MAXI values that appear then on the screen are the current ones.
What can I do if my display is blank ?
Check the polarity on your batteries to make sure they are installed according to the diagram in the battery
compartment. Also make sure that you are using a quality alkaline battery. We advised against reloading batteries.

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Why is my time incorrect or not displaying at all?
1. This weather clock receives a DCF-77 signal from Frankfurt to set the clock to atomic time. Sometimes, due to poor
atmospheric conditions or local interferences you will not be able to receive a signal immediately. The best way to get a
signal is to put your clock on a window facing Frankfurt until you see the tower icon appear. If definitely you are not
receiving the signal, wait one night : during the night time there are less atmospheric disturbances.
2. If your time is off by an increment of exactly 1 hour, 2 hours, or more, change your TIME ZONE on zero not to have
time zone on the atomic time (which is CET meaning Central European Time (Brussels, Paris, Rome, Berlin, Madrid... ).
Change time zone on “-1” for Great Britain and Portugal. Match any time zone when receiving DCF-77 signal.
3. For this weather clock, the time zone goes from -12 hours up to +12 hours.
How do I manually set time and the other features of this weather clock ?
1. Press and hold the SET button for 3 seconds.
2. ‘lcd’ and a number from 0 to 8 will be flashing. To increase or decrease the contrast of the LCD display press and
release the CH/+ button. Press then and release the SET button.
3. The time zone will now be flashing. To change time zone, press and release the CH/+ button. When correct time
zone (from -12h up to +12h) is selected, press and release the SET button once.
4. You may just NOW activate or deactivate the DCF-77 reception function (radio controlled time). To toggle between
ON and OFF, press the CH/+ button. When your choice is displayed, press and release the SET button once.
5. 12h or 24h will now appear. To toggle between 12h and 24h, press and release the CH/+ button. Press then and
release the SET button once.
6. The hour will now be flashing : press and release the CH/+ button until correct hour is displayed. When correct hour
is displayed, press and release the SET button once.
7. The minutes will now be flashing. Press and release the CH/+ button until the correct value is displayed. Press and
release the SET button once.
8. The year will now be flashing. Press and release the CH/+ button until you have set the correct year. Press and
release the SET button.
9. The month will now be flashing. Press and release the CH/+ button until you have the correct month. Press and
release the SET button.
10. The date will now be flashing. Press and release the CH/+ button until you have set the correct date. Press and
release the SET button.
11. You can now choose the city (among 28 registered cities – see below) for sunset, sunrise and sun duration. The
cities’s abbreviation are displayed according to the following list, that you select by pressing the CH/+ button :
Frankfurt =F München =M Zürich =ZRH
Flensburg =FL Magdeburg =MD Amsterdam =AMS
Hannover =H Mainz =MZ Berlin =B
Bremen =HB Nürnberg =N Brüssel =BRU
Helsinki =HEL Oslo =OSL Copenhagen =CPH

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Hamburg =HH Paris =PAR Düsseldorf = D
Rostock =HRO Stuttgart =S Dresden =DD
Insbruck =INS Saarbrücken =SB Erfurt = EF
London =LDN Stockholm =STO
Luxemburg =LUX Vienna (Wien) =VIE
Once the selected citie appears, press and release the SET key.
12. You will now be able to set the “Snooze” function : you can set the alarm repetition time interval to 5, 10, 15, 20, 25
or 30 minutes. Proceed to setting by using the CH/+ key to choose the time interval or deactivate this function by
selecting “OFF” When you have your choice shown on the display, press and release the SET key once.
13. Degrees Celsius will now be flashing. To toggle between Celsius and Fahrenheit, press and release the CH/+ button.
When you have your choice shown on the display, press and release the SET button once.
14. You can now select weather icon threshold (1, 2 or 3) using the CH/+ button. Press then and release the SET button
once.
What does it means when “OFL” instead of data is displayed ?
“OFL” is displayed when in- or outdoor temperature or humidity data are “out of range”.
NOTA:
- indoor temperature measurement range : from -9.9 °C to 59.9 °C
- outdoor temperature measurement range : from -29.9 °C to 69.9 °C
- indoor humidity measurement range : from 1 to 99 % (weather clock provided with new Swiss high definition
sensor).
In the case of outdoor temperature, “OFL” can also be displayed when any interference occurs.
Correct data transmission is usually restored during the next data collection. If that is not the case, you should
restart your weather clock (see above).
Weather forecast icon
Weather forecast icon indicates improvement or degradation trend rather than immediate sun or rain as the icon
shows. “Weathergirl ‘s” clothes and expression will change accordingly to the pressure and temperature variations
recorded by the temperature station.
Example: if current weather is cloudy and the icon of rain is displayed, this does not imply that the station is
deficient because it is not raining. It simply means that the atmospheric pressure fell and that weather will be
getting poor but not necessarily raining.
Once your weather clock installed, it is recommended to ignore the forecast for the next 24 to 48 hours, in order
to leave time to the clock and to operate in constant condition and altitude.

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Each noticeable and important change of atmospheric pressure will result in a change of icon. In the climates
subjected to abrupt weather changes (e.g. sunny to rainy weather) the weather clock will operate more precisely
than in a climate with small weather variations (e.g. almost always sunny). In addition, an estimated forecast
precision is about 75%.
The La Crosse Technology weather stations are the only ones being equipped with a pressure sensor which records
pressure variations every 3 hours and which calculates, on a 12 hours average, and displays weather tendency
averages. Consequently, the La Crosse Technology weather stations are more sensitive and more precise than all
other similar products.
Moon phases
Moon phases can be correctly shown ONLY when time and date are displayed on the weather clock, either automatically
thanks to DCF-77 signal (radio controlled time) or thanks to manual setting.
How can I consult the sun duration ?
Just press the SNOOZE/SUN key on the top of the weather clock to toggle between the sunrise time, sunset time and
sun duration.