La Crosse WS9257IT User manual

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WIRELESS 868 MHz WEATHER STATION
Instruction Manual
INTRODUCTION
Congratulations on purchasing this weather station as an example of innovative design and quality piece of
engineering. Providing time, date, calendar, moon phase, sunrise/sunset time, indoor and outdoor temperature,
indoor and outdoor relative humidity, and air pressure history information, this unit will never keep you guessing
on current and future weather conditions. Operation of this product is simple and straightforward. By reading this
operating manual, the user will receive a better understanding of the weather station together with the optimum
benefit of all its features.
FEATURES
The weather station
• 24 hour time display (seconds displayed by pressing the SUN key)
• Weekday, date and month display (year only in setting mode)
• Daylight saving time (DST) function selectable
• Daily alarm function
• Weather forecast with weather tendency indicator
«
Instant Transmission+» is the up and coming state
-
of
-
the
-
art new wireless transmission
technology, exclusively designed and developed by L CROSSE TECHNOLOGY.
“IT +” offers you an immediate update of all your outdoor data measured from the
transmitters: follow your climatic variations in real-time!
LCD
Display
Battery cover
Foldout
stand
Hanging hole
Function
Keys

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• Temperature display in degree Celsius (°C)
• Indoor temperature display with MIN/MAX recordings
• Outdoor temperature display with MIN/MAX recordings, time and date
• All MIN/MAX temperature recordings can be reset
• Indoor and outdoor relative humidities display in RH%
• Display of relative or absolute air pressure in hPa
• Relative air pressure with adjustable reference value
• Relative air pressure history bar graph for the past 12 hours
• Display of sunrise time, sunset time and sun duration for 193 European cities
• Display of 8 moon phases icons with indicator throughout the year
• LCD contrast setting
• Low battery indicator
• Table standing or wall mounting
Thermo-hygro Transmitter
• Remote transmission of outdoor temperature and humidity to weather station by 868MHz
• Display the outdoor temperature and humidity alternately on LCD screen
• Wall mounting case
• Mounting at a sheltered place. Avoid direct rain and sunshine
HOW TO INSTALL AND REPLACE BATTERIES IN THE THERMO-HYGRO TRANSMITTER
The outdoor thermo-hygro transmitter uses 2 x AAA, IEC LR3, 1.5V batteries. When the batteries
need to be replaced, the low battery symbol will appear on the LCD screen. To install and replace
the batteries, please follow the steps below:
1. Remove the cover.
2. Insert batteries, observing the correct polarity (see marking).
3. Replace the battery cover on the unit.
HOW TO INSTALL AND REPLACE BATTERIES IN THE WEATHER STATION
The weather station uses 2 x C, IEC LR14, 1.5V batteries. To install and replace the batteries, please follow the
steps below:
1. Remove the cover at the back of the weather station.

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2. Insert batteries, observing the correct polarity (see marking).
3. Replace the compartment cover.
Note: Always wait for 2 minutes after removing the batteries
before reinserting, otherwise start up and transmission problems
may occur. In the event of changing batteries in any of the units, all
units need to be reset by following the setting up procedures.
BATTERY CHANGE
It is recommended to replace the batteries in all units regularly to ensure optimum accuracy of these units (see
“Specifications”).
Please participate in the preservation of the environment. Return used batteries to an
authorized depot.
SETTING UP
Note: This weather station receives only one outdoor transmitter.
1. First, insert the batteries in the transmitter (see “How to install and replace batteries in the thermo-
hygro transmitter”).
2. Within 30 seconds of powering up the transmitter, insert batteries in the weather station (see “How to
install and replace batteries in the weather station”). Once the batteries are in place, all segments of
the LCD screen will light up briefly and a short signal tone will sound. Then the indoor temperature,
humidity and the time as 0:00 will be displayed. If these information are not displayed on the LCD screen
after 60 seconds, remove the batteries and wait for at least 60 seconds before reinserting them. Once the
indoor data is displayed 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 should then be displayed on the weather station. If this does not
happen after 2 minutes, the batteries will need to be removed from both units and reset from step 1.
4. In order to ensure successful 868 MHz transmission, the distance between the weather station and the
transmitter should be within 100 meters (see notes on “Positioning” and “868 MHz Reception”).
FUNCTION KEYS
Weather station:
The weather station has five easy to use function keys:

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SET key
• Press and hold for 3 seconds to enter manual setting modes: LCD contrast, DST ON/OFF, manual time,
calendar and relative air pressure reference value
• To stop the alarm sound
• To exit alarm setting mode and country/city setting mode
• To toggle between relative and absolute air pressure display
+ key
• To increase/change values in setting modes
• To stop the alarm sound
MIN/MAX key
• To switch among the display of MIN/MAX indoor temperature and MIN/MAX outdoor temperature records
• To decrease/change values in setting modes
• At normal mode, press and hold the key for 3 seconds to reset ALL indoor/outdoor MIN/MAX temperature
recordings to current readings
• To stop the alarm sound
ALARM key
• To activate/desactivate the alarm and display alarm time
• Press and hold for 3 seconds to enter the alarm setting mode
• To stop the alarm sound
• To exit manual setting mode and country/city setting mode
SUN key
• To switch among the display of date (normal mode), seconds, sun duration and city
• Press and hold for 3 seconds to enter country/city setting mode
• To stop the alarm sound
• To exit manual setting mode and alarm setting mode
LCD SCREEN
The LCD screen is split into 3 sections displaying the information for time/calendar, indoor temperature/humidity,
moon phase, sunrise/sunset time, weather forecast, air pressure, and outdoor temperature/humidity.
SET key +key MIN/MAX key ALARM key
SUN key

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* When the signal is successfully received by the weather station, the outdoor reception icon will be switched on.
(If not successful, the icon will not be shown) So the user can easily see whether the last reception was
successful (icon on) or not (icon off). On the other hand, the flashing of the icon shows that a reception is being
done now.
MANUAL SETTINGS
The following settings can be changed when pressing the SET key:
• LCD contrast
• Daylight saving time (DST) ON/OFF
• Manual time
• Calendar
• Relative air pressure reference value
Press and hold the SET key for about 3 seconds to advance to the setting mode :
Calendar
Weather
forecast icon
Air pressure
history bar
graph
Outdoor data signal
reception indicator *
Weather
Tendency indicator
Outdoor
Temperature
in °C
Sunset Time
Weekday
Indoor
Temperature
in °C
Time
Alarm
icon
Low battery indicator
(Weather Sta
tion)
Moon
phase
indicator
Sunrise Time
Outdoor humidity
display in RH%
MIN/MAX outdoor
temperature records
Indoor humidity
display in RH%
Air pressure in hPa
(relative or absolute)
Low battery
indicator (Outdoor
transmitter)

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Weekday
Year (flashing)
Day. Month.
LCD CONTRAST SETTING
The LCD contrast can be set within 8 levels, from LCD 0 to LCD 7 (Default is LCD 3):
1. The digit starts flashing
2. Press the +key or MIN/MAX key to set the level of contrast desired.
3. Press the SET key to confirm and enter the “Daylight Saving Time On/Off setting,” or exit the setting
mode by pressing the ALARM key or SUN key.
DAYLIGHT SAVING TIME SETTING
The daylight saving time (DST) function can be set ON/OFF. Default setting is “ON”:
1. “ON” will flash on the LCD screen with "dSt" displayed.
2. Use the +key to turn the daylight saving time function ON or OFF.
3. Confirm with the SET key and enter the “Manual Time setting” or exit the setting mode by pressing the
ALARM key or SUN key.
MANUAL TIME SETTING
To set the clock:
1. The hour digit will start flashing.
2. Use the +key to increase or MIN/MAX key to decrease the value. Keep holding the key allows the value to
advance faster.
3. Confirm with the SET key and enter minute setting.
4. The minute will be flashing. Use the +key to increase or MIN/MAX key to decrease the value.
5. Confirm with the SET key and enter the “Calendar Setting” or exit the setting mode by pressing the ALARM
key or SUN key.
CALENDAR SETTING
Minutes
Hour (flashing)
Digit flashing
Flashing

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1. The year digits will start flashing.
2. Use the +key to increase or MIN/MAX key to decrease the value. The range runs from 2011 to 2025.
3. Press the SET key to confirm and enter the month setting mode.
4. The month digit will be flashing. Use the +key to increase or MIN/MAX key to decrease the value.
5. Press the SET key to enter date setting, or exit the setting mode by pressing the ALARM key or SUN key.
6. The date digit will be flashing. Use the +key to increase or MIN/MAX key to decrease the value. Keep
holding the key allows the value to advance faster.
7. Confirm with the SET key and enter the “Relative Air Pressure Reference Value Setting”, or exit the
setting mode by pressing the ALARM key or SUN key.
Note:
Weekday is displayed above the time in short form (from Monday to Sunday): MO / TU / WE / TH / FR / SA / SU
RELATIVE AIR PRESSURE REFERENCE VALUE SETTING
The default relative pressure value is 1013 hPa (29.92 inHg). This can be manually set to another value within
the range of 960 – 1040 hPa (28.35 – 30.72 inHg) for a better reference.
1. The current relative pressure value will start flashing
2. Use the +or MIN/MAX key to increase or decrease the value. Keep holding the key allows the value to
advance faster.
8. Confirm with the SET key and go back to normal mode, or exit the setting mode by pressing the ALARM key or
SUN key.
LOCATION SETTNG FOR SUNRISE/SUNSET TIME
The weather station will automatically update the sunrise, sunset and sun duration time at 00:00, based on the
city location, the date, time and DST settings.
1. Press and hold the SUN key for 3 seconds to enter the Location setting mode.
2. The short form of Country name will start flashing. Use the +key or MIN/MAX key to select the Country.
Note: 193 European cities can be chosen from. Every country/city is displayed in short code (default country/city
is France/Paris = F75). See the list at the beginning of this handbook for all the country/ city codes. French cities
are coded from F01 to F95. The department name is in brackets ( ).
3. With the desired country selected, press the SUN key to enter City setting mode.
Country Code (flashing)
flashing

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4. The City code will start flashing. Use the +key or MIN/MAX key to select the City. Keep holding the key
allows the value to advance faster.
5. Confirm with the SUN key, or exit the setting mode by pressing the SET key or ALARM key without
saving the changes.
6. The city’s sunrise, sun duration and sunset time will be displayed in a few seconds.
7. Press the SUN key twice to go back to normal date display.
DISPLAY OF SUN DURATION TIME
1. In normal date mode, press the SUN key twice to display the sun duration time (total number of hours of
sunlight on the day).
2. Press the SUN key again will display the City selected (see “LOCATION SETTING FOR
SUNRISE/SUNSET TIME”).
3. Press the SUN key again to go back to normal date display.
ALARM SETTING
To set the daily alarm:
1. Press and hold ALARM key for 3 seconds until the alarm time shown.
2. The hour digit will be flashing. Press the +key or MIN/MAX key to adjust the hour.
3. Press ALARM key once and minute digit will be flashing. Press the +key or MIN/MAX key to adjust the minute.
4. Press ALARM key once to confirm the setting, or exit the setting mode by pressing the SET or SUN key.
Note: To activate/deactivate the alarm function, press the ALARM key once. The display of the alarm icon (((•)))
represents that the alarm is "ON".
Note: The duration of alarm sounding is 2 minutes. Press any key will stop the alarm sound.
Sunrise
time
Sun duration
(hours : minutes)
Sunset
icon
Sunrise
icon
Sunset
time
City Code
(flashing)
Alarm time
(flashing)
Alarm On indicator

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TO EXIT SETTING MODE
To exit the setting mode anytime without saving the changes, user can wait for automatic timeout to return to
normal display.
WEATHER FORECASTING ICONS
Weather icons can be displayed in any of the following combinations:
For every sudden or significant change in the air pressure, the weather icons will update accordingly to represent
the change in weather. If the icons do not change, then it means either the air pressure has not changed or the
change has been too slow for the Weather station to register. However, if the icon displayed is a sun or raining
cloud, there will be no change of icon if the weather gets any better (with sunny icon) or worse (with rainy icon)
since the icons are already at their extremes.
The icons displayed forecasts the weather in terms of getting better or worse and not necessarily sunny or rainy
as each icon indicates. For example, if the current weather is cloudy and the rainy icon is displayed, it does not
mean that the product is faulty because it is not raining. It simply means that the air pressure has dropped and
the weather is expected to get worse but not necessarily rainy.
Note:
After setting up, readings for weather forecasts should be disregarded for the next 12-24 hours. This will allow
sufficient time for the weather station to collect air pressure data at a constant altitude and therefore result in a
more accurate forecast.
Common to weather forecasting, absolute accuracy cannot be guaranteed. The weather forecasting feature is
estimated to have an accuracy level of about 75% due to the varying areas the weather station has been
designed for use. In areas that experience sudden changes in weather (for example from sunny to rain), the
weather station will be more accurate compared to use in areas where the weather is stagnant most of the time
(for example mostly sunny).
If the weather station is moved to another location significantly higher or lower than its initial standing point (for
example from the ground floor to the upper floors of a house), discard the weather forecast for the next 12-24
hours. By doing this, the weather station will not mistake the new location as being a possible change in air-
pressure when really it is due to the slight change of altitude.
WEATHER TENDENCY INDICATOR
Working together with the weather icons is the weather tendency indicator (located on the left of the weather
icons). When the arrow points upwards, it means that the air pressure is increasing and the weather is expected
to improve, but when arrow points downwards, the air pressure is dropping and the weather is expected to
become worse.
Taking this into account, one can see how the weather has changed and is expected to change. For example, if
the indicator is pointing downwards together with cloud and sun icons, then the last noticeable change in the
weather was when it was sunny (the sun icon only). Therefore, the next change in the weather will be cloud with
rain icons since the indicator is pointing downwards.
Sun Sun with cloud
Cloud with
rain

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Note: Once the weather tendency indicator has registered a change in air pressure, it will remain permanently
visualized on the LCD.
AIR PRESSURE HISTORY (ELECTRONIC BAROMETER WITH BAROMETRIC PRESSURE TREND)
The right side of the second section of the LCD shows the air pressure history bar graph.
The bar graph indicates the air pressure history trend over the last 12 hours in 5 intervals: 0h, -3h, -6h, -9h and -
12h. The “0h” represents the current full hour air pressure recording. The columns represent the “hPa” (0, ±1, ±3,
±5) at specific time. The “0” in the middle of this scale is equal to the current pressure and each change (±1, ±3,
±5) represents how high or low in “hPa“ the past pressure was compared to the current pressure.
If the bars are rising it means that the weather is getting better due to the increase of air pressure. If the bars go
down, it means the air pressure has dropped and the weather is expected to get worse from the present time
“0h“.
Note:
For accurate barometric pressure trends, the weather station should operate at the same altitude for recordings
(i.e. it should not be moved from the ground to the second floor of the house). When the unit is moved to a new
location, discard readings for the next 12 hours.
ABSOLUTE/RELATIVE AIR PRESSURE
Press the SET key to toggle between relative and absolute air pressure displays.
Note:
Absolute air pressure provides the display of the true measured air pressure of the current time and location. This
is not programmable and the absolute air pressure range of the weather station is from 300 hPa to 1099 hPa
(standard air pressure at an altitude of 9,100 meters is around 300 hPa).
Relative air pressure is the one value that is calculated back to sea level from the local absolute air pressure and
can thus be taken as a reference for weather condition and weather development for the entire country. It can be
programmed to represent your local surroundings. Since the relative air pressure is also the one value given by
various newspapers, TV and radio broadcasting stations in their daily weather forecasts for their respective
locations, users can set the relative air pressure of the weather station to this value to represent readings in your
area (see “Relative Air Pressure Reference Value Setting”).
Air pressure trend over
the last 12 hours
Absolute air pressure display