La Crosse Technology WS-9257U-IT User manual

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LCD
display
Function
keys
WIRELESS 915 MHz WEATHER STATION
WS-9257U-IT
Instruction Manual
INTRODUCTION
Congratulations on purchasing this weather station with wireless 915 MHz transmission of outdoor
temperature/humidity, and display of indoor temperature/humidity and air pressure. It also
functions as a normal clock with calendar display and alarm setting. In addition, weather forecast,
sunrise/ sunset time as well as the moon phase are shown. This innovative product is ideal for use
in the home or office.
FEATURES
The weather station
Hanging
hole
Battery
compartment
Foldout
stand

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12 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
Temperature display in degree Fahrenheit (°F)
Indoor temperature display with MIN/MAX recordings
Outdoor temperature display with MIN/MAX recordings, time and date
All MIN/MAX recordings can be reset
Indoor and outdoor humidity display in RH%
Display of relative or absolute air pressure
Relative air pressure inHg with adjustable reference value
Relative air pressure history for the past 12 hours
Display of sunrise time, sunset time and sun duration time in 93 USA cities and 6 Canadian
cities
Display 8 moon phase icons with indicator throughout the year
LCD contrast setting
Low battery indicators
Table standing/wall mounting

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The outdoor thermo-hygro transmitter
Remote transmission of outdoor temperature and humidity to weather station
by 915 MHz
Alternately display the outdoor temperature and humidity on LCD
Wall mounting case
Mounting at a sheltered place. Avoid direct rain and sunshine
INITIAL SET UP
DO NOT MIX OLD AND NEW BATTERIES.
DO NOT MIX ALKALINE, STANDARD, OR RECHARGEABLE BATTERIES
1. Insert the batteries into the Temperature transmitter. Keep the transmitter 5-10 feet
from the Weather Station during set up.
2. Within 45 seconds, insert batteries into the Weather Station. Once the batteries are
in place all segments will light up briefly. The time will be displayed as 12:00. If this
is not displayed within 80 seconds, remove the batteries from both units for 2
minutes and start again from step 1.
3. The weather station will start receiving data from the transmitter. The outdoor
temperature and signal reception icon will be displayed. If this is not displayed

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within 80 seconds, remove the batteries from both units for 2 minutes and start
again from step 1.
4. Allow the weather station and the transmitter to remain 5-10 feet apart for 15
minutes after set up to establish a strong connection.
5. To ensure sufficient 915 MHz transmission after set up, the distance between the
transmitter mounted outside and the weather station inside should not exceed 330
feet (100 meters) distance (open air, no obstructions).
6. Test the weather station and the transmitter in the positions they will be located for one
hour before permanently mounting. If the outdoor temperature signal goes to dashes restart
from step 1 and try a new location.
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. 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.

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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.
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 (Battery life See Specifications below).
Please participate in the preservation of the environment. Return used
batteries to an authorized depot.
FUNCTION KEYS
Weather station:
The weather station has five easy to use function keys:

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SET key
Press and hold for 2 seconds to enter manual setting modes: LCD contrast, DST ON/OFF,
manual time setting, calendar and relative air pressure value
To stop the alarm sound
To exit alarm setting mode and country/state/city setting mode
To toggle between relative and absolute air pressure value 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 outdoor temperatures and MIN/MAX indoor
temperatures
To decrease/change values in setting modes
SET key
+key
MIN/MAX key
ALARM key
SUN key

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Press and hold the key for 2 seconds to reset ALL indoor/outdoor minimum/maximum
temperature recordings to current readings
To stop the alarm sound
ALARM key
To activate/deactivate the alarm and display alarm time
Press and hold for 2 seconds to enter the alarm setting mode
To stop the alarm sound
To exit manual setting mode and country/state/city setting mode
SUN key
To switch among the display of date (normal mode), seconds, sun duration and city
Press and hold for 2 seconds to enter country/state/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 main sections displaying the information for indoor and outdoor
data, time, moon phase, calendar, sunrise/sunset time, weather forecast and air pressure.

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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 in LCD) So the user can easily see
Alarm icon
Moon phase
indicator
Weather
forecast icon
Weekday
Weather
tendency
indicator
Time
Low battery
indicator
(transmitter)
Sunrise
time
Sunset
time
Outdoor data
signal reception
indicator *
Outdoor
temperature
in °F
Air pressure
history bar
graph
Indoor
temperature
in °F
Indoor
humidity
display in RH%
Outdoor
humidity
display in
RH%
Relative and
absolute air
pressure
display
Low battery
indicator
(weather
station)
Outdoor MIN/MAX
temperature display

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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 setting
Daylight Saving Time (DST) ON/OFF
Manual time setting
Calendar setting
Relative air pressure value setting
Press and hold the SET key for about 2 seconds to advance to the setting mode:
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 +or MIN/MAX key to select the level of contrast desired.
Digit flashing

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3. Press the SET key to confirm and enter the “Daylight Saving Time 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 with "dSt" displayed.
2. Use the +or MIN/MAX 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
Hour (flashing)
Flashing
Minutes (flashing)

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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. Keep holding the key allows the value to advance faster.
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
1. The year digits will start flashing. Use the +key to increase or MIN/MAX key to decrease
the value. The range runs from 2011 to 2025 (default is 2011). Keep holding the key allows
the value to advance faster.
2. Press the SET key to confirm and enter the month setting mode.
Month. Date
Year

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3. The month digit will be flashing. Use the +key to increase or MIN/MAX key to decrease the
value. Press the SET key to enter date setting. Keep holding the key allows the value to
advance faster.
4. 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.
5. Confirm with the SET key and enter the “Relative Air Pressure Value Setting”, or exit the
setting mode by pressing the ALARM key or SUN key.
Note:
Weekday is displayed accordingly above the time in short form (from Monday to Sunday): MO /
TU / WE / TH / FR / SA / SU.
RELATIVE AIR PRESSURE VALUE SETTING
The default relative air pressure value is 29.91 inHg. This can be manually set to another value
within the range of 28.30 –30.80 inHg for a better reference.
1. The current relative air pressure value will start flashing.
2. Use the +key to increment and MIN/MAX key to decrement the value. Keep holding the
key allows the value to advance faster.
3. Confirm with the SET key and go back to normal mode.
Flashing

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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 2 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:
See the Country / State / City codes list at the end of this handbook: 2 countries / 99 cities
can be chosen from.
Every country/city is displayed in short code (default country is USA). The states
abbreviations are in brackets ( ) for USA.
Country code (flashing)

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To select a US state and city:
1. Once “USA” has been selected, press the SUN
key to enter the state setting.
2. The state code (2 letters abbr. ) will start flashing.
Press the + or MIN/MAX key to select the state.
3. After the state has been selected, press the SUN
key to enter the city setting.
4. The 3 letters city abbr. will start flashing. Use the
+key or MIN/MAX key to select the city.
5. Confirm with the SUN key. The city’s sunrise, sun
duration and sunset time will be displayed in a
few seconds.
State code (flashing)
City code (flashing)
Country code (flashing)

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6. Press the SUN key twice to go back to normal date display.
7. User can exit the setting mode by pressing the SET key or ALARM key without saving the
changes.
Sunset time of
selected city
Sunrise time of
selected city
Sun duration
(hours : minutes)
Sunset icon
Sunrise icon

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To select a Canadian city:
1. Once “CAN” has been selected, press the SUN
key to enter the city setting.
2. The city code (3 letters abbr.) will start flashing.
Press the + or MIN/MAX key to select the city.
3. Confirm with the SUN key. The city’s sunrise, sun
duration and sunset time will be displayed in a few
seconds.
Country code (flashing)
City code (flashing)

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4. Press the SUN key twice to go back to normal date display.
5. User can exit the setting mode by pressing the SET key or ALARM key without saving the
changes.
ALARM SETTING
To set the daily alarm:
1. Press and hold ALARM key for 2 seconds until the alarm time shown.
Alarm time (flashing)
Alarm indicator (ON)
Sunset time of
selected city
Sunrise time of selected city
Sun duration
(hours : minutes)
Sunset icon
Sunrise icon

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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 +key or MIN/MAX key to
set the minute.
4. Press ALARM key once to confirm the setting, or exit the setting mode by pressing the SET
key 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.
TO EXIT SETTING MODE
To exit the setting mode, wait for automatic timeout to return to normal time 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 selected city. (See “LOCATION SETTNG FOR
SUNRISE/SUNSET TIME”)
3. Press the SUN key again to go back to normal date display.
THE MOON PHASE
The weather station displays 8 different moon phase icons. The current moon phase is indicated
with a bar segment according to the set calendar.

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New
Moon
Waning
Crescent
First
Quarter
Waxing
Gibbous
Waxing
Crescent
Last
Quarter
Full
Moon
Waning
Gibbous
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.
Sun
Sun with cloud
Cloud with rain
A bar segment
indicates the current
moon phase

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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.