La Crosse Technology Wireless Weather Station User manual

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WEATHER STATION
Instruction Manual
INVENTORY OF CONTENTS
1. Wireless Temperature Station
2. Wireless Temperature Sensor (TX40U-IT) and mounting bracket.
3. Instruction Manual
INSTANT TRANSMISSION is the state-of-the-art new wireless
transmission technology, exclusively designed and developed by
LA CROSSE TECHNOLOGY. INSTANT TRANSMISSION offers you
an immediate update (every 4 seconds!) of all your outdoor data
measured from the transmitters: follow your climatic variations in
real-time!
This product offers:

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LCD
display
FEATURES:
The Weather Station
12/24 hour display
Calendar (year, month and day display in setting mode only)
Temperature display in degrees Celsius (ºC) or Farenheit (ºF)
Indoor and outdor temperature with MIN/MAX records
Function
keys
Hanging hole
Battery
compartment
cover
Detachable stand

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Manual reset of MIN/MAX records
3 weather forecast icons with weather tendency indicator
Wireless transmission at 915 MHz
Signal reception interval at 4 seconds
Low battery indicators
Wall mounting or table standing (detachable stand)
The Outdoor Temperature Transmitter
Remote transmission of outdoor temperature to weather station by 915 MHz
signals
Shower proof casing
Wall mounting and table-standing

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SET UP:
Note: This weather station receives only one outdoor transmitter.
Do not mix old and new batteries. Do not mix alkaline, standard, or rechargeable batteries.
1. First, insert the batteries into the temperature transmitter. (see “Install and replace batteries in the
temperature transmitter“).
2. Within 30 seconds, insert the batteries into weather station (see “Install and replace batteries in the
weather station”). Once the batteries are in place, all segments of the LCD will light up briefly. Then the time
(default 12:00) and the weather icon will be displayed. If these are not displayed after 60 seconds, remove the
batteries and wait for at least 60 seconds before reinserting them.
3. After inserting the batteries, the weather station will start receiving data from the transmitter. The outdoor
temperature and the signal reception icon should then be displayed on the weather station. If this does not
happen after 3 minutes, the batteries will need to be removed from both units and reset from step 1.
4. In order to ensure successful 915 MHz transmission, this should under good conditions be a distance no
more than 200 feet/100 meters between the final position of the weather station and the transmitter (see
notes on “Mounting” and “915 MHz Reception”).

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HOW TO INSTALL AND REPLACE BATTERIES IN THE WEATHER STATION
The weather station uses 2 x AA, IEC LR6, 1.5V batteries. When batteries need
to be replaced, the low battery icon will appear on the LCD. To install and
replace the batteries, please follow the steps below:
1. Lift up the battery compartment cover.
2. Insert batteries observing the correct polarity (see marking).
3. Replace compartment cover.
HOW TO INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE TRANSMITTER

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The temperature transmitter uses 2 x AAA, IEC LR3, 1.5V batteries. To install and replace the batteries,
please follow the steps below:
1. Remove the battery compartment cover at the back of the transmitter.
2. Insert the batteries, observing the correct polarity (see marking).
3. Replace the battery compartment cover on the unit.
Note:
In the event of changing batteries in any of the units, all units need to be reset by
following the setting up procedures. This is because a security code is assigned by the
transmitter at start-up and this code must be received and stored by the Weather
station in the first 3 minutes of power being supplied to it.
BATTERY CHANGE:
It is recommended to replace the batteries in all units regularly to ensure optimum accuracy of these units
(Battery life see “Specifications”).
Please participate in the preservation of the environment. Return used batteries to an
authorized depot.

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FUNCTION KEYS:
Weather station:
The weather station has four easy to use function keys.
SET key
INDOOR/RESET key
+key
OUTDOOR key

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SET key
Press and hold to enter manual setting modes: 12/24 hour time, manual time, calendar, ºF/ºC temperature
unit setting
+ key
To change any values in manual set modes
INDOOR/RESET key
To display indoor MIN/MAX temperature records
Press and hold to reset all indoor and outdoor MIN/MAX temperature records
OUTDOOR key
To display outdoor MIN/MAX temperature records

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Outdoor reception Signal icon *
LCD SCREEN:
Indoor
temperature
in °F/ºC
Outdoor
temperature in
°F/ºC
Weather tendency
indicator
Low battery indicator
(weather station)
Maximum icon
Time
Weather forecast icon
Low battery indicator
(transmitter)
Minimum icon

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*When the outdoor signal is successfully received by the weather station, this icon will be switched on. (If not
successful, the icon will not be shown in LCD) So user can easily see whether the last reception was successful
(icon on) or not (icon off).
MANUAL SETTINGS:
The following manual settings can be done in the setting mode:
12/24 hour time display setting
Time setting
Calendar (year, month and day)
ºF/ºC temperature unit setting
Press and hold the SET key for about 3 seconds to advance to the setting mode:
12/24 HOUR TIME DISPLAY SETTING
Flashing

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To set the time format in 12h or 24h display:
1. “12h” or “24h” will flash. (default 12h)
2. Press the + key to select the “12h” or “24h” display mode.
3. Confirm with the SET key and enter the “Manual time setting”.
MANUAL TIME SETTING
1. The hour digit will flash. Use the +key to set the hour.
2. Press the SET key to enter the minutes setting.
3. The minutes digits will flash. Use the + key to set the minutes.
4. Press the SET key again to confirm and enter the Calendar setting.
CALENDAR SETTING
The weather station can display year, month and day in setting mode only:
Hour (flashing)
Minute

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1. The year will flash.
2. Use the +key to set the year (between year 2011-2039). Default setting: 2011.
3. Press the SET key again to confirm and to enter the month setting. The month will flash.
4. Use the +key to set the month.
5. Press the SET key again to confirm and to enter the date setting mode. The date will flash.
6. Use the +key to set the date.
7. Confirm all calendar settings with the SET key and enter the “ºF/ºC temperature unit setting”.
°F/°C TEMPERATURE UNIT SETTING
Year (flashing)
Month.Day. (12h display)
Day. Month (24h display)
Flashing

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The default temperature display is set to °F (degree Fahrenheit). To select °C (degree Celsius):
1. The “°F or C” will flash.
2. Use the +key to toggle between “°C” and “°F”.
3. Once the desired temperature unit has been chosen, confirm with the SET key and exit the setting mode.
TO EXIT THE MANUAL SETTING MODE
To exit the manual setting mode anytime during the manual setting, wait for automatic timeout. The mode will return
to normal time display.
WEATHER FORECAST AND TENDENCY
THE WEATHER FORECASTING ICONS
There are 3 weather icons in the top section of LCD which can be displayed in any of the following combinations:
Rainy
Cloudy with sunny
intervals
Sunny

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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 display weather forecasts 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 48 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. 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).

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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), remove the batteries and re-insert them after about 30
seconds. 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. Again, disregard weather forecasts for the next 48
hours as this will allow time for operation at a constant altitude.
THE WEATHER TENDENCY INDICATOR
Working together with the weather icons are the weather tendency indicators (located on the left and right hand side
of the weather icons). When the indicator points upwards, it means that the air-pressure is increasing and the
weather is expected to improve, but when indicator points downwards, the air-pressure is dropping and the weather
is expected to become worse.
Taking this into account, you will see how the weather has changed and how it 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 (sun icon only). Therefore, the next change in the weather will be the cloud with rain
icons since the indicator is pointing downwards.
Note:
Once the weather tendency indicator has registered a change in the air pressure, it will remain permanently
visualized on the LCD.

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INDOOR MIN/MAX TEMPERATURE RECORDS
The current indoor temperature is displayed on the third section of the LCD.
1. Press and release the INDOOR/RESET key repeatedly, the current indoor temperature will alternate between
the MIN/MAX temperature recordings and the current value.
OUTDOOR MIN/MAX TEMPERATURE RECORDS
The current outdoor temperature is displayed on the last section of the LCD.
Minimum
indoor
temperature
MIN icon
(flashing)
Maximum
indoor
temperature
MAX icon
(flashing)
Minimum
outdoor
temperature
MIN icon
(flashing)
Maximum
outdoor
temperature
MAX icon
(flashing)

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1. Press and release the OUTDOOR key repeatedly, the current outdoor temperature will alternate between the
MIN/MAX temperature recordings and the current value.
RESET INDOOR AND OUTDOOR MIN/MAX TEMPERATURE RECORDS
In normal display mode, press and hold the INDOOR/RESET key for 3 seconds to reset ALL indoor and outdoor
minimum/maximum records to current values at the same time.
LOW BATTERY INDICATOR
Low battery indicator is displayed on the LCD when the batteries require changing.
915 MHz RECEPTION CHECK
The weather station should receive the temperature data within 3 minutes after set-up. If the temperature data is not
received 3 minutes after setting up (not successfully continuously, the outdoor display shows “- - -” ), please check
the following points:
1. The distance of the weather station or transmitter should be at least 5 to 6.5 feet (1.5 -2 meters) away from
any interfering sources such as computer monitors or TV sets.
2. Avoid positioning the weather station onto or in the immediate proximity of metal window frames.
3. Using other electrical products such as headphones or speakers operating on the same signal frequency (915
MHz) may prevent correct signal transmission and reception.
4. Neighbors using electrical devices operating on the 915MHz signal frequency can also cause interference.

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Note:
When the 915 MHz signal is received correctly, do not re-open the battery cover of either the transmitter or weather
station, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally
then reset all units (see Setting up above) otherwise transmission problems may occur.
The transmission range is about 200 feet/100 m from the transmitter to the weather station (in open space).
However, this depends on the surrounding environment and interference levels. If no reception is possible despite
the observation of these factors, all system units have to be reset (see Set up).
POSITIONING THE WEATHER STATION:
The weather station may be hung onto wall easily or free standing.
Free standing
With the detachable stand, the weather station can be placed onto any flat surface.

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To wall mount
Before wall mounting, please check that the outdoor temperature value can be received from the
desired locations.
1. Fix a screw (not supplied) into the desired wall, leaving the head extended out by about
5mm.
2. Remove the stand from the weather station by pulling it away from the base and hang the
station onto the screw. Remember to ensure that it locks into place before releasing.
POSITIONING THE TEMPERATURE TRANSMITTER:
Choose a sheltered place. Avoid direct rain or sunshine.
The transmitter is supplied with a holder that may be attached to a wall with the two screws supplied.
The transmitter can also be position on a flat surface by securing the stand to the bottom of the
transmitter.

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To wall mount:
1. Secure the bracket onto a desired wall using the screws and plastic anchors.
2. Clip the remote temperature sensor onto the bracket.
Note:
Before permanently fixing the transmitter wall base, place all units in the desired locations to
check that the outdoor temperature reading is receivable. In event that the signal is not
received, relocate the transmitter or move the units slightly as this may help the signal
reception.
CARE AND MAINTENANCE:
Extreme temperatures, vibration and shock should be avoided as these may cause damage to the unit and
give inaccurate forecasts and readings.
Precautions shall be taken when handling the batteries. Injuries, burns, or property damage may be resulted if
the batteries are in contact with conducting materials, heat, corrosive materials or explosives. The batteries
shall be taken out from the unit before the product is to be stored for a long period of time.
Immediately remove all low powered batteries to avoid leakage and damage. Replace only with new batteries
of the recommended type.