La Crosse Technology WS-9020U User Manual

WS-9020U 915MHZ

INTELLIGENT WEATHER STATION

Instruction Manual

This product offers:

FEATURES

INTELLIGENT WEATHER STATION

LCD
Display

Weather
information
text

INSTANT TRANSMISSION is the state­of-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: Chart the weather as it
happens!

Function Keys

Removable Stand

Hanging hole

Battery
compartment

1

• Immediate update (every 4 seconds!) of all your outdoor data
measured from the transmitters (note: 4 second may vary while
updating)

• WWVB Radio-controlled time with manual setting option

• WWVB reception ON/OFF (user selectable)

• 12/24 hour time display

• Time zone option ±12 hours

• Calendar display (weekday, date, month, year)

• Weather forecasting with 4 weather icons and weather tendency

indicator

• Temperature display in °F/ºC

• Humidity display as RH%

• Indoor temperature and humidity display with MIN/MAX and

time/date of recording

• Outdoor temperature and humidity display with MIN/MAX and
time/date of recording

• Low/High outdoor temperature alarm

• Relative air pressure unit in hPa or inHg

• Air pressure tendency indicator for last 12h (bar graph format)

• “Intelligent” weather information display

• Can receive up to 3 remote transmitters

• LCD contrast selectable

• Low battery indicator

• Display in 5 languages selectable: English, German, French, Italian

and Spanish

• Wall mounting or free standing

REMOTE TEMPERATURE/HUMIDITY SENSOR

• Remote transmission of outdoor temperature and
humidity to the intelligent weather station by 915
MHz signal

• Weather resistant casing

• Wall mounting case

• Mount in a sheltered place. Avoid direct rain and

sun.

2

QUICK SET-UP GUIDE

Hint: Use good quality Alkaline Batteries and avoid
rechargeable batteries.

1. Have the intelligent weather station and remote
temperature/humidity sensor 3 to 5 feet apart.

2. Batteries should be out of both the intelligent weather station and
remote temperature/humidity sensor units for 10 minutes.

3. Place the batteries into the remote temperature/humidity
sensor first and then into the intellige n t weather station .

4. DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.

In this time the intelligent weather station and remote
temperature/humidity sensor will begin to communicate with each other
and the display will show the temperature/humidity, outdoor
temperature/humidity. If the intelligent weather station does not display
all information after the 15 minutes, please retry the set up as stated
above. After all information has been displayed for 15 minutes you can
place your sensors outdoors and set your time.

Important Notes on Set-up and Operation

• The remote temperature/humidity sensor should be placed in a
dry, shaded area.

• Fog and mist will not harm your remote temperature/humidity
sensor but direct rain must be avoided.

• The remote temperature sensor should be placed in a dry,
shaded area. The remote temperature sensor has a range of 330
feet. Keep in mind that the 330 feet is in open air with no
obstructions and that radio waves DO NOT curve around objects.
Actual transmission range will vary depending on what is in the
path of the signal. Each obstruction (roof, walls, floors, ceilings,
thick trees, etc.) will effectively cut signal range in half.

Example: A wireless weather station receiver with a 330 feet
range is mounted on an interior wall, so that the signal has to pass
through one interior wall, one exterior wall, and across the 10 foot
width of the room between the 2 walls. The first wall will reduce
the range to 165 feet, and the second wall will reduce the range to

3

87 feet. Factoring in the 10 foot room, this leaves a maximum of
77 feet of remaining signal range.

This allowance is typically enough for a frame wall with non­metallic siding; however certain materials can reduce range even
further. Metal siding, stucco, and some types of glass can reduce
signal range by as much as ¾ or more, compared to the ½
reduction typical of most obstructions. It is possible to receive a
signal through these materials, however maximum range will be
much less due to their tendency to absorb or reflect a much larger
portion of the sensor’s signal.

• The remote temperature/humidity sensor transmits a signal every
4 seconds – with variations during updating periods. After the
batteries have been installed, the intelligent weather station will
search for the signal for the duration of 45 seconds. If there is no
temperature or humidity reading in the OUTDOOR LCD after 5
minutes, make sure the units are within range of each other, or
repeat the battery installation procedure.

• If a button is pressed before the intelligent weather station
receives the signal from the remote temperature/humidity sensor,
you will need to follow the battery installation procedure again.

To complete the set up of your new wireless intelligent weather station
after the 5 minutes have passed, please follow the steps in the “Manual
Settings” section.

Note:

If the outdoor transmitter signal reception is not successful on the first
frequency of 915MHz for 45 seconds, the frequency is changed to
920MHz, and the learning is tried for another 45 seconds. If it is still not
successful the reception is tried for 45 seconds on 910MHz. This will
also be done during re-synchronization.

BATTERY INSTALLATION

INTELLIGENT WEATHER STATION

4

The intelligent weather station uses 3 x
AA (alkaline recommended) batteries.
When the batteries need to be
replaced the low battery symbol will
appear on the LCD (or replace the
batteries annually). To install and
replace the batteries, please follow the
steps below:

1. Remove the cover.

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

3. Replace battery cover.

REMOTE TEMPERATURE/HUMIDITY SENSOR

Note:

When changing the batteries in any of the units, all units need to be
reset by following the “Quick Set Up Guide” procedures. This is because
a random security code is assigned by the transmitter at start-up, and
this code must be received and stored by the intelligent weather station
in the first few minutes of power being supplied to it.

The remote temperature/humidity sensor uses 2 x AA
(alkaline recommended) batteries. To install and
replace the batteries, please follow the steps below:

1. Remove the battery cover at the front side with a
small screwdriver.

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

3. Replace the battery cover on the unit.

BATTERY CHANGE:

It is recommended to replace the batteries in all units on an annual
basis to ensure optimum accuracy of these units.

Please participate in the preservation of the environment.
Return used batteries to an authorized facility.

5

ABOUT WWVB (Radio Controlled Time)

A

y

The NIST (National Institute of Standards and Technology—Time and
Frequency Division) WWVB radio station is located in Ft. Collins,
Colorado, and transmits the exact time and date signal continuously
throughout the United States at 60 kHz. The signal can be received up
to 2,000 miles away through the internal antenna in the intelligent
weather station. However, due to the nature of the Earth’s Ionosphere,
reception is very limited during daylight hours. The intelligent weather
station will search for a signal every night when reception is best. The
WWVB radio station derives its signal from the NIST Atom ic clock in
Boulder, Colorado. A team of atomic physicists is continually measuring
every second, of every day, to an accuracy of ten billionths of a second
per day. These physicists have created an international standard,
measuring a second as 9,192,631,770 vibrations of a Cesium-133 atom
in a vacuum. For more information on the atomic clock and WWVB
please see the NIST website at
http://www.boulder.nist.gov/timefreq/stations/wwvb.htm

.

FUNCTION KEYS

Intelligent weather station:

The intelligent weather station has 5 easy to use function keys on the
right side of the unit.

6

SET key

CH key

MAX/+ key

MIN/- key

LARM ke

SET key

• Press and hold the key to enter manual setting modes: LCD
contrast, 12/24 hour time display, time zone, daylight saving time
ON/OFF, manual time setting, calendar, WWVB ON/OFF, ºF/ºC
temperature unit, pressure unit, relative pressure setting and
language display

• Confirm weather alarm in the setting mode

• Reset individual MIN/MAX temperature/humidity record

• Turn weather alarm off when sounding

!<deleted bullet>!

CH key (Channel key)

• Select channel 1, 2, or 3 (if more than 1 transmitter is used)

• Exit setting mode

• Detect/Re-detect transmitter’s signal for all channels

• Turn weather alarm off when sounding

MAX/+ key

• Display MAX indoor / outdoor temperature and humidity records
with time of recording

• Increase all values in manual setting modes

• Increase the weather alarm values

• Turn weather alarm off when sounding

• Reset max/min record

MIN/- key

• Display MIN indoor and outdoor temperature and humidity records
with time of recording

• Decrease all values in manual setting modes

• Decrease the weather alarm values

• Turn weather alarm off when sounding

7

• Reset max/min record

A

ALARM key

• Enter the weather alarm time setting mode

• Set next weather alarm in weather alarm setting mode

LCD SCREEN

The LCD screen is split into 6 sections displaying the information for
outdoor data, indoor data, time and date, weather forecast, air pressure
and air pressure history, weather information display.

Outdoor relative

humidity in

RH%

Outdoor
transmitter
identification
number

Indoor relative
humidity in
RH%

Time
display

Signal reception
icon*

Outdoor
temperature
in °F or ºC

Indoor Temperature
in °F or ºC

WWVB reception icon
(for WWVB time)

Calendar
display

ir pressure

tendency

8

Weather
forecast icon

Relative air

*When the signal from the remote temperature/humidity sensor is
successfully received by the intelligent weather station, this signal
reception will be switched on. (If not successful, the icon will not be
shown on LCD) So the user can easily see whether the last reception is
successful (icon on) or not (icon off). On the other hand, the short
blinking of the icon shows that reception is currently taking place.

MANUAL SETTINGS

The following manual settings can be changed when pressing and
holding the SET key for approximately 4 seconds:

• LCD contrast setting

• 12/24 hour time display

• Time zone setting

• Daylight time saving ON/OFF

• Manual time setting

• Calendar setting

• WWVB time reception ON/OFF setting

• °F/°C temperature unit setting

• Air pressure unit setting

9

• Relative pressure value setting

• Language display setting

LCD CONTRAST SETTING

The LCD contrast can be set within 8 levels, from LCD 1 to LCD8
(default setting is LCD 5):

1. Press and hold the SET key for about 4 seconds until the digit
start flashing.

2. Use the MAX/+ or MIN/- key to view all levels of contrast.

3. Select the desired LCD contrast. Press and release the SET key
to confirm selection and to enter the 12/24 Time Display setting.

Last digit flashing

12/24 HOUR TIME DISPLAY SETTING:

The time display can be set to view time in 12 or 24 hour format. The
default time display mode is “12h”. To set to “24h” time display:

1. Use the MAX/+ or MIN/- key to toggle the value.

2. Press and release the SET key to confirm selection and to enter
the Time Zone setting.

Digit flashing

TIME ZONE SETTING

The time zone can be set ±12 hour. The default time zone is set to
Eastern Time zone (“EST”). To set a different time zone:

1. The current time zone value starts flashing.

Digit flashing

10

2. Use the MAX/+ or MIN/- key to set the time zone. The MAX/+ key
increases the value and the MIN/- key decreases the value in
consecutive 1 hour intervals.

3. Press and release the SET key to confirm selection and to enter
the Daylight saving time On/Off setting.

DAYLIGHT TIME SAVING ON/OFF SETTING

The Daylight Saving Time setting may be turned “on” or “off”.

1. The digit “ON” will start flashing on the LCD.

Digit flashing

Flashing

2. Use the MAX/+ or MIN/- key to turn OFF the daylight time saving
function.

3. Press and release the SET key to confirm selection and to enter
the Manual Time setting.

MANUAL TIME SETTING:

In case the intelligent weather station cannot detect the WWVB-signal
(for example due to disturbances, transmitting distance, etc.), the time
can be manually set. The clock will then work as a normal Quartz clock.

Hour
flashing

1. The hour digit will start flashing.

2. Use the MAX/+ or MIN/- key to set the hour.

3. Press again the SET key to switch to the minutes. The minute
digits start flashing.

4. Use the MAX/+ or MIN/- key to set the minutes.

5. Press and release the SET key to confirm selection and to enter
the Calendar setting.

Note:

Minutes
flashing

11