La Crosse Technology Tomorrow's Weather Today WS-7394U-IT User manual

WS-7394U-IT
Wireless 915 MHz
WirelessWeather Station
Instruction Manual
FCC ID: OMOTX29U (transmitter)
RF Exposure mobile:
The internal / external antennas used for this mobile transmitter must
provide a separation distance of at least 20 cm (8 inches) from all
persons and must not be co-located or operating in conjunction with
any other antenna or transmitter.”
Statement according to FCC part 15.19:
This device complies with Part 15 of the FCC Rules. Operation is sub-
ject to the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Statement according to FCC part 15.21:
Modifications not expressly approved by this company could void the
user’s authority to operate the equipment.
Statement according to FCC part 15.105:
NOTE: This equipment has been tested and found to comply with the
limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by turn-
ing the equipment off and on, the user is encouraged to try to correct
the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help

Contents
Language Page
English 2
French 28
Spanish 54

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TABLE OF CONTENTS
Topic Page
Inventory of Contents/ Additional Equipment 3
About WWVB 3
Quick Set Up Guide 4
Detailed Set Up Guide
Battery Installation 5
Start Up Sequence 7
Explanation of LCD Information 8
Function Key Layout 9
Program Mode
Overview of Programming Sequence 9
LCD Contrast Setting 9
Time Zone Setting 10
DST ON/OFF Setting 10
Radio-controlled Time ON/OFF Setting 11
12/24-hour Time Mode Setting 11
Setting the Time/Date Manually 12
Temperature Measuring Units (˚F/˚C) 14
Air Pressure Measuring Units (inHg/hPa) 14
Relative Pressure Setting 14
Forecast Sensitivity Setting 15
Features and Operation
Minimum/Maximum Temperature/Humidity 16
Multiple Remote Temperature/Humidity Sensors 17
Comfort Icon 18
Weather Forecast and Pressure Trend Indicators 18
Weather Icons 19
Weather Tendency Arrows 19
Barometric Air Pressure Reading 19
Air Pressure History Bar Chart 20
Mounting 20
Maintenance and Care 23
Troubleshooting Guide 23
Specifications 24
Warranty Information 25
This product offers:
INSTANTTRANSMISSION is the
state-of-the-art new wireless
transmission technology, exclu-
sively designed and developed by
LA CROSSETECHNOLOGY.
IN-
STANT TRANSMISSION
offers
you can an immediate update (every 4 seconds!) of all your outdoor
data measured from the transmitters:follow your climatic variations
in real-time!
INVENTORY OF CONTENTS
1.WS-7394U-IT- Wireless Weather Station (Figure 1)
2.TX29U-IT-remote temperature sensor (figure 2)
3. Instruction manual and warranty card
ADDITIONAL EQUIPMENT (not included)
1. Four fresh AA 1.5V alkaline batteries.
2. One wall-mounting screw (optional)
ABOUTWWVB (radio-controlled time)
The NIST (National Institute of Standards and Technology-Time and
Frequency Division) radio station, WWVB, is located in Ft. Collins,
Colorado and transmits the exact time 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 Wireless Weather
Station. However, due to the nature of the Earth’s Ionosphere, recep-
Figure 1 Figure 2
Mounting
Bracket TX29U-IT remote
temperature sensor

Battery Cover
SIZE AA LR6 SIZE AA LR6
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tion is very limited during daylight hours. The Wireless Weather Sta-
tion will search for a signal every night when reception is best. The
WWVB radio station derives its signal from the NIST Atomic clock in
Boulder, Colorado. A team of atomic physicists continually measure
every second of every day to an accuracy of ten billionths of a second
a day. These physicists have created an international standard, mea-
suring a second as 9,192,631,770 vibrations of a Cesium 133 atom in
a vacuum. For more information about WWVB please see the NIST
website at http://www.boulder.nist.gov/timefreq/stations/wwvb.htm
QUICK SET-UP GUIDE
Hint: Use good quality Alkaline Batteries and avoid rechargeable
batteries.
1. Have the Wireless Weather Station and remote temperature sen-
sor 3 to 5 feet apart.
2. Batteries should be out of both units for 10 minutes.
3. Place the batteries into the remote temperature sensor first then
Wireless Weather Station.
(All remote temperature sensors must be started before the
WirelessWeather Station)
4. DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.
In this time theWireless Weather Station and remote temperature sen-
sor will start to talk to each other and the display will show both the
indoor temperature and humidity, and an outdoor temperature. If the
Wireless Weather Station does not display both temperatures after
the 15 minutes please retry the set up as stated above. After both
indoor and outdoor temperatures are displayed for 15 minutes you can
place your remote temperature sensor outdoor and set your time.
The remote temperature sensor should be placed in a dry, shaded
area. The 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: AWirelessWeather Station 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 feet width of the room be-
tween the 2 walls. The first wall will reduce the range to 165 feet, and
the second wall will reduce the range to 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 non-metallic
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 3/4 or more, compared to the 1/2 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.
DETAILED SET-UP GUIDE
I. BATTERY INSTALLATION (When one temperature sensor is
being used)
1. First, insert the batteries to the temperature sensor (see “A. Re-
moteTemperature Sensor” below).
2. Within 2 minutes of powering up the sensor, insert the batteries to
the Weather Station (see “B. Wireless Weather Station” below).
Once the batteries are in place, all segments of the LCD will light
up briefly. Following the indoor temperature and humidity, and the
time as 12:00 will be displayed. If they are not shown in LCD 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 re-
ceiving data signal from the sensor.The outdoor temperature 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 and the signal reception icon is no longer
shown.
A. RemoteTemperature Sensor
1. Remove the mounting bracket. The bracket snaps on and off easily.
2. Remove the battery cover, by sliding the cover down.
Battery Compartment

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3. Observing the correct polarity install 2 AA batteries. The batteries
will fit tightly (to avoid start-up problems make sure they do not
spring free).
4. Replace the battery cover by sliding upwards.Be sure battery cover
is on securely.
B. WirelessWeather Station
1. Remove the battery cover (the cover has white writing on it).
2. Observe the correct polarity, and install two Alkaline AA batteries.
3. Do not press any buttons for at least ten minutes. If a button is
pressed before the indoor weather station has received informa-
tion from the TX29U-IT sensor, no data will be received from that
sensor until reset.
4. Replace the battery cover.
*When the signal is successfully received by the Weather Station,
the icon will be switched on.(If not successful, the icon will not be
shown in LCD) So the user can easily see whether the last recep-
tion was successful (icon on) or not (icon off). On the other hand,
the short blinking of the icon shows that a reception is being done
now.
•If the signal reception is not successful on the first frequency
(915MHz) for 45 seconds, the frequency is changed to 920MHz
and the learning is tried another 45 seconds. If still not successful
the reception is tried for 45 seconds on 910MHz.This will also be
done for re-synchronization.
II. Start Up Sequence
A. Initial Start
1. Immediately after the batteries have been installed the LCD will
completely light up for a brief moment.
2. All information will then appear in normal mode, with “12:00”as the
default time and “SA.1” as the default date (2006 as the year).
3. The indoor temperature and humidity, and barometric air pressure
(as 29.92 inHg relative RH) will also be displayed.
4. There is a “satellite”icon that appears in the bottom portion of the
LCD, to the left of the outdoor temperature- this icon informs the
user that the indoor weather station is looking for signals from the
remote temperature sensor. Within five minutes the remote tem-
perature should be displayed-if not, remove batteries from all units
and repeat battery installation, the remote temperature sensor first,
then the indoor weather station.
B. WWVB Reception
1. Once the batteries are installed in the WirelessWeather Station it
will automatically search for theWWVB signal.If it receives a good
signal (which is unlikely during daylight hours in most locations),
the WWVB reception indicator (looks like a tower icon) will flash.
The Wireless Weather Station requires five full minutes of good
reception to successfully capture the signal and set to the correct
hour, minute, second, month, day and year.If the signal reception
is not successful within ten minutes, the signal search will be
cancelled. Next reception will take place the next day.
2. The signal is sent from Ft. Collins, Colorado only and is similar to
an AM radio signal. Atmospheric interferences such as storms,
sunspots, and even sunlight will cause the signal to not travel as
far.
3. To maximize reception, place the Wireless Weather Station n in a
window facing Colorado, at least six feet from any electrical source
(computers, televisions, refrigerators, etc.). Do not move the in-
door weather station while it is searching for the signal.
4. The time and date can be manually set.Once the signal is captured,
it will override any time and date set to the time zone selected.
5. Once the time and date are set, the Wireless Weather Station will
conduct a search every night at midnight and correct to the accu-
rate time and date (Daylight Saving Time is automatic).If the signal
has been received in the past 24 hours, the reception indicator will
be displayed. After a successful reception, no more reception at-
tempt would be made until the following day.
Sensor signal
reception icon*
Battery cover

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III. Explanation of LCD Information
A. The below picture highlights the LCD features.
B. There are many different modes the indoor weather station can be
set to. The LCD shown is the normal operating mode, and your
actual data shown will be different based on your local settings and
conditions.
Radio-controlled
time
WWVB Reception
Indicator
Date Display
Comfort Icon
Indoor Temperature
Humidity Display
Air Pressure Trend
Indicator
Forecast Icon
Barometric Air
Pressure
12-hour Air
Pressure History
Outdoor
Temperature Display Remote Sensor
Number (Up to 3
Total)
IV.Function Key Layout
A. The below picture shows the four function keys used in program-
ming and operation of your indoor weather station
V. Program Mode
The program mode is laid out in a manner that allows you to program
each function separately, or you can follow the instructions entirely to
program the Wireless Weather Station. Complete programming is
usually done for the initial set-up, and will require you to skip step 1,2
and 3 of each programming section. The programming mode can be
exited at any time by either pressing the“CH” button, or waiting for the
15-second time-out to take effect.
A. Overview of programming mode sequence
B. LCD Contrast Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “OUT/+” button to select the desired LCD
contrast setting.
4. Press and release the “SET” button to confirm the LCD contrast
setting and continue to theTime Zone setting.
1. LCD Contrast 2. Time Zone 3. DST ON/OFF
4. Radio-controlled 5. 12/24-hour 6. Hour
Time ON/OFF time mode
7. Minute 8. Year 9. Month
10. Date 11. ˚F/˚C 12. inHg/hPa
13. Relative pressure setting 14. Forecast sensitivity

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C. Time Zone Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button once more to advance to the
Time Zone setting.
4. A number will flash to the left of the letter“h” at the top of the display
just below the time display.
5. Press and release the “OUT+” button to select the desired time
zone.
6. Press and release the “SET”button to confirm the Time Zone set-
ting and continue to the DST ON/OFF setting.
D. DST ON/OFF Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button twice more to advance to the
DST ON/OFF setting.
4. “DST” will appear above the indoor temperature/humidity display
and “ON”or “OFF” will flash above that.
5. Press and release the “OUT/+”button to select DST ON/OFF.
Note: Some locations (Arizona and parts of Indiana) do not follow
Daylight Saving Time.
6. Press and release the “SET” button to confirm the DST ON/OFF
setting and continue to the radio-controlledTime ON/OFF setting.
E. Radio-ControlledTime ON/OFF Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button three more times to advance to
the radio-controlled time ON/OFF setting.
4. “RCC” will appear above the indoor temperature/humidity display
and “ON”or “OFF” will flash above that.
5. Press and release the “OUT/+”button to select radio-controlled time
ON/OFF setting.
6. Press and release the “SET”button to confirm the radio-controlled
time ON/OFF setting and continue to the 12/24-hour Time Mode
setting.
F. 12/24-hourTime Mode
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button four more times to advance to
the 12/24-hour time mode setting.
4. “12h” or “24h” will flash above the indoor temperature/humidity
display.
5. Press and release the “OUT/+”button to select 12 or 24-hour time
mode.

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Note: In 12h mode “PM” will appear to the left of the time during PM
hours. If the time is not within the PM hours nothing will be displayed.
Be sure to set the time to the correct AM/PM time to ensure automatic
reception.
6. Press and release the “SET”button to confirm the 12/24-hour time
mode setting and continue to the Hour setting.
G. SettingThe Hour Manually
The WWVB signal will override any manual set time and date
information.The time will be based on the time zone selected.
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button five more times to advance to
the Manual Hour setting.
4. The hour will begin to flash at the top of the display.
5. Press and release the “OUT/+”button to select the desired hour.
6. Press and release the “SET”button to confirm the hour setting and
continue to the Minute setting.
H. SettingThe Minutes Manually
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button six more times to advance to
the Manual Minutes setting.
4. The minutes will begin to flash at the top of the display.
5. Press and release the “OUT/+”button to select the desired minutes.
6. Press and release the “SET” button to confirm the minutes and
continue to theYear setting.
I. SettingTheYear Manually
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button seven more times to advance
to the ManualYear setting.
4. The year will begin to flash below the time display.
5. Press and release the “OUT/+” button to select the desired year.
6. Press and release the “SET” button to confirm the year and con-
tinue to the Month setting.
J. SettingThe Month Manually
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button eight more times to advance to
the Manual Month setting.
4. The Month will begin to flash below the time display.
5. Press and release the “OUT/+”button to select the desired month.
6. Press and release the “SET”button to confirm the month and con-
tinue to the Date setting.
K. SettingThe Date Manually
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button nine more times to advance to
the Manual Date setting.
4. The date will begin to flash below the time display.
5. Press and release the “OUT/+”button to select the desired date.
6. Press and release the “SET” button to confirm the date and con-
tinue to the Temperature Measuring Units setting.

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L. Temperature Measuring Units Selection (˚F or ˚C)
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET” button ten more times to advance to
the Temperature Measuring Units setting.
4. °F or °C will flash at the top of the display.
5. Press and release the “OUT/+” button to select the desired tem-
perature-measuring unit.
6. Press and release the “SET” button to confirm the temperature-
measuring unit and continue to the Air Pressure Measuring Units
setting.
M. Air Pressure Measuring Units Selection (inHg/hPa)
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button eleven more times to advance
to the Air Pressure Measuring Units setting.
4. inHg or hPa will flash at the top of the display.
5. Press and release the “OUT/+”button to select the desired air pres-
sure-measuring unit.
6. Press and release the “SET” button to confirm the air pressure-
measuring unit and continue to the Relative Pressure setting.
N. Relative Pressure Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button twelve more times to advance
to the Relative Pressure setting.
4. The barometric air pressure will flash in the middle of the display,
just below the forecast icon
5. Press and release the “OUT/+” or “IN” button to select the desired
relative air pressure value.
6. Press and release the “SET” button to confirm the relative pressure
setting and continue to the Forecast Sensitivity setting.
O. Forecast Sensitivity Setting
1. Press and hold the “SET”button for five seconds.
2. “lcd” will appear at the top of the display and a number will flash
next to it.
3. Press and release the “SET”button thirteen more times to advance
to the Forecast sensitivity setting.
4. The two air pressure tendency arrows will begin flashing on either
side of the forecast icon and a flashing number will appear under
the forecast icon.
5. Press and release the “OUT/+”button to select the desired forecast
sensitivity setting.

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Note: Barometric air pressure is usually reported as “relative air
pressure”.This reading is based on the combination of absolute air
pressure and altitude.In general, an increase in altitude will result in a
decrease in air pressure. Relative air pressure will make readings in
nearby locations relative to each other to allow for proper forecasting.
The absolute air pressure reading in the Weather Center cannot be
calibrated, only the relative air pressure.
6. Press and release the “SET” button to confirm the forecast sensi-
tivity setting.
THE MANUAL SETTING IS NOW COMPLETED
FEATURES AND OPERATIONS
A. Minimum and MaximumTemperature and Humidity
1. Indoor Minimum and Maximum Temperature and Humidity
The indoor weather station automatically stores the minimum and
maximum indoor temperature and humidity. The minimum and maxi-
mum values are updated automatically when a new minimum or maxi-
mum is recorded, or until manually reset.
a. From the normal display mode, press and release the “IN”key once
to view the indoor maximum temperature and humidity (“MAX” will
be displayed above the indoor temperature and humidity).
b. Press and release the “IN” key again to view the indoor minimum
temperature and humidity.
c. Press and release the “IN”key again to return to the normal mode
(timeout of viewing minimum/maximum values will occur if no keys
are pressed for fifteen seconds).
Note: To reset the indoor minimum and maximum temperature and
humidity, first display the values you wish to reset (minimum or
maximum). Next press and hold the “SET” key for at least three
seconds. You will see then that the values will reset to the current
temperature and humidity and corresponding time.
2. Outdoor Minimum and MaximumTemperature
The indoor weather station automatically stores the minimum and
maximum outdoor temperature.The minimum and maximum values
are updated automatically when a new minimum or maximum is
recorded, or until manually reset.
a. From the normal display mode, press and release the “OUT/+”key
once to view the outdoor maximum temperature (“MAX” will be dis-
played above the outdoor temperature).
b. Press and release the “OUT/+” key again to view the outdoor mini-
mum temperature.
c. Press and release the “OUT/+” key again to return to the normal
mode (timeout of viewing minimum/maximum values will occur if
no keys are pressed for fifteen seconds).
Note: To reset the outdoor minimum and maximum temperature, first
display the values you wish to reset (minimum or maximum). Next
press and hold the “SET”key for at least three seconds. You will see
then that the values will reset to the current temperature and corre-
sponding time.
B. Multiple RemoteTemperature Sensors
The WS-7394U-IT is able to receive signals from 2 additional tem-
perature sensors.The following are instructions for the set-up of tem-
perature sensor units with theWS-7394U-IT.These extra sensors can
be purchased through the same dealer as this unit.
1. Remove all the batteries from the receiver and sensor(s) and wait
60 seconds. During these 60 seconds, press any button 20 times
to discharge any excess power.
2. Insert the batteries to the first temperature sensor.
3. Within 2 minutes of powering up the first sensor, insert the batter-
ies to the Weather Station.Once the batteries are in place, all seg-
ments of the LCD will light up briefly. Following the indoor tempera-
ture and humidity, and the time as 12:00 will be displayed. If they
are not shown in LCD after 60 seconds, remove the batteries and
wait for at least 60 seconds before reinserting them.
4. The outdoor temperature from the first sensor (channel 1) should
then be displayed on the Weather Station. If this does not happen
and the signal reception icon is not shown, after 2 minutes, the
batteries will need to be removed from both units and reset from
step 1.
5. Insert the batteries to the second sensor as soon as the outdoor
temperature readings from the first sensor are displayed on the
Weather Station.
NOTE: You must insert the batteries into the second sensor within 10
seconds of reception of the first sensor.
6. The outdoor temperature from the second sensor and the“channel
2” icon should then be displayed on the Weather Station. If this
does not happen after 2 minute, the batteries will need to be re-
moved from all the units and reset from step 1.