La Crosse Technology WS-7394U User manual

WS-7394U
Wireless 433 MHz
Wireless Weather Station
Instruction Manual

2
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 6
Explanation of LCD Information 7
Function Key Layout 8
Program Mode
Overview of Programming Sequence 8
LCD Contrast Setting 8
Time Zone Setting 9
DST ON/OFF Setting 9
Radio-controlled Time ON/OFF Setting 9-10
12/24-hour Time Mode Setting 10
Setting the Time/Date Manually 10-11
Temperature Measuring Units (ºF/ºC) 12
Air Pressure Measuring Units (inHg/hPa) 12
Relative Pressure Setting 12
Forecast Sensitivity Setting 13
Features and Operation
Minimum/Maximum Temperature/Humidity 14
Multiple Remote Temperature/Humidity Sensors 15-16
Comfort Icon 16
Weather Forecast and Pressure Trend Indicators 16
Weather Icons 16-17
Weather Tendency Arrows 17
Barometric Air Pressure Reading 17
Air Pressure History Bar Chart 17-18
Mounting 19-20
Maintenance and Care 20
Troubleshooting Guide 21
Specifications 22
Warranty Information 23-24

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INVENTORY OF CONTENTS
1. WS-7394U—indoor weather station
2. TX6U—remote temperature
(temperature/humidity) sensor
3. Instruction manual and warranty card
ADDITIONAL EQUIPMENT (not
included)
1. Five fresh AA 1.5V alkaline batteries.
2. One wall-mounting screw (optional)
ABOUT WWVB (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 indoor weather station. However, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours. The indoor weather
station 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, measuring 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

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QUICK SET-UP GUIDE
Hint: Use good quality Alkaline Batteries and avoid rechargeable batteries.
1. Have the indoor weather station and remote temperature sensor 3
to 5 apart.
2. Batteries should be out of both units for 15 minutes.
3. Place the batteries into the remote temperature sensor first then
into the indoor weather station.
(All remote temperature sensors must be started before the indoor
weather station)
4. DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.
In this time the indoor weather station and remote temperature sensor will start
to talk to each other and the indoor weather station will show both the indoor
temperature and humidity and the outdoor temperature. If the indoor weather
station does not display all values after the 15 minutes please retry the set up as
stated above. After all values are displayed for 15 minutes you can place your
remote temperature sensor outdoors and set your time.
The remote temperature sensor should be placed in a dry, shaded area. The
remote temperature sensor has a range of 80 feet. Any walls that the signal will
have to pass through will reduce distance. An outdoor wall or window will have
20 to 30 feet of resistance and an interior wall will have 10 to 20 feet of
resistance. Your distance plus resistance should not exceed 300 ft. in a straight
line.
NOTE: Fog and mist will not harm your remote temperature sensor but direct
rain must be avoided.
To complete the set up of your indoor weather station after the 15
minutes have passed please follow the steps in the Detailed Set Up
Guide.
Note: The remote temperature sensor transmits a signal every 3 minutes; after
the batteries have been installed, the indoor weather station will search for the
signal for a duration of 5 minutes. If there is no temperature reading in the
OUTDOOR LCD after 5 minutes, make sure the units are within range of each
other, or repeat the battery installation procedure.

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DETAILED SET-UP GUIDE
I. Battery Installation
Batteries will fit tightly. To avoid start-up problems, make sure that the
batteries do not spring free. Also be sure to insert alkaline batteries into the
remote temperature sensor first, then the indoor weather station. Initial set
up should be done with the remote temperature sensor and indoor weather
station in the same room. The units should be permanently mounted only
after the signal reception has been verified.
A. Remote Temperature and Humidity Sensor
1. Remove the mounting bracket. The bracket
snaps on and off easily.
2. Remove the battery cover, by sliding the cover
down.
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. 4. Replace the battery cover by sliding
upwards. Be sure battery cover is on securely.
B. Indoor Weather 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 information
from the TX4U
sensor, no data will
be received from that
sensor until reset.
4. Replace the battery
cover.
Battery
Cover

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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 “WE.1” as the default date (2004 as the year).
3. The indoor temperature and humidity, and barometric air pressure
(as 29.91 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
temperature 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 indoor weather station it will
automatically search for the WWVB 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 indoor 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 and will automatically resume every two hours until the
signal is successfully captured.
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 indoor weather station in a
window facing Colorado, at least six feet from any electrical
source (computers, televisions, refrigerators, etc.). Do not move
the indoor 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 indoor weather station will
conduct a search every night at midnight and correct to the
accurate 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.

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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
(
U
p
to 3 Total
)

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IV. Function Key Layout
A. The below picture shows the four function keys used in programming
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
indoor weather center. 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
1. LCD Contrast 2. Time Zone 3. DST ON/OFF
4. Radio-controlled
Time ON/OFF 5. 12/24-hour time mode 6. Hour
7. Minute 8. Year 9. Month
10. Date 11. °F/°C 12. inHg/hPa
13. Relative pressure
setting 14. Forecast sensitivity
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 the Time Zone setting.

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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
setting 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-controlled Time ON/OFF setting.
E. Radio-controlled Time 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.

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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-hour Time 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.
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. Setting The 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. Setting The 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.