La Crosse Technology WS-9740U-IT User manual

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Contents
Language Page
___________________________________________________________________
English 1
French 47
Spanish 96

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TABLE OF CONTENTS
Topic Page
Inventory of Contents 3
Features 4
Setting Up 6
Battery Installation 8
Function keys 10
LC Screen and Settings 12
Atomic time -WWVB Radio Controlled Time 14
Manual Settings 15
Weather Man Icon 20
isplay of Indoor Temperature and Humidity Reading 21
isplay of Outdoor Temperature Reading 22
isplay of Outdoor Minimum and Maximum records 23
isplay of Indoor Minimum and Maximum records 24
Ice Alarm 26
915 MHz Reception 27
Mounting 28
Care and Maintenance 31
Specifications 32

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Warranty Information 33
FAQ
INVENTORY OF CONTENTS
1. Wireless Weather Station
2. Wireless Temperature Sensor (TX37U) and mounting bracket.
3. Instruction Manual
This product o ers: INSTANT TRANSMISSION
is the state
-
o
-
the
-
art
new wireless transmission technology,
exclusively designed and developed by LA
CROSSE TECHNOLOGY. INSTANT
TRANSMISSION
o ers you an immediate update
(every 4 seconds!) o all your outdoor data
measured rom the transmitters: ollow your
climatic variations in real-time!

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FEATURES:
The Weather Station
Foldout
Stand
Battery
compartment
cover
Function
Keys
LC
isplay
Hanging hole
Ice Alarm Key

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• Atomic time function (WWVB Radio controlled time) with manual setting options
• aylight Saving Time ON/OFF
• Hour and minute display
• Calendar display
• Time zone option 0 to 12 hours
• Wireless transmission at 915 MHz
• Outdoor signal reception intervals at 4-second
• isplay one of the multiple easy-to-read Temperature condition icons featured by
Weather Girl
• Temperature display in Fahrenheit (°F) or Celsius (°C) selectable
• Indoor and Outdoor temperature display with MIN/MAX recording
• All MIN/MAX recordings can be reset
• Low battery indicator
• Wall hanging or free standing

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The Outdoor Temperature Sensor
• Remote transmission of outdoor temperature to Weather
Station by 915 MHz
• Weather-resistant casing
• Wall mounting case
• Mount in a sheltered place. Avoid direct rain and sunshine
SETTING UP:
1. First, insert the batteries into the temperature sensor. (see “Install and replace
batteries in the temperature sensor“).
2. Immediately after and within 2 minutes, 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 LC will light up briefly. Following the time as 12:00 and
the "Oscar Outlook" icon will be displayed. If these are not displayed after 60

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seconds, remove the batteries and wait for at least 10 seconds before reinserting
them.
3. After inserting the batteries into the sensor, the Weather Station will start receiving
data from the sensor. The outdoor temperature and the signal reception icon should
then be displayed on the Weather Station. If this does not happen after 5 minutes, the
batteries will need to be removed from both units and reset from step 1.
4. In order to ensure sufficient 915 MHz transmission there should be no more than 330
feet (100 meters) between the final position of the Weather Station and the sensor
(see notes on “Mounting” and “915 MHz Reception”).
Note:
• The Weather Station will receive one outdoor sensor only.
• If the signal reception is not successful on the first frequency (915MHz) for 22
seconds, the frequency is changed to 920MHz and the reception is tried another 22
seconds. If still not successful the reception is tried for 22 seconds on 910MHz. This
will also be done for re-synchronization.
• If after 10 minutes, the Atomic time (WWVB time) signal has not been received, press
the SET key to manually enter a time initially.
• aily WWVB reception is attempted at full hour between 12:00 am to 6:00 am. If the
reception is successful, there will no reception attempt until the following day. When
this is successful, the received time will override the manually set time. The date is

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also updated with the received time. (Please refer also to notes on “Atomic auto-set
time - WWVB Radio controlled Time” and “Manual Time Setting”).
BATTERY INSTALLATION
INSTALL AND REPLACE BATTERIES IN THE WEATHER STATION
The Weather Station uses 2 x AAA, IEC LR3, 1.5V Alkaline 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 compartment cover.

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INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE SENSOR
The temperature sensor uses 2 x AA, IEC LR6, 1.5V Alkaline battery.
To install and replace the batteries, please follow the steps below:
1. Pull out the battery holder at the bottom of the sensor.
2. Insert the batteries, observing the correct polarity (see marking).
3. Replace the battery holder 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 random security code is assigned by the
sensor 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 Speci ications below).

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Please participate in the preservation o the environment. Return used
batteries to an authorized depot.
FUNCTION KEYS:
Weather Station:
The Weather Station has four easy to use function keys.
SET key (Manual Setting):
• Press to enter the set mode for the following functions: Time zone, aylight saving
SET key
MIN/
MAX key
+ key
Ice Alarm key