iT+ WEATHER STATION Instruction Manual

WEATHER STATION

« Instant Transmission+» is the up and coming state-of-the-art new wireless
transmission technology, exclusively designed and developed by LA
CROSSE TECHNOLOGY.
“IT +” offers you an immediate update of all your outdoor data measured
from the transmitters: follow your climatic variations in real-time!

Instruction Manual

INTRODUCTION:

Congratulations on purchasing this state-of-the-art weather station as an example of
innovative design and quality piece of engineering. Providing radio controlled time, date,
calendar, Moon phase, indoor and outdoor temperature, indoor and outdoor relative
humidity, and air pressure history information. This unit will never keep you guessing on
current and future weather conditions. Operation of this product is simple and
straightforward. By reading this operating manual, the user will receive a better
understanding of the Weather Station together with the optimum benefit of all its features.

FEATURES:

The Weather Station

LCD Display

Function keys

• DCF Radio controlled time with manual setting option

• Time reception ON/OFF (user selectable)

• 12/24 hour time display

• Time zone option ±12 hours

Hanging hole

Battery
compartment

Stand

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• Weekday and day calendar display (year and month only in setting mode)

• Alarm setting with snooze function

• Display 12 Moon phases throughout the year

• Weather forecasting with weather tendency indicator

• Indoor comfort indicator

• Temperature display in ºC/ºF

• Indoor and outdoor temperature display with MIN/MAX records and time of reception

• Humidity data display as RH%

• Indoor and outdoor humidity display with MIN/MAX records

• Relative air pressure hPa/ inHg with adjustable reference value

• Weather icon sensitivity setting

• Relative air pressure history for the past 24 hours (electronic barometer with

barometric pressure trend)

• LCD contrast selectable

• Wireless transmission at 868 MHz

• Signal reception intervals at 4 seconds

• Can receive up to 3 outdoor transmitters

• LED back light

• Low battery indicator

• Table standing or wall mounting

Thermo-Hygro Transmitter

• Remote transmission of outdoor temperature and humidity to
weather station by 868 MHz signals

• Wall mounting case

TO INSTALL AND REPLACE BATTERIES IN THE WEATHER STATION

The Weather Station uses 3 x AA, IEC LR6, 1.5V batteries. To
install and replace the batteries, please follow the steps
below:

1. Insert finger or other solid object in the space at the
bottom center of the battery compartment and lift up to
remove the cover.

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

3. Replace compartment cover.

TO INSTALL AND REPLACE BATTERIES IN THE THERMO-HYGRO
TRANSMITTER

The Thermo-Hygro Transmitter uses 2 x AA, IEC, LR6, 1.5V batteries. To install and replace
the batteries, please follow the steps below:

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1. Remove the cover.

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

3. Replace the battery cover.

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 due to a random
security code assigned by the transmitter at start-up. This code must be
received and stored by the W eather Station in the first 3 minutes of power

being supplied to the transmitter.

BATTERY CHANGE:

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

SETTING UP

WHEN ONE TRANSMITTER IS USED

1. First, insert the batteries in the transmitter (see “How to install and replace batteries

2. Within 2 minutes of powering up the transmitter, insert the batteries in the Temperature

3. After the batteries are inserted, the Weather station will start receiving data signal from

4. In order to ensure sufficient 868 MHz transmission however, the distance between the

Note:

In the event of changing batteries of the units, ensure the batteries do not spring free from
the contacts. Always wait at least 1 minute after removing the batteries before reinserting,
otherwise start up and transmission problems may occur.

WHEN MORE THAN ONE TRA NSMITTER IS USED

1. User shall remove all the batteries from the Weather Station and transmitters, and wait

2. Insert the batteries in the first transmitter.

3. Within 2 minutes of powering up the first transmitter, insert the batteries in the Weather

4. The outdoor temperature and humidity data from the first transmitter (channel 1)

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

in the Termo-hygro outdoor transmitter” above).

Station (see “How to install and replace batteries in the Weather Station” above).
Once the batteries are in place, all segments of the LCD will light up briefly and a short
signal tone will sound. Following the indoor temperature/humidity and the time as 0:00
will be displayed. If these information are not displayed on the 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.

the transmitter. The outdoor temperature and humidity data 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.

Weather Station and the transmitter should not be more than 100 meters (see notes on
“Positioning” and “868 MHz Reception”).

60 seconds.

Station. Once the batteries are in place, all segments of the LCD will light up briefly
and a short signal tine will sound. Following the indoor temperature/humidity and the
time as 0:00 will be displayed. If these information are not displayed on the LCD after
60 seconds, remove the batteries from both units and wait for at least 60 seconds
before reinserting them.

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should then be displayed on the Weather Station. Also, the signal reception icon will be
displayed. If this does not happen after 2 minutes, the batteries will need to be
removed from both units and reset from step 1.

5. Insert the batteries in the second transmitter as soon as the outdoor temperature and
humidity readings from the first transmitter are displayed on the Weather Station.

User shall insert the batteries into the second transmitter within 45 seconds

Note :

after the Weather Station displays the information of the first transmitter.

6. The outdoor temperature and humidity from the second transmitter and the "channel 2"
icon should then be displayed on the Weather Station. If this does not happen after 2
minutes, the batteries will need to be removed from all the units and reset from step 1.

7. Insert the batteries in the third transmitter as soon as the "channel 2" icon and outdoor
data are displayed on the Weather Station. Then within 2 minutes, the channel 3
outdoor data from the third transmitter will be displayed and the channel icon will shift
back to "1" once the third transmitter is successfully received. If this is not happen, user
shall restart the setting up from step 1.

User shall insert the batteries into the third transmitter within 45 seconds after

Note :

the Weather Station displays the information of the first transmitter. Or immediately
after reception of the second transmitter is finished.

8. In order to ensure sufficient 868 MHz transmission however, the distance between the
Weather Station and the transmitter should not be more than 100 meters (see notes on
“Positioning” and “868 MHz Reception”).

IMPORTANT:

Transmission problems will arise if the setting for additional sensors is not followed as
described above. Should transmission problems occur, it is necessary to remove the
batteries from all units and start again the set-up from step 1.

RESETTING

The Weather Station and the Thermo-hygro transmitter need to be reset when one of the
following conditions occur:

•

Unsuccessful 868MHz signal reception.

•

Malfunction on the units.

•

Batteries replacement.

For resetting, remove all batteries from the units. Wait at least for 1 minute before powering
up the Weather station again. Proceed from step 1 in “Setting Up”.

DCF RADIO CONTROLLED TIME

The time base for the radio controlled time is a Cesium Atomic Clock operated by the
Physikalisch Technische Bundesanstalt Braunschweig which has a time deviation of less
than one second in one million years. The time is coded and transmitted from Mainflingen
near Frankfurt via frequency signal DCF-77 (77.5 kHz) and has a transmitting range of
approximately 1,500 km. Your radio-controlled Weather Station receives this signal and
converts it to show the precise time in summer or wintertime.
The quality of the reception depends greatly on the geographic location. In normal cases,
there should be no reception problems within a 1500km radius of Frankfurt.

DCF reception is done twice daily at 02:00 and 03:00 am. If the reception is not successful at
03:00 am, then the next reception takes place the next hour and so on until 06:00am, or until
the reception is successful. If the reception is not successful at 06:00 am, then the next
attempt will take place the next day at 02:00 am.

Once the outdoor data reception test period is completed, the DCF tower icon in the clock
display will start flashing in the upper left corner. This indicates that the clock has detected
that there is a radio signal present and is trying to receive it. When the time code is received,
the DCF tower becomes permanently lit and the time will be displayed.

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If the tower icon flashes, but does not set the time or the DCF tower does not appear at all,
then please take note of the following:

• Recommended distance to any interfering sources like computer monitors or TV sets is
a minimum of 1.5 - 2 meters.

• Within ferro-concrete rooms (basements, superstructures), the received signal is
naturally weakened. In extreme cases, please place the unit close to a window and/ or
point its front or back towards the Frankfurt transmitter.

• During nighttime, the atmospheric disturbances are usually less severe and reception
is possible in most cases. A single daily reception is adequate to keep the accuracy
deviation below 1 second.

FUNCTION KEYS:
Weather Station:

The Weather Station has 5 easy to use function keys:

SET key

IN key

SET key

OUT/+ key

ALM/DATE key

SNOOZE/CH key

• Press and hold the key to enter manual setting modes: LCD contrast, time zone, time
reception ON/OFF, 12/24 hour display, manual time setting, calendar, temperature
°C/°F, pressure hPa/inHg, relative pressure value, and weather icon sensitivity setting

• Reset all MIN/MAX records

• Stop the alarm during alarm ringing

• Stop snooze mode

• Back-light on

ALM/DATE key

• Press and hold key for 3 seconds to enter the alarm setting mode

• Active/de-active the alarm time

• Stop the alarm during alarm ringing

• Stop snooze mode

• Display date

• Back-light on

IN key

• Press to toggle between MAX/MIN and current indoor temperature/humidity data

• Press to set the alarm hour (inside alarm setting mode)

• Decrease relative pressure value (within manual set mode)

• Stop the alarm during alarm ringing

• Stop snooze mode

• Back-light on

OUT/+ key

• Press shortly to toggle between MAX/MIN and current outdoor temperature/humidity
data

• Increase, change, toggle all values in manual set mode

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