Manual La Crosse MA10920 (page 2 of 2) (English)

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Indoor relative

humidity in

RH%

Indoor

temperatur

in ºC

pressure is increasing and the weather is expected to improve, but when indicator points

downwards, the air-pressure is dropping and the weather is expected to become worse.

Taking this into account, one can see how the weather has changed and is expected to

change. For example, if the indicator is pointing downwards together with cloud and sun

icons, then the last noticeable change in the weather was when it was sunny (the sun icon

only). Therefore, the next change in the weather will be cloud with rain icons since the

indicator is pointing downwards.

Note:

Once the weather tendency indicator has registered a change in air pressure, it will remain

permanently visualized on the LCD.

AIR PRESSURE HISTORY (ELECTRONIC BAROMETER WITH BAROMETRIC

PRESSURE TREND)

The right side of the second section of the LCD shows the air pressure history bar graph.

The bar graph indicates the air pressure history trend over the last 12 hours in 7 intervals: 0h,

-3h, -6h, -9h and -12h. The “0h” represents the current full hour air pressure recording. The

columns represent the “hPa” (0, ±1, ±3, ±5) at specific time. The “0” in the middle of this scale

is equal to the current pressure and each change (±1, ±3, ±5) represents how high or low in

“hPa“ the past pressure was compared to the current pressure.

If the bars are rising it means that the weather is getting better due to the increase of air

pressure. If the bars go down, it means the air pressure has dropped and the weather is

expected to get worse from the present time “0h“.

Note:

 For accurate barometric pressure trends, the weather station should operate at the

same altitude for recordings (i.e. it should not be moved from the ground to the second

floor of the house). When the unit is moved to a new location, discard readings for the

next 12 hours.

 The level of the pressure bar will be affected by the temperature change and it is for

reference only.

INDOOR TEMPERATURE/HUMIDITY DATA

The indoor temperature and humidity data are automatically updated and displayed on the

first section of the LCD.

OUTDOOR TEMPERATURE/HUMIDITY DATA

The last LCD section shows the outdoor temperature and humidity, and the reception

indicator.

If outdoor temperature/humidity data shows “--,-“, a manual search of the transmitter can be

done : press and hold the MODE key for 3 seconds. The station will then start to search for a

transmitter.

TOGGLING AND RESETTING THE TEMPERATURE MIN/MAX DATA

TO VIEW THE MIN/MAX TEMPERATURE DATA

Press the MIN/MAX key several times to view the MIN/MAX indoor and outdoor temperature

sequentially.

Note: the outdoor MIN/MAX temperature records will also display the recorded time and

date.

TO RESET TEMPERATURE MIN/MAX DATA

Press and hold MIN/MAX key for 3 seconds to reset all the indoor and outdoor temperature

to current temperatures.

COLORED DISPLAY

Single press MODE key to toggle back light colour mode as sequence: temperature colour

mode, single colour mode and rotate colour mode. Will display “C1” for temperature colour

mode, “C2” for single colour mode and “C3” for rotate colour mode

In temperature colour mode:

- Back light colour change depend on outdoor temperature

- Total 21 different back light colours, refer to below table

In single colour mode

- Total 22 back light colours, 21 colors from temperature color mode plus a white color

- Press the SET key to change the back light colour when “C2” is showing in the display. “col”

will be shown when the SET key is pressed. Continue to press the SET key to change

different back light colours when “col” is showing in the display

In rotate colour mode

- Press the MODE key to display “c3”

- The back light color will change softly and continuously in a 18s cycle

- The back light colour rotates red ► yellow ►green ►cyan ►blue ►

purple ► red ► …

endlessly

ABOUT THE THERMO-HYGRO TRANSMITTER

The range of the thermo-hygro transmitter may be affected by the

temperature. At cold temperatures the transmitting distance may be

decreased. Please bear this in mind when positioning the transmitters. Also the batteries may

be reduced in power for the thermo-hygro transmitter.

CHECKING FOR 868MHz RECEPTION

If the outdoor temperature and humidity data are not being received within three minutes after

setting up (or outdoor display always shows “- -.-” in the outdoor section of the weather

station during normal operation), please check the following points:

1. The distance of the weather station or transmitters should be at least 2 meters away

from any interfering sources such as computer monitors or TV sets.

2. Avoid placing the transmitters onto or in the immediate proximity of metal window

frames.

3. Using other electrical products such as headphones or speakers operating on the

868MHz-signal frequency may prevent correct signal transmission or reception.

Neighbors using electrical devices operating on the 868MHz-signal frequency can also

cause interference.

Note:

When the 868MHz signal is received correctly, do not re-open the battery cover of either the

transmitter or weather station, as the batteries may spring free from the contacts and force a

false reset. Should this happen accidentally then reset all units (see “Setting up” above)

otherwise transmission problems may occur.

The transmission range is around 100 meters from the thermo-hygro transmitter to the

weather station (in open space). However, this depends on the surrounding environment and

interference levels. If no reception is possible despite the observation of these factors, all

system units have to be reset (see “Setting up” above).

POSITIONING THE WEATHER STATION

The weather station must be place on a table.

POSITIONING THE THERMO-HYGRO TRANSMITTER

Mounting at a sheltered place. Avoid direct rain and sunshine.

The thermo-hygro transmitter can be placed onto any flat surface or wall mount using the

bracket which doubles as a stand or wall mount base.

To wall mount:

1. Secure the bracket onto a desired wall using the screws and plastic anchors.

2. Clip the transmitter onto the bracket.

Note:

Before permanently fixing the thermo-hygro to the wall base, pace all units in the desired

locations to check that the outdoor temperature and humidity readings are receivable. In

event that the signal is not received, relocate the thermo-hygro transmitter or the weather

station slightly as this may help the signal reception.

CARE AND MAINTENANCE

 Extreme temperatures, vibration and shock should be avoided as these may cause

damage to the unit and give inaccurate forecasts and readings.

 When cleaning the display and casings, use a soft damp cloth only. Do not use

solvents or scouring agents as they may mark the LCD and casings.

 Do not submerge the unit in water.

 Immediately remove all low powered batteries to avoid leakage and damage. Replace

only with new batteries of the recommended type.

 Do not make any repair attempts to the unit. Return them to their original point of

purchase for repair by a qualified engineer. Opening and tampering with the unit may

invalidate their guarantee.

 Do not expose the units to extreme and sudden temperature changes, this may lead to

rapid changes in forecasts and readings and thereby reduce their accuracy.

SPECIFICATIONS

Recommended operating temperature range : 5ºC to 40ºC

Temperature measuring range:

Indoor : -9.9ºC to +59.9ºC with 0.1ºC resolution

(“OF.L” displayed if outside this range)

Outdoor : -39.9ºC to +59.9ºC with 0.1ºC resolution

(“OF.L” displayed if outside this range, “---“ displayed if no transmitter signal)

Humidity measuring range:

Indoor humidity range : 1% to 99% with 1% resolution

(Display “- -“ if temperature is OL.F; display “19%“ if < 20% and

“96%” if > 95%)

Outdoor humidity range : 1% to 99% with 1% resolution (Display “- -“ if outside

temperature is OF.L; display 1% if < 1% and 99% if > 99%)

Data checking intervals:

Indoor temperature checking interval : every 16 seconds

Outdoor temperature reception : every 4 seconds

Transmission range : up to 100 meters (open space)

Power consumption (alkaline batteries recommended):

Weather station : AC adapter 230-240 VAC /

Output : 5 VDC/150mA

2 x AA, IEC, LR6 1.5V

Transmitter : 2 x AA, IEC, LR6, 1.5V

Dimensions (L x W x H):

Weather station : 147.6 x 115.2 x 31.9 mm

Transmitter : 38.2 x 21.2 x 128.3 mm

LIABILITY DISCLAIMER:

 The electrical and electronic wastes contain hazardous substances. Disposal of

electronic waste in wild country and/or in unauthorized grounds strongly damages the

environment.

 Please contact your local and/or regional authorities to retrieve the addresses of legal

dumping grounds with selective collection.

 All electronic instruments must from now on be recycled. User shall take an active part

in the reuse, recycling and recovery of the electrical and electronic waste.

 The unrestricted disposal of electronic waste may do harm on public health and the

quality of environment.

 As stated on the gift box and labeled on the product, reading the “User manual” is

highly recommended for the benefit of the user. This product must however not be

thrown in general rubbish collection points.

 The manufacturer and supplier cannot accept any responsibility for any incorrect

readings and any consequences that occur should an inaccurate reading take place.

 This product is designed for use in the home only as indication of the temperature.

 This product is not to be used for medical purposes or for public information.

 The specifications of this product may change without prior notice.

 This product is not a toy. Keep out of the reach of children.

 No part of this manual may be reproduced without written authorization of the

manufacturer.

R&TTE Directive 2014/53/EU

Summary of the Declaration of Conformity: We hereby declare that this wireless transmission device

does comply with the essential requirements of R&TTE Directive 2014/53/EU.

Conformity declaration can be seen :

http://www.lacrossetechnology.fr/P-18-A1-WSTX29TH-IT+.html

Air pressure trend over the

last 12 hours

Outdoor humidity

in RH%

Outdoor

reception

icon

Outdoor

temperature

in 

Recorded

time of the

outdoor

MIN/MAX

records

Recorded

date of the

outdoor

MIN/MAX

records

MAX outdoor

temperature

MAX icon (outdoor

temperature)

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La Crosse MA10920 Manual

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