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WEATHER STA TION M A 10920
Instruction M anual
INTRODUC TION
Congratulations on p urchasing this weather stati on as an example of innovative des ign and
quality piece of engineering. Provi ding time, date, i ndoor and outdoor temperature, i ndoor and
outdoor relative humidi ty, and air pressure history i nformation, this unit wil l never keep you
guessing on current a nd future weather conditi ons. Operation of this product is si mple and
straightforward. By reading t his operating manual , the user will recei ve a better understanding
of the weather station toget her with the opti mum benefit of all its feat ures.
FEATURES
The Weather S tation
DCF Radio controll ed time with manual setti ng option
Time recepti on ON/OFF setting
Weekday, date a nd month display (year only i n setting mode)
Time zone optio n (-12h to +12h)
Alarm setti ng
Temperature display i n degree Celsius (°C)
Indoor temperature displ ay with MIN/MAX recordi ngs
Permanent outdoor temperat ure MIN/MAX di splay with recordings with tim e and date
received
All MIN/MAX recordi ngs can be reset
Indoor and outdoor humidity display in RH%
Weather forecast wi th weather tendency indicator
Relative ai r pressure history for the past 12 hours
Low battery indicator for o utdoor sensor
Table standing
Thermo-H ygro Transmitter
Remote transmission of o utdoor temperature and humidity to weather station by
868MHz
Wall mounting case
Mounting at a shelter ed place. Avoid di rect rain and sunshine
SETTING UP
Note: This weather station re ceives only one outdoor tran smitter.
1. First, insert the batteri es in the transmitter (see “How to install and repla ce batteries
in the thermo-hygro trans mitter” above).
2. Within 30 seconds of poweri ng up the transmi tter, insert batteries and AC adapter i n
the weather statio n (see “How to install and replace b atteries in the weather
station” above). O nce the batteries and AC adapter are i n place, all segments of the
LCD will li ght u p bri efly and a short signal tone will sound. Then the indoor tempe rature,
humidity and the time as 0:00 will be displayed. If t hese informations are not displayed
on the LCD after 60 seco nds, remove the batteri es and wait for at least 60 seconds
before reinserting t hem. Once the indoor data i s displayed user may proceed to the
next step.
3. After the batteries are i nserted, the weather station will start recei ving data signal from
the transmitter. The o utdoor temperature and humi dity data should then be displ ayed
on the weather station. If t his does not happen after 2 mi nutes, the batteri es will need
to be removed from bot h units and reset from step 1.
4. In order to ensure s uccessful 868 MHz transmissi on, the distance betwee n the weather
station and the transmitte r should be within 100 meters (se e notes on “Positioning ”
and “868 MHz Reception ”).
5. Once the outdoor data rec eption test period i s completed, the DCF tower i con in the
clock displ ay will start flashing in the upper l eft corner. This indicates that t he clock has
detected that there is a r adio signal present and i s trying to receive it. W hen the time
code is received, the DCF to wer becomes perma nently lit and the time will be
displayed.
TO INSTAL L AND REPLACE B ATTERIE S IN THE WE ATHER STATION
The weather statio n uses 2 x AA, IEC LR6, 1.5V
batteries AND the AC adapt er. To install and repl ace
the batteries, please follow the steps below:
1. Insert finger or other sol id object in the space at
the bottom center of t he battery compartment and
lift up to remove the cover.
2. Insert batteries observi ng the correct polari ty (see
marking).
3. Replace compartment cover.
TO INSTAL L AND REPLACE B ATTERIE S IN THE THERM O-HYGRO
TRANSMITTER
The outdoor thermo-hygro tra nsmitter uses 2 x AA, IEC LR 6, 1.5V batteri es.
To install and repl ace the batteries, please foll ow the steps below:
1. Remove the battery cover b y pushing the battery cover upwards with
your thumb.
2. Insert the batteries, observi ng the correct pol arity (see battery
compartment marking).
3. Replace the battery cover o n the unit.
Note:
In the event of cha nging batteries in any of the units, al l units need to be reset by following
the setting up proced ures. This is due to a random sec urity code assig ned by the transmitter
at start-up. This code m ust be received and stored by t he weather statio n in the first 3
minutes of power being s upplied to the transmitter.
ADD DEVICE TO MOBILE -ALERTS SYSTEM
(MOBILE ALERTS gateway needed, sold separatel y)
Open the app, dashboard is di splayed. Tap "Add new sensor" and scan the QR cod e on the
back of the MA10920. T hen set a name for the se nsor. To set a name, select the t ransmitter
and then tap on t he left area of the pencil icon i n the upper right.
Note: only the data for indo or, outdoor temperat ure and indoor, outdoor humidi ty are
transmitted to Mobi le-Alerts.
DCF RADIO CO NTROLLED TIM E
The time base for the radi o controlled time i s a Cesium Atomic Cl ock operated by the
Physikalisch Tec hnische Bundesanstalt Braunsc hweig which has a time deviati on of less than
one second in one milli on years. The time i s coded and transmitted from Mainfli ngen near
Frankfurt via frequency sig nal DCF-77 (77.5 kH z) and has a transmitting range of
approximately 1,500 km. Your radio-controll ed weather station receives this si gnal and
converts it to show t he precise time in summer or wi ntertime.
The quality of the reception depends greatl y on the geographic location. In normal cases,
there should be no reception problems within a 1,500 km r adius of Frankfurt.
DCF reception is do ne twice daily at 02:00 and 03:00 am. I f the recepti on is not successful at
03:00 am, then the next reception takes place t he next hour and so on until 06:00am, or until
the reception is s uccessful. If the reception is not s uccessful at 06:00 am, t hen the next
attempt will take place the next day at 02:00 am.
If the tower icon flas hes, but does not set the time or t he DCF tower does not appear at all,
then please take note of the following:
Recommended distance to a ny interfering sources l ike computer monitors or TV sets is
a minimum of 1.5 - 2 meters.
Within ferro-concrete rooms ( basements, superstructures), t he received signal i s
naturall y weakened. In extreme cases, please pl ace the unit close to a window and/ or
point its front or back toward s the Frankfurt transmi tter.
During nighttime, t he atmospheric disturbances are usually less severe and recepti on is
possible in most cases. A singl e daily recepti on is adequate to keep the accuracy
deviation below 1 second.
FUNCTION KE YS:
Weather station:
The weather statio n has 5 easy to use functi on keys:
SET / DISPLAY / SELE CT – key
- Single press to toggl e time/indoor humidity di splay, date/indoor humidity di splay and
time/second display
- Hold 3s to enter set mode
- Single press SET key to c hange set items
- set items sequence: ti me zone, RCC ON/OFF, year , month, day, hour, mi nute, master reset,
quit set mode
- exit alarm set mode
- exit min/max displ ay mode
- Stop learning tra nsmitter
- Stop RCC recepti on
MIN/MAX/(RESET) – ke y
- Increase set items at set mo de or alarm set mode
- Auto increase set item s at set mode or alarm set mode w hen press and hold it
- Switches display i n sequence max indoor temperat ure / min indoor temperature / m ax
outdoor temperature wi th time stamp / max outdoor tempe rature with date stamp / min
outdoor temperature wi th time stamp / min outdoor temper ature with date stamp. The
min/max display w ill be timeout for 15s and back to normal display
- Hold 3s to cl ear all maximum minimum temperature
- Stop learning tra nsmitter
- Stop RCC recepti on
ALM – key
- Single press to di splay pre-set alarm time for 15s
- Single press to toggl e time alarm on/off when pre-set al arm time is shown
- Holds 3 s to enter alar m set mode when pre-set al arm time is shown
- Single press ALM key to c hange set items
- Set items seque nce: alarm hour, alarm minute, quit al arm set mode
- Single press to c hange Alarm display from cl ock display or Date displ ay
- Toggle alarm on/off d uring Alarm display
- exit min/max displ ay mode
- Stop learning tra nsmitter
- Stop RCC recepti on
DIM – key
- Adjust back li ght brightness in sequence, Stro ng, Middle and Weak. W ill display “d1” for
Strong, “d2” for middle and “ d3” for weak
- Stop learning tra nsmitter
- Stop RCC recepti on
MODE – key
- Single press to toggl e back light colour mode as seq uence: temperature colour mod e, single
colour mode and rotate colo ur mode (22 col ours).
- Manual search of o utdoor sensor
LCD SCREEN
The LCD screen is spli t into 3 sections displ aying the information for time/calend ar, indoor
data, weather forecast and air pressure history, a nd outdoor data.
* W hen the signal is successfully recei ved by the weather station, the o utdoor transmission
icon will be switched on. (If not successful, the ico n will not be shown on LCD). T he user can
then easily see w hether the last reception was s uccessful (icon on) or not (i con off).
MANUAL SET TINGS
The foll owing settings can be changed when pressi ng and holding the SET key:
Time zone setting
Time recepti on ON/OFF setting
Manual setting : year, mont h, date, time and mi nutes
Reset of the weat her station
TIME ZONE S ETTING:
The time zone default of the weather station is “0”. T o set a different time zone:
1. The current time zone value starts flashing.
2. Use the MIN/MAX key to set t he time zone. The range ru ns from -12h to +12h hours in
1-hour intervals.
3. Confirm with the SE T key and enter the Time Recept ion ON/OFF Setting .
TIME RECEPTI ON ON/OFF SE TTING
In area where reception of t he DCF-77 time si gnal is not possible, the DCF-77 tim e reception
function can be turned OFF. The clock will then work as a normal quartz clock. (Default
setting is ON).
1. “On” will start flashing on the LCD.
2. Use the MIN/MAX key to t urn OFF the time recepti on function.
3. Confirm with the SE T key and enter the Calend ar Setting .
Note:
If the Time Recepti on function is turned OFF ma nually, the clock will not attempt any
reception of the DCF ti me as long as the Ti me Reception OFF function is acti vated.
The time receptio n “ “ and the “DCF” icons will not be displ ayed on the LCD.
CALENDAR SE TTING
1. The year digits will start flashing.
2. Use the MIN/MAX key to set t he year. Keep holdi ng the key allows the value to
advance faster.
3. Press the SET key to co nfirm and enter the mo nth setting mode.
4. The month digit w ill be flashing. Use the MIN/M AX key to set the month. Keep holding
the key allows t he value to advance faster.
5. Press the SET key to e nter date setting.
6. The date digit wil l be flashing. Use the MIN/M AX key to set the date. Keep holding the
key all ows the value to advance faster.
7. Confirm with the SET key a nd enter Manual Time sett ing .
Note:
The weekday is a utomatically displayed above t he time in short form (from Monday t o
Sunday): MO / TU / WE / TH / FR / SA / SU .
MANUAL TIME S ETTING:
In case the weather station cannot detect the DCF-si gnal (for example d ue to disturbances,
transmitting dist ance, etc.), the time can be ma nually set. The clock will then work as a
normal quartz clock.
1. The hour digit will start flashing.
2. Use the MIN/MAX key to set t he hour. Keep hol ding the key all ows the digit to advance
faster.
3. Press again the SE T key to set the minute s. The minute digits start fl ashing.
4. Use the MIN/MAX key to set t he minutes. Keep holding the key all ows the digit to
advance faster
5. Confirm with the SE T key and enter the Reset set ting .
Note:
The unit will still try and receive the signal despi te it being manually set. W hen it does
receive the signal, i t will change the manuall y set time into the received time. During
reception attempts t he DCF tower icon will fl ash. If reception has been unsuccessful,
then the DCF tower i con will not appear but recepti on will still be attempted the
following day.
The time receptio n “ “ and the “DCF” icons will not be displ ayed on the LCD after
manual ti me setting.
RESET SETTIN G
You will be able to make a reset of the weather stati on at the very end of t he setttings :
- Once rSt is di splayed, hold the MIN/MAX key until all segments will be display
The station will then go back to time displ ay. All previous settings are suppressed.
TO EXIT THE MANUAL SET TING MODE
To exit the manual setting mode anytime during t he manual setting, press t he ALM key. The
mode will return to normal time display.
ALARM SETTIN G
To set the alarm:
1. Press and hold ALM key for 3 seconds until the alarm time shown.
2. The hour digit will be flashing. Use the MI N/MAX key to adjust the hour. Keep holding
the key allows t he value to advance faster.
3. Use the ALM key agai n, and the minute digi ts will be flashing. Press MIN/M AX key to
set the minute. Keep holding the key all ows th e value to advance faster.
4. Press the ALM key to co nfirm the setting.
Note:
To activate/deactivate t he alarm function, press t he ALM key once. The di splay of the alarm
icon represents that t he alarm is "ON".
The duration of al arm sounding is 2 minutes. Press a ny key will stop the alarm sound.
WEATHER FORECASTING IC ONS:
The weather ico ns in the second section of LCD ca n be displayed in any of the fol lowing
combinations:
For every sudden or signifi cant change in the air press ure, the weather i cons will update
accordingly to represent t he change in weather. If t he icons do not change, t hen it means
either the air pressure has not changed or the cha nge has been too slow for the weat her
station to register. However, i f the icon displ ayed is a sun or raining clo ud, there will be no
change of icon if t he weather gets any better (wi th sunny icon) or worse (wi th rainy icon) since
the icons are already at t heir extremes.
The icons displ ayed forecasts the weather i n terms of getting better or worse and not
necessaril y sunny or rainy as each icon indi cates. For example, if the current weath er is
cloudy and the rainy icon i s displayed, i t does not mean that the product is faulty because it i s
not raining. It simpl y means that the air pressure has dropped and the weather is expected to
get worse but not necessarily rainy.
Note:
After setting up, readi ngs for weather forecasts s hould be disregarded for the next 12-24
hours. This will allow sufficient time for the w eather station to colle ct air pressure data at a
constant altitude and t herefore result in a more acc urate forecast.
Common to weather forecasti ng, absolute accuracy ca nnot be guaranteed. The weat her
forecasting feature is est imated to have an accuracy l evel of about 75% due to t he varying
areas the weather station has been designed for use. In areas that experience sudde n
changes in weather (for e xample from sunny to rai n), the weather statio n will be more
accurate compared to use in areas where the weat her is stagnant most of t he time (for
example mostly sunny).
If the weather stati on is moved to another locati on significantly higher or l ower than its initial
standing point (for example from the ground fl oor to the upper floors of a house), di scard the
weather forecast for the next 12-24 hours. By doi ng this, the weather station wi ll not mistake
the new location as being a possible change i n air-pressure when really i t is due to the slight
change of alti tude.
WEATHER TENDENCY INDIC ATOR
The weather tende ncy indicators (located on the l eft side of the weather icons) are w orking
together with the weat her icons. When the i ndicator points upwards, it mea ns that the air-
Alarm time (flashing)
Sunny
Cloudy with sunn y intervals
Rainy
Alarm indicator (ON)
Flashing
Hour flashing
Minutes flashing
Flashing
Instant Transmission+» is t he up and coming state
transmission technolog y, exclusively design ed and developed by L A CROSSE
TECHNOLOGY.
“IT +” offers you an i mmediate update of all your outdoor data measured fro m the
transmitters: follow your climatic variations in real-ti me!
Indoor humidity
display in RH%
(weather station)
forecast icon
Air pressure history
bar graph
Outdoor data signal
reception indicator *
Low battery indicator
(outdoor transmitter)
MIN/MAX outdoor
temperature display
Weekday
Time
Alarm icon
Outdoor humidity
display in RH%
Weekday
Year
Date. Month.