La Crosse Technology WS-2310-RX Weather Station - Receiver User Manual USA WS 2310 Main book
La Crosse Technology Ltd. Weather Station - Receiver USA WS 2310 Main book
users manual

Operation Manual 
Professional Remote Weather Station 
Table of Contents 
Page 
1. Introduction………………………………………………............. 2 
2. Intended use………………………………………… .................. 2 
Weather Station……………..................................................... 2 
System requirements for PC use…………. ............................. 3 
Features of the base station…………...................................... 3 
Features of the thermo-hygro sensor…………........................ 4 
Features of the wind sensor…………...................................... 4 
Features of the rain sensor...................................................... 4 
3. Safety Notes ............................................................................ 4 
4. Packaged contents .................................................................. 5 
5. Setting up................................................................................. 6 
6.  Operation using cable connection or wireless 433MHz .......... 8 
7. LCD overview ........................................................................ 10 
8. Function test .......................................................................... 11 
9.   Mounting ................................................................................ 11 
10.  Resetting & factory settings................................................... 14 
11.  Function description............................................................... 16 
12. Operation keys....................................................................... 19 
13. Basic programming modes.................................................... 21 
14. MIN/MAX programming modes ............................................. 22 
15. Alarm programming modes ................................................... 23 
16. Auto-memory for stored values ............................................. 31 
17. Accessories: extensions cables............................................. 32 
18. Changing batteries................................................................. 33 
19.  Problems and interference with operation............................. 34 
20.  Transmission range ............................................................... 35 
21.  Cleaning and maintenance.................................................... 35 
22.  Specifications......................................................................... 36 
23. Warranty Information ............................................................. 38 
This Operation Manual is part of this product and should be kept in a 
safe place for future reference. It contains important notes on setup and 
operation. 
Please see www.heavyweather.info for a complete IM, FAQ and 
downloads of the most current software. 
1. Introduction 
Thank you for purchasing this Professional Remote Weather Station. 
Designed for everyday use, the weather station will prove to be an 
asset of great value for your personal use in the home or office. 
Please read this instruction manual thoroughly to fully understand the 
correct operation of your weather station and benefit from it’s unique 
features. 
2. Intended Use  
Weather Station 
The base station measures the indoor environment of its surrounding 
area and receives weather data from the following three outdoor sen-
sors: 
1) Thermo-Hygro Sensor 
2) Wind Sensor 
3) Rain Sensor 
The received data is continuously updated to bring you the latest 
weather information on the base station’s LCD.  The outdoor thermo-
hygro sensor is the main data communication unit since both the wind 
and rain sensors are connected to the thermo-hygro sensor for oper-
ating power and rely on it to communicate to the base station.  
Weather data sent from the thermo-hygro sensor can be done by 
wireless 433MHz transmission (up to 100ft in open space) or by cable 
connection. 
Using the enclosed 6.5ft computer cable and CD-ROM, you can in-
stall the Heavy Weather software to your PC and access the latest 
weather information from your PC and upload up to 175 sets of re-
corded weather data received by the base station.  Recorded data 
can be used to generate statistics and charts onto your spreadsheets 
(175 sets of data is stored in the base even if the PC is switched 
OFF).  The software itself does not set any limits as to how many data 
sets can be transferred to PC. 
This weather station is designed to work easily with your PC, simply 
connect and disconnect the PC cable at any time. 

System Requirements for PC use: 
The minimum system requirement for use of this “Heavy Weather” 
software is:   
Operating system: Windows 98 or above 
Processor: Pentium 166 MHz or above 
RAM: 32MB of RAM or above 
Hard disk: 20MB free space 
CD-ROM drive 
For full details on operation and installation of the “Heavy Weather” 
software refer to the PC manual in PDF format on the CD-ROM. 
Features of the base station: 
•  Receives and displays the WWVB radio controlled time and date  
•  Display of extensive weather data, in all cases with programmable 
alarm functions for certain weather conditions as well as records of 
all minimum and maximum values along with time and date of their 
recordings 
•  Indoor and outdoor temperature displays in degrees Fahrenheit or 
Celsius (user selectable) 
•  Indoor and outdoor relative humidity displays 
•  Air pressure reading in inHg or hPa, absolute or relative (user select-
able) 
•  Detailed display of rainfall data in 1 hour, 24 hours, total since last 
reset (user selectable in mm or inch) 
•  Wind speed in mph, km/h, m/s, knots or Beaufort (user selectable) 
•  Wind direction display with LCD compass as well as numerical (e.g. 
225°) and abbreviated characters (e.g. SW) 
•  Wind chill temperature display 
•  Dew point temperature display 
•  Weather forecast display by weather icons (sunny, cloudy, rainy) 
•  Weather tendency indicator 
• Storm warning alarm 
•  LED back light 
•  Simultaneous display of all weather data with individual settings by 
the user 
•  COM port for easy connection to your PC 
•  All the weather data from the base station and up to 175 sets of 
weather history data with user adjustable measuring intervals can be 
recorded and uploaded to your PC 
Features of the Thermo-Hygro Sensor 
The thermo-hygro sensor measures the outdoor temperature and relative 
humidity.  It also collects the readings from the rain and wind sensors 
before transmitting the data to the base station by wireless 433MHz or by 
the 32ft cable included in this set. 
Features of Wind sensor 
The wind sensor measures wind speed and wind direction and sends the 
data to thermo-hygro sensor, which in turn transmits the data to the base 
station.  Operating power is taken from the thermo-hygro sensor using a 
32ft cable connection. 
Features of Rain sensor 
The rain sensor measures the rainfall and sends the data to thermo-hygro 
sensor, which in turn transmits the data to the base station.  Operating 
power is taken from the thermo-hygro sensor by a 32ft cable connection. 
3. Safety Notes 
•  Damage caused by failure to comply with this instruction manual will 
invalidate any guarantee! The manufacturer and supplier will not be 
held liable for damages due to failure to comply with this instruction 
manual or from data inaccuracies that may occur with this product! 
•  In case of harm or damage to a person or property caused by im-
proper handling or failure to comply with this instruction manual, the 
manufacturer and supplier cannot be held liable.   
•  For reasons of safety and operation, alterations to this device are 
strictly prohibited. 
•  To operate the weather station, use only supplied adaptor and batter-
ies of the recommended type. 
•  Do not leave discharged batteries in the device as these may corrode 
and release chemicals that may damage the unit. 
•  Inserting batteries in an incorrect polarity will cause damage to this 
product. 
•  This product is not a toy kept out of the reach of children. 
•  Do not dispose of new or used batteries in a fire as they may explo-
sion or release dangerous chemicals. 
•  This product is not to be used for medical purposes or for public 
information. 
•  Any modification or alteration to this product is strictly prohibited 
without the manufacturer’s authorization and may prohibit the user’s 
further use of this product. 

4. Packaged Contents 
Before setting up, carefully unpack the contents onto a table or flat 
surface and check that the following are complete: 
Item: Consisting of: Fittings:  Illustration: 
Base 
Station 
• Main unit 
•  AD/DC 120V power 
Adaptor - optional use 
(included) 
Thermo-
Hygro 
Sensor 
• Main unit 
• Rain protection 
cover 
•  32ft cable - optional 
connection to the 
base station (in-
cluded) 
• Wall mounting screws 
• Plastic anchors for 
screws 
Wind 
Sensor 
• Main unit with 
wind vane 
• 32ft cable 
(already at-
tached to the 
main unit) 
• Mast holder  
•  2 x U-bolts for mast 
holder 
• 4 x Washers 
•  4 x Nuts 
•  1 x screw (to fix main 
unit to the mast holder 
Rain 
Sensor 
• Main unit (base 
and funnel) 
• 32ft cable 
(already at-
tached to the 
main unit) 
Heavy 
weather 
PC 
soft-
ware 
CD-Rom format 
(English and 
German lan-
guage) 
•  6.5ft PC cable for PC 
connection - optional 
use (included) 
5. Setting up 
First, choose to use the adaptor (included in this set) or batter-
ies for operation.  Both these methods allow for operation us-
ing wireless 433MHz transmission or cable connection be-
tween the base station and the sensors and setting up for both 
methods is as follows: 
Base Station: 
Battery compartment
Socket for 
Thermo-Hygro 
Sensor 
Socket for 
Adaptor 
PC COM 
Port 

Setting up using batteries: 
Important:  To avoid operating problems, please take note of bat-
tery polarity if inserting any batteries 
1)  Pull away the rain cover of the thermo-hygro sensor to reveal the 
three sockets (for the wind sensor, rain sensor and the base sta-
tion) 
2)  Connect the attached cables of wind and rain sensors to the 
corresponding sockets of the thermo-hygro sensor by clicking 
them into place 
3)  Open the battery cover of the thermo-hygro sensor located below 
the three sockets and insert 2 x AA, IEC LR6, 1.5V batteries and 
close the cover 
4)  Open the base station’s battery cover located at the back of the 
unit and insert 3 x AA, IEC LR6, 1.5V batteries into the battery 
compartment and close the battery cover 
Setting up using the AC adaptor: 
1)  Power up all the sensors as described in setting up using batter-
ies above 
2)  Using the AC adaptor (included), plug it into the mains outlet and 
power up the base station by inserting the adaptor jack into the 
DC 6.0V socket located on the side of the base station 
Every time the thermo-hygro sensor is powered up (for example after 
a change of batteries), a random security code is transmitted and this 
code must be synchronized with the base station to receive weather 
data. 
When the base station is powered up, a short beep will sound and all 
LCD segments will light up for about 5 seconds before it enters into a 
15 minute learning mode to learn the sensors security code.  After the 
learning mode (or by pressing the MIN/MAX key at anytime), the base 
station will start the WWVB radio controlled time reception. 
Note for WWVB Radio Controlled Time: 
The time and date display is based on the signal provided by the 
highly accurate government operated atomic clock in Ft. Collins, 
Colorado. This radio-controlled clock does not only provide for the 
weather station’s time and date display but also functions as the time 
and date source for all of this weather station’s memory and history 
values using time and date information. 
LCD backlight: 
When using the power adaptor, the LCD backlight is switched on 
continuously.  Under battery operation, the LCD backlight is switched 
on for 15 seconds intervals when any key is pressed. 
6.  Operation using cable connection or wireless 433MHz 
Cable Connection: 
Using this method of operation will provide interference free transfer 
of the weather data from the sensors to the base station.  The data 
sending interval from the sensors to the base station will also be more 
frequent compared to using 433MHz transmission and will result in 
higher power consumption.  Therefore batteries will have a shorter life 
span for cable connection compared to using 433MHz. 
Sensor sockets
Battery  
Compartment  Battery Cove
r
Thermo-Hygro Senso
r
Sensor sockets 

1.  Low battery indicator 
2.  WWVB radio controlled time icon 
3. Date display 
4.  Time zone display 
5.  Date, seconds, alarm time and time 
zone 
6. Alarm icon 
7.  Weather forecast icons 
8.  Weather tendency indicator 
9.  Pressure alarm display 
10.  hPa/inHg air pressure unit 
11.  Pressure units (relative or absolute) 
12.  433MHz reception icon 
13. Rainfall display 
14.  Indoor, outdoor, humidity, dew point, 
wind chill, rainfall alarm icon 
15.  24h, 1h or total hour display 
16.  Humidity display as RH% 
17.  Rainfall units (inch or mm) 
18.  Temperature display units (ºC or ºF) 
19. Outdoor temperature/humidity display 
20.  Indoor temperature/humidity display 
21.  Dew point temperature display 
22.  Wind chill temperature display 
23.  Wind alarm icon 
24.  Wind information for Min/Max speed 
and wind speed low, high, direction 
alarm 
25.  Wind direction and speed (m/s, knots, 
Beaufort, km/h or mph) display  
26.  Alarm buzzer ON/OFF icon 
27. General alarm icon 
To operate using cable connection, simply use the enclosed 32ft 
cable and connect the thermo-hygro sensor to the base station.  Once 
the connection is detected, the base station will automatically con-
tinue reading the data from the sensor. 
The user may at any time switch from cable connection to using 
433MHz (or vice versa) by simply disconnecting (or connecting) the 
cable from the base station to the sensor.  When the base station 
detects no cable connection to the sensors, the base station will 
automatically change to using 433 MHz for reception of the weather 
data from the sensors. 
The data receiving intervals are as follows: 
-  Using cable connection data is updated every 8 seconds. 
-  Using wireless 433 MHz data is updated from 16 to 128 second 
intervals depending on wind speed and rain activity. 
Using the AC adaptor to operate the base station will also supply 
power to the sensor if the cable is connected to it.  Batteries used for 
433MHz transmission may be left in the sensor when using cable 
connection for power back up in case of AC power failure.  A loss of 
power would desynchronize the base station and the sensor and no 
weather data will be received.  To Synchronize the units so that the 
weather data can be received, press and hold the PLUS (+) key for 2 
seconds.  However in general, batteries that will not be used for long 
periods should be removed to avoid leakage.   
Wireless 433MHz transmission: 
Using 433MHz wireless transmission of weather data from the sensor 
to the base station will provide users greater freedom as to where 
units can be positioned without the need to be restricted by cable. 
Note: 
If no outdoor weather data is displayed or the signal to the sensors is 
lost during setting up, mounting, changing of batteries to the sensor or 
plugging or unplugging cables, simply press and hold the PLUS (+) 
key for 2 seconds and a short beep will sound to synchronize the 
base station to sensors.  Without being synchronized, weather data 
will not be received. 
7. LCD Overview 
The following illustration shows the full segments of the LCD for 
description purposes only and will not appear like this during 
normal operation and use. 
16
1  2  3  4 
5 
6 
7 
8 
9 
10
13 
12 
14
15 
17
23
11
19
20
22
21
18 
24
25
26  27 

8. Function test: 
Once the weather station is powered up, perform a function test by 
checking that the weather data is received.  To do this, press the 
DISPLAY, PRESSURE or WIND keys to toggle through the relevant 
LCD sections: 
1)  Indoor temperature and humidity 
2)  Outdoor temperature and humidity 
3) Outdoor wind chill 
4) Dew point 
5)  Rainfall 24 hour 
6) Rainfall 1hour 
7) Rainfall Total 
8)  Relative and absolute pressure 
9)  Wind speed, wind direction and wind direction in degrees 
If any readings cannot be received from the sensors, lines (- - -) will 
be displayed in the respective weather sections of the LCD.  In this 
case, check that all cables are correctly inserted into the correct 
sockets and/or check the batteries in the outdoor thermo-hygro sen-
sor and press and hold the PLUS (+) key for 2 seconds and a short 
beep will sound to synchronize the base station to the sensors other-
wise no weather data will be received.. 
Some weather readings such as wind speed and direction may not 
appear immediately on the LCD if the wind-fan or vane of the wind 
sensor is moved.  This is due to the set reading time intervals for the 
wind readings.  However the current wind speed or direction will be 
displayed once the time reading interval is reached.  For rainfall, the 
interval readings may take up to 2 minutes before the data is dis-
played on the LCD. 
9. Mounting 
Important Note 
Prior to drilling mounting holes and permanently affixing any of the 
units, please ensure the following points are considered: 
•  Cable lengths of the units meet with your distance requirements 
at the point of fixing 
•  Signals from the sensors can be received by the base station at 
points of mounting 
•  Radio controlled time signal can be received at the point of 
mounting 
•  
NOTE: The WWVB receiver is located in the base station. 
Base Station 
With two foldable legs at the back of the unit, the base station can be 
placed onto any flat surface or wall mounted at the desired location by 
the hanging holes also at the back of the unit. It is important to check 
that the 433MHz (if using wireless connection) and the WWVB radio 
controlled time signal can be received before permanently mounting 
any of the units. Should the base station not display the 433MHz 
weather data from the sensors or the radio controlled time from the 
desired location, then relocate the units. Once the signals are re-
ceived, the system can be affixed. Also if you have selected to use 
cable connection, ensure that distances can reach all desired loca-
tions before affixing any unit permanently 
NOTE: For reception of WWVB time/date signal, do not mount the 
base station closer than 5 feet from a computer, florescent lights or 
other electrical appliances.  Do not mount the base station on a wall 
that has metal heat/AC ductwork in the wall behind the base station.  
For best WWVB reception place the base station near a window fac-
ing Colorado.  WWVB reception will be obtained easiest in the night-
time hours when the WWVB signal is strongest. 
Mounting the Wind Sensor onto a mast  
Firstly, check that the wind-fan and the wind-vane can rotate freely 
before fixing the unit.  For correct and accurate readings it is impor-
tant to mount the sensor so that the front (marked E) is pointing in 
East-West direction.  The wind sensor should now be mounted using 
the screw provided onto a mast to allow the wind to travel around the 
Wind-fan 
Wind-vane 
Mast

sensor unhindered from all directions (ideal mast size should be from 
Ø0.63” – Ø1.3”).  
Once the wind sensor is fixed onto the mast, connect the cable to the 
corresponding thermo-hygro sensor socket so that operating power 
supply can be received and data can be transmitted to the base sta-
tion. 
Mounting the Rain Sensor 
For accurate results, the rain sensor should be securely mounted 
onto a horizontal surface about 2-3ft above the ground and in an open 
area away from trees or other coverings where rainfall may be re-
duced causing inaccurate readings. 
When securing into place, check that rain excess will not collect and 
store at the base of the unit but can flow out between the base and 
the mounting surface (test by pouring clean water). 
After mounting the rain sensor, connect the cable to the thermo-hygro 
sensor at the corresponding socket so power supply can be received 
and data be transmitted to the base station 
The rain sensor is now operable. For testing purposes, very slowly 
pour a small amount of clean water into the rain sensor funnel. The 
water will act as rainfall and will be received and displayed at the 
base station after about 2 minutes delay i.e. when the reading interval 
is reached (to clear this testing data on the base station, refer to the 
section “MIN/MAX Mode” below). 
Mounting the thermo-hygro Sensor 
An ideal mounting place for the thermo-hygro sensor would be the 
outer wall beneath the extension of a roof, as this will protect the 
sensor from direct sunlight and other extreme weather conditions. 
To wall mount, use the 2 screws to affix the wall bracket to the de-
sired wall, plug in the thermo-hygro sensor to the bracket and secure 
both parts by the use of the supplied screw and ensure that the ca-
bles from the wind and rain sensors are correctly plugged in other-
wise data transmission errors could occur. 
NOTE: For best 433 MHz reception mount the thermo-hygro sen-
sor on an outside wall near the location of the base station. 
10.  Resetting & factory settings: 
As previously mentioned, in the event of a power reset to the sensor 
(for example a change of batteries), the base station has to synchro-
nize to the sensor again otherwise no weather data will be received.  
To do this, simply press and hold the PLUS (+) key for 2 seconds and 
a short beep will sound to synchronize the base station to the sensor.  
When the units are synchronized, the data will be received again and 
the base station will return to normal operation mode.  
Do not remove batteries or unplug the AC adaptor of the base station 
otherwise all 175 sets of recorded weather history data for transfer-
ring to the PC will be lost (for full details of PC use, please see PC 
user manual in the enclosed Heavy Weather CD-ROM).  
Base portion 
Funnel portion 
Rain Cover
Wall Bracket 
Main Unit 

However if you wish to make a full reset of the base station and return 
to the original factory settings, simultaneously press and hold the 
PRESSURE and WIND keys for about 5 seconds.  The base station 
will beep once and the entire LCD will light up for 5 seconds and go 
back to the original factory settings.  This process with clear all previ-
ous user defined values and all weather history recordings. 
Factory default settings: 
The following table shows the factory default values of the weather 
station: 
Matter: Default Setting: 
Time 0:00 
Date 01.01.2001 
Time zone  -5 ET 
Alarm time  12:00 am 
Relative air pressure  29.91 inHg 
Weather-picture threshold  0.09 inHg 
LCD contrast level  5 (1-8 levels) 
Rainfall per impulse  0.0204 inches 
Storm alarm  0.09 inHg 
Relative air pressure 
alarm 
28.34 inHg 
(low) 
30.71 inHg 
(high) 
Indoor temperature alarm  50ºF (low)  86ºF (high) 
Outdoor temperature 
alarm 
32ºF (low)  104ºF (high) 
Indoor humidity alarm  35%RH (low)  65%RH (high) 
Outdoor humidity alarm  45%RH (low)  70%RH (high) 
Wind chill alarm  50ºF (low)  86ºF (high) 
Dew point alarm  32ºF (low)  68ºC (high) 
Rainfall 24h alarm  1.96 inches 
Rainfall 1h alarm  0.03 inches 
Wind Speed  1.0 mph (low)  62 mph (high) 
Wind direction alarm  None set 
Note: 
All alarm default values are deactivated at the start up and any alarm 
must be activated by the user otherwise it will not sound.  
11.  Function Description of the Weather Station 
After setting up, the following data will be displayed in different sec-
tions on the LCD. If this is not the case please observe the notes on 
“Interferences” below. 
Time & Date (LCD Section 1) 
If the WWVB icon (icon 2) is ON and not flashing, it means that the 
WWVB radio-controlled time and date are has been received. Press 
the PLUS (+) key to change the format of date display between 
date/month/year, weekday/date/month, seconds, alarm set time and 
time zone. 
LCD Section 1: 
Time, date, seconds, time zone, 
weather forecasting icons with 
tendency arrows, air pressure, 
and respective alarms sections 
LCD Section 2: 
Indoor and outdoor temperature and 
relative humidity, wind chill, dew 
point, rainfall, and respective alarms 
sections
LCD Section 3: 
Wind direction, wind speed, and re-
spective alarms sections 

Sunny  Rainy Cloudy
Weather forecasting (LCD Section 1) 
The three weather icons Sunny, Cloudy and Rainy represent the 
weather forecasting. There are also two weather tendency indicators 
to show the air pressure tendency either side of the weather icons.  
Notes to inHg sensitivity setting for weather forecasting: 
The inHg pressure sensitivity can be set to suit the user’s requirement 
for weather forecasting from 6 inHg, 9 inHg to 12 inHg (see Basic 
Programming below).  For areas that experience frequent changes 
in air pressure (which does not necessarily reflect a change in the 
weather) requires a higher inHg setting compared to an area where 
the air pressure is stagnant. For example if 6 inHg is selected, then 
there must be a fall or rise in air pressure of at least 6 inHg before the 
weather station will register this as a change in weather. 
Air Pressure (LCD Section 1) 
The air pressure reading is displayed here. Press the PRESSURE 
key to toggle between relative and absolute air pressure displays. 
Notes to Absolute and Relative Air Pressure: 
Absolute air pressure provides the display of the true measured air 
pressure of the current time and location. This is not programmable 
and the absolute air pressure range of the weather station is from 
8.85 inHg to 32.45 inHg (standard air pressure at an altitude of 
30,000ft is around 8.85 inHg). 
Relative air pressure is the one value that is calculated back to sea 
level from the local absolute air pressure and can thus be taken as a 
reference for weather condition and weather development for the 
entire country. It can be programmed to represent your local sur-
roundings.  Since the relative air pressure is also the one value given 
by various newspapers, TV and radio broadcasting stations in their 
daily weather forecasts for their respective locations, users can set 
the relative air pressure of the weather station to this value to repre-
sent readings your their area (see Basic Programming Modes be-
low). 
Weather Data (LCD Section 2) 
Indoor temperature and humidity are displayed simultaneously in this 
section. Use the DISPLAY key to toggle through the displays for other 
weather information: 
- Outdoor temperature/humidity 
- Outdoor wind chill 
- Outdoor dew point 
- Rainfall 24h 
- Rainfall 1h 
- Rainfall total. 
Notes to Dewpoint and Windchill: 
Air can at a certain temperature only carry a certain amount of water 
(water vapor), which also increases and decreases with temperature. 
If the air temperature decreases below the dewpoint (saturation 
point), the excessive water vapor will condense and fall out in form of 
dew, fog or rain. At a temperature of e.g. 59°F and a relative humidity 
of 50% the dewpoint will be about 41°F, at 80% humidity about 
53.6°F. At a relative humidity of 100% saturation is reached, i.e. the 
dewpoint is 59°F. At a dewpoint below freezing the fallout will become 
frost or snow. 
Windchill has been introduced for battle planning during World War II. 
It represents not the real measured but the temperature a person 
feels in open area under the influence of wind and cold. Windchill is 
laid out in tables for various temperatures and wind speeds. At an 
outdoor temperature of e.g. 46.4°F and calm winds a person moving 
at a speed of 13 mph will already feel a windchill temperature of 32°F. 
Wind Data (LCD Section 3) 
The current wind direction will be displayed on the LCD compass on 
the wind section. Press the WIND key to toggle between wind direc-
tion as numerical (e.g. 225°) and abbreviated characters (e.g. SW) as 
well as numerical wind speed display inside the compass circle. 

12.   Operation keys 
The base station has 8 keys for easy operation. Please refer to the 
following table for use and function of each key: Further descriptions 
of the key functions with regard to their immediate range of applica-
tion can be found in the Programming modes: 
SET - key  -  In normal mode to enter the manual basic 
programming mode 
-  In basic programming mode to select the 
following setting modes: 
-  LCD contrast setting 
-  Manual time setting (hours/minutes) 
-  12/24 time format display 
-  Calendar setting (year/month/date) 
-  Time zone setting 
-  °C/°F temperature setting 
-  Wind speed unit setting 
-  Rainfall unit setting 
-  Pressure unit setting 
-  Relative air pressure setting 
-  Weather picture threshold setting 
-  Storm warning setting 
-  Audible storm alarm setting 
- In setting modes confirmation of the se-
lected values 
-  In alarm modes alarm ON/OFF 
- In alarm mode to enter programming of 
alarm values (long pressing) 
-  To exit MIN/MAX modes 
PRESSURE - key  - Toggle between Absolute and Relative air 
pressure displays 
DISPLAY - key  - Toggle between the following current/ 
maximum/ minimum display modes: 
-  Indoor temperature and humidity 
-  Outdoor temperature and humidity 
- Outdoor wind chill 
-  Outdoor dew point 
-  Rainfall (24h, 1h, total) 
WIND - key  To toggle between the following settings: 
- Wind speed 
- Wind direction 
-  Wind direction display in degrees  
ALARM - key  - In normal mode to enter the alarm pro-
gramming mode 
-  In alarm programming mode to select the 
following setting modes: 
-  Time alarm setting 
-  Indoor temperature alarm (high & low)  
-  Outdoor temperature alarm (high & low) 
-  Indoor humidity alarm (high & low) 
-  Outdoor humidity alarm (high & low) 
-  Outdoor wind chill alarm (high & low) 
-  Outdoor dew point alarm (high & low) 
-  Rainfall alarm (24h, 1h) 
-  Pressure alarm (high & low) 
-  Wind speed alarm (high & low) 
-  Wind direction alarm 
- In setting modes confirmation of the se-
lected values 
-  To exit MIN/MAX modes 
-  To reset general alarm symbol 
MIN/MAX - key  -  In normal display mode to toggle between 
display of MIN/MAX values 
-  To toggle between MIN/MAX values in 
MIN/MAX mode 
-  To exit any programming mode 
PLUS (+) – key  -  In normal display mode to toggle between 
format of date display, seconds, time alarm 
and time zone 
-  To increase the values in the setting 
modes  
-  To exit MIN/MAX modes 
- In normal display mode to re-enter data 
learning mode (long pressing for 2 sec-
onds) 
MINUS (-) – key  -  In normal display mode to enable/disable 
the buzzer alarm (long pressing) 
-  To decrease the values in the setting 
modes 
-  In basic programming mode audible storm 
alarm ON/OFF 
-  To snooze the alarms off 24 hours when 
the alarm is sounding 
-  In MIN/MAX modes to reset recorded 
values and recorded dates and times 

13.  Basic Programming Modes 
Manual Setting modes 
The manual setting mode allows the user to change several basic 
settings, which is done by accessing one mode after the other simply 
by pressing the SET key. After the final mode, or if no key is pressed 
for 30 seconds, the manual setting returns to the normal display 
mode. 
The manual setting takes the user through the following modes: 
1.  8 level LCD contrast setting (default level 5) 
2.  Manual time setting (hours/minutes) 
3.  12/24h time display select (default 12 hours) 
4.  Calendar setting (year/month/date) 
5.  Time zone setting from 0 to +12 hrs, -1, -2, -3, AT -4, ET -5, 
CT -6, MT -7, PT -8, AL -9, HA -10, -11, -12 (default ET -5) 
6.  Temperature display unit degree Celsius or Fahrenheit (de-
fault degree Fahrenheit) 
7.  Wind speed display units in m/s, km/h, mph, Beaufort, knots 
(default setting mph) 
8.  Rainfall display in mm or inch (default setting inch) 
9.  Air pressure display in hPa or inHg (default setting inHg) 
10.  Relative air pressure setting from 27.10 inHg – 31.90 inHg 
(default 29.98 inHg) 
11. Weather forecast sensitivity setting 6, 9, 12 inHg (default  
setting 9 inHg) 
12.  Storm warning sensitivity setting 9, 12, 15, 18, 21, 24, 29 
inHg (default 9 inHg) 
13.  Audible storm alarm On/OFF (default ON) 
To change any of the above values, once your are in the setting 
mode, use the PLUS (+) or MINUS (-) keys to select the values fol-
lowed by the SET key to enter the next setting.  Continue to press the 
SET key to toggle through the setting mode until the LCD returns to 
the normal display mode or press the MIN/MAX key at any time to 
exit. 
Note! 
Keeping the PLUS (+) or MINUS (-) key depressed when setting 
certain units in the manual setting mode will increase/decrease digits 
in greater steps. 
Manual time setting 
The base station will continue to scan for the radio controlled time 
signal from 12am-6 am (1am-6pm summer time) each day despite it 
being manually set. During reception attempts the WWVB tower icon 
will flash. 
•  If reception has been unsuccessful, then the WWVB tower 
icon will not appear but reception will still be attempted the 
following hour within the time frame 
• If reception has been successful, the received time and date 
will overwrite the manually set time and date and no further 
reception is attempted until the following day 
14.  MIN/MAX Programming Modes 
MIN/MAX display Mode 
The MIN/MAX Mode provides the user with information about the 
MIN/MAX values of all weather data together with the time and date 
at which these values were recorded.  
Entering each MIN/MAX mode 
In the normal display mode for e.g. the indoor temperature and hu-
midity, press MIN/MAX key to toggle the display between the maxi-
mum, minimum and current records.  While the maximum or minimum 
values are shown press the DISPLAY key once to show the time and 
date that value was received.  Now press the MIN/MAX key to toggle 
from the minimum and maximum readings and the time and dates the 
records were received are also shown.  Still in the MIN/MAX mode 
(where the time and date for a value are shown), press the DISPLAY 
key to move through each respective unit as follows: 
• Indoor temperature (max or min with time and date) 
• Indoor humidity (max or min with time and date) 
• Outdoor temperature (max or min with time and date) 
• Outdoor humidity (max or min with time and date) 
• Outdoor wind chill (max or min with time and date) 
• Outdoor dew point (max or min with time and date) 
• Rainfall 24 hours (max or min with time and date) 
• Rainfall 1 hour (max or min with time and date) 
• Rainfall total (max only with time and date) 

When in any of the above modes, press the MIN/MAX key to toggle 
between the maximum or minimum values of those records and their 
respective time and dates will also be shown.  
For the wind and pressure minimum and maximum readings, the 
same would apply except that the WIND or PRESSURE keys would 
be used instead of the DISPLAY KEY. 
Exiting the MIN/MAX modes 
If the maximum and minimum modes with times and dates are dis-
played, press the PLUS (+) key twice to return the normal display 
mode.   
Resetting the MIN/MAX records 
While in the minimum or maximum mode, the time and dates are also 
displayed along with the recorded values.  If the MINUS (-) key is 
pressed while any of these values are displayed, that particular mini-
mum or maximum record will be reset to current reading together with 
the current time and date with the exception of the following: 
  The first case is Rainfall Total, which has neither maximum nor 
minimum records since it will show only the total rainfall. Pressing 
the MINUS (-) key will reset the rainfall total value to zero and the 
time recording to current time. 
  The second case is Rainfall 24h or 1h, which records maximum 
rain count only for these respective times. Pressing the MINUS (-
) key in either of these two modes will reset the rain count to the 
current rain count and time and date.  
15.  Alarm Programming Modes 
Alarm Modes 
As well as the normal time alarm, this feature will allow users to set a 
range of specific alarms to meet specific weather and temperature 
conditions set by the user.  The weather station allows for the follow-
ing 13 alarms modes to be set: 
1. Time alarm 
2.  Indoor temperature high alarm and low alarm 
3.  Outdoor temperature high alarm and low alarm 
4.  Indoor humidity high alarm and low alarm 
5.  Outdoor humidity high alarm and low alarm 
6.  Wind chill high alarm and low alarm 
7.  Dew point alarm high alarm and low alarm 
8.  Rainfall 24h alarm 
9.  Rainfall 1h alarm 
10.  Pressure high alarm and low alarm 
11.  Wind speed high alarm and low alarm 
12. Wind direction alarm 
13.  Storm warning alarm 
Setting Alarms: 
For alarm setting, press the ALARM key once while in normal opera-
tion mode to enter the normal alarm time and by further pressing the 
ALARM key will toggle through each of the alarm modes: 
Note: 
The alarm icon will automatically appear upon pressing the SET 
key to tell the user the alarm is activated. Further pressing the 
SET key will deactivate/reactivate the alarm. 
Time alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Press and hold the SET key to enter the alarm hour time set 
mode (the hour digits will flash) and set the desired hour by using 
the PLUS (+) or MINUS (-) keys 
3)  Press the SET key to enter the alarm minute time set mode (the 
minutes digits will flash) and set the desired minutes using the 
PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm followed by the MIN/MAX key to 
return to the normal display mode. 
Indoor temperature high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Press the ALARM key again to enter indoor temperature high 
alarm set mode 
3)  Press and hold the SET key to enter the indoor temperature high 
setting values (digits will start flashing) and set the desired indoor 
temperature high by using the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM once more to 
toggle to the indoor temperature low alarm set mode. 
5)  Press and hold the SET key to enter the indoor temperature low 
setting values (temperature digits will start flashing) and set the 
desired indoor temperature low by using the PLUS (+) or MINUS (-
) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Outdoor temperature high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the outdoor 
temperature high alarm set mode 
3)  Press and hold the SET key to enter the outdoor temperature high 
setting values (temperature digits will start flashing) and set the 
desired outdoor temperature high by using the PLUS (+) or MI-
NUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM once more to 
toggle to the outdoor temperature low alarm set mode. 
5)  Press and hold the SET key to enter the outdoor temperature low 
setting values (digits will start flashing) and set the desired outdoor 
temperature low by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Indoor humidity high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the indoor hu-
midity high alarm set mode 
3)  Press and hold the SET key to enter the indoor humidity high 
setting values (% digits will start flashing) and set the desired in-
door humidity high by using the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM once more to 
toggle to the indoor humidity low alarm set mode. 
5)  Press and hold the SET key to enter the indoor humidity low set-
ting values (digits will start flashing) and set the desired indoor 
humidity low by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Outdoor humidity high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the outdoor 
humidity high alarm set mode 
3)  Press and hold the SET key to enter the outdoor humidity high 
setting values (digits will start flashing) and set the desired outdoor 
humidity high by using the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to the outdoor humidity low alarm set mode. 
5)  Press and hold the SET key to enter the outdoor humidity low 
setting values (digits will start flashing) and set the desired outdoor 
humidity low by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to the to enter another alarm setting mode. 
Wind chill high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the wind chill 
high alarm set mode 
3)  Press and hold the SET key to enter the wind chill high setting 
values (digits will start flashing) and set the desired wind chill high 
by using the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to the wind chill low alarm set mode. 
5)  Press and hold the SET key to enter the wind chill low setting 
values (digits will start flashing) and set the desired wind chill low 
by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Dew point alarm high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the dew point 
high alarm set mode 
3)  Press and hold the SET key to enter the dew point setting values 
(digits will start flashing) and set the desired dew point high by us-
ing the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to the dew point low alarm set mode. 
5)  Press and hold the SET key to enter the dew point low setting 
values (digits will start flashing) and set the desired dew point low 
by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Rainfall 24h alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the rain 24 hour 
alarm set mode 
3)  Press and hold the SET key to enter the rain setting values (digits 
will start flashing) and set the desired rain values by using the 
PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to another alarm setting mode. 
Rainfall 1h alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the rain 1 hour 
alarm set mode 
3)  Press and hold the SET key to enter the rain setting values (digits 
will start flashing) and set the desired rain values by using the 
PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to another alarm setting mode. 
Pressure high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the pressure 
high alarm set mode 
3)  Press and hold the SET key to enter the pressure setting values 
(digits will start flashing) and set the desired pressure high by us-
ing the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to the pressure low alarm set mode. 
5)  Press and hold the SET key to enter the pressure low setting 
values (digits will start flashing) and set the desired pressure low 
by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Wind speed high alarm and low alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the wind speed 
high alarm set mode 
3)  Press and hold the SET key to enter the wind speed setting values 
(digits will start flashing) and set the desired wind speed high by 
using the PLUS (+) or MINUS (-) keys 
4)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn to the normal display mode or press the ALARM key once 
more to toggle to the wind speed low alarm set mode. 
5)  Press and hold the SET key to enter the wind speed low setting 
values (digits will start flashing) and set the desired pressure low 
by using the PLUS (+) or MINUS (-) keys 
6)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Wind direction alarm setting 
1)  Press the ALARM key to enter the normal time alarm 
2)  Continue to press the ALARM key until you reach the wind direc-
tion alarm set mode 
3)  Press and hold the SET key to enter the wind direction setting 
values. 

4)  Using the PLUS (+) or MINUS (-) keys select the desired wind 
direction and use the SET key to confirm or cancel each direction 
input 
5)  Press ALARM key to confirm and press the MIN/MAX key to re-
turn the normal display mode or press the ALARM once more to 
toggle to another alarm setting mode. 
Storm warning alarm setting 
Unlike the other weather alarms, the storm warning alarm is set by 
entering the main manual setting mode as follows: 
10) Press the SET key to enter the manual setting mode 
11) Continue to press the SET key until the Storm warning icon 
flashes (tendency arrow flashing downwards with the pressure 
values flashing) 
12) Set the desired inHg pressure value (9, 12, 15, 18, 21, 24, 27 
inHg) using the PLUS (+) or MINUS (-) keys 
13) Press the MIN/MAX key to confirm and return to the normal dis-
play. 
Storm warning alarm ON/OFF 
After storm warning alarm setting, the next mode to appear after 
pressing the SET key is the storm warning ON/OFF.  Use the PLUS 
(+) or MINUS (-) key to change the status to  AON or AOFF. Default 
setting is ON: 
Should the air pressure drop equal or below the pre-set inHg value 
within the last 6 hour period, then the downward tendency arrow will 
flash as an indication of possible storm. The base station will take 
hourly measurements as a point of reference.  The storm-warning 
indicator will stop flashing once the air pressure becomes more sta-
ble. 
Master Alarm – BUZZER OFF 
The time and all the weather alarms may have buzzer sound set to 
OFF by holding the MINUS (-) key down for about 3 seconds in nor-
mal display mode and the BUZZER OFF icon appears on the bottom 
left of the LCD.  When the BUZZER OFF is displayed, the time and all 
other weather alarms when activated will only flash but not sound 
regardless if that particular alarm has been set to the ON. To deacti-
vate the BUZZER OFF, press the MINUS (-) key once more. 
General Alarm Icon 
The general alarm icon on the bottom right corner of the LCD will 
appear when any weather alarm is activated to show the user that a 
set weather condition has been reached. The activated alarm can be 
determined by checking the set alarm values against the MIN/MAX 
values reached. To deactivate the general weather alarm icon, press 
the ALARM key. 
Important 
When entering the alarm set mode for a specific weather or tempera-
ture condition, the corresponding alarm is automatically enabled (ON) 
when the SET key is pressed, regardless of its previous setting and 
the alarm value will flash to indicate that it has been activated.  Press 
the ALARM key to confirm the setting and continue pressing the 
ALARM key to toggle through each alarm mode until it returns to the 
normal display mode or press the MIN/MAX key at any time to exit the 
alarm setting modes. 
When a set weather alarm condition has been activated, that particu-
lar alarm will sound and flash for approximately 2 minutes but will 
continue to flash until weather conditions have become more steady. 
Weather Alarms 
The weather alarms are settable for when certain weather conditions 
are met according to the users requirements.  For example, the user 
can set the thresholds for the outdoor temperature to +86°F (high) 
and 14°F (low), while only enabling the high alarm and disabling the 
low alarm (i.e. temperatures <-14°F won’t trigger alarm, but tempera-
tures >+86°F will). 
Alarm setting   Minimum  Maximum 
Storm threshold  0.09 inHg  0.27 inHg 
Relative Air Pressure  27.10 inHg  31.89 inHg 
Outdoor Temperature  -21.8°F  +157.8°F 
Indoor Temperature  14.1°F. No alarm will 
sound if the minimum 
indoor temperature 
alarm is set below this 
value. 
+139.8°F 
Humidity (all)  20% RH  95% RH 
Rainfall 24h  0.0 inch  39.37 inch 
Rainfall 1h  0.0 inch  39.37 inch 
Wind  0.0 mph  111.8 mph 

Hysteresis 
To compensate for fluctuation of the measured data, which may 
cause the weather alarm to sound constantly if the measured reading 
is close to user set level, a hysteresis function has been implemented 
for each weather alarm.  For example, if the high temperature alarm is 
set to +77°F and the current value moves to +78°F, the alarm will be 
activated (if it has been enabled). Now when the temperature drops to 
+76°F or below and thereafter again increases to beyond +77°F, the 
data will be blinking, but no alarm will be activated. It has to drop to 
below +75.2°F (with a pre-set hysteresis of 1.8°F) so that the alarm 
can be produced again.  Hysteresis values for the various weather 
data types are given in the following table: 
Weather data  Hysteresis 
Temperature 1.8°F 
Humidity 3% RH 
Air pressure  0.0295 inHg 
Rainfall 24h  0.1968 inch 
Rainfall 1h  0.01968 inch 
Wind   3.1 mph 
16.  Auto memory for stored values 
The base station has a memory back up system, which is used to 
memorize user-defined settings for when the batteries are changed or 
if a power failure occurs. User defined units are automatically updated 
each time these are changed.  The base station will memorize the 
following user defined units: 
• Time zone 
•  12/24h time display mode 
•  Unit settings (temperature, pressure, rainfall, wind) 
•  Air pressure offset for calculation of relative air pressure 
•  Weather picture threshold 
•  Storm warning threshold 
• LCD contrast 
• Alarm time 
•  Weather Alarm thresholds 
•  State of alarms (enabled/disabled) 
•  Rainfall total value and reset time/date 
17. Accessories: adding cable extensions 
For your convenience, additional telephone cables to increase the 
connection distance between each of the units may be purchased 
from any reputable hardware store.  Simply add these to the current 
cables to extend your cable connection distance. 
When securing the cables during mounting, ensure that base station 
can receive the weather data since increasing the cables lengths may 
also increase levels of interference and result with reception difficul-
ties.  Interference levels will greatly depend on the surrounding area 
for example setting up on or near metal piping may considerably 
reduce reception. 
For best results, do not to add more than 32ft of extension cable from 
item to item onto the existing cable lengths as this may reduce recep-
tion levels.  Again, reception and interference levels will greatly de-
pend on the surrounding environment at your point of mounting. 
Note: 
It is important to keep all the connected extension heads away from 
rain, moisture and other extreme weather conditions as exposure can 
cause short circuits and damage to this item.  
Telephone Extension Cables 

18. Changing batteries: 
Battery change only in the thermo-hygro-sensor: 
1.  Open the battery cover 
2.  Remove the old batteries and insert with new ones of the rec-
ommended type and replace the cover 
Once the sensor is powered up, press and hold the PLUS (+) key for 
approx. 2 seconds in the normal display mode, the base station will 
sound a short beep and synchronize to the sensor otherwise no 
weather data will be received. 
Battery change only in the base station: 
1.  Connect power adaptor to base station and power outlet. 
2.  Open the battery cover located at the back of the base station. 
3.  Remove the old batteries, insert with new ones of the recom-
mended type and replace the cover 
This method of battery replacement will result in no loss of MIN/MAX 
and history data.  However in case of possible power failure, the base 
station will lose the MIX/MAX and all weather data recordings and will 
need to be synchronized to the sensors again by pressing the PLUS 
(+) key for 2 seconds. 
Note: 
When batteries require replacement for the base station, the low 
battery indicator will light up on the LCD. 
Please participate in the preservation of the environment 
by properly disposing of all used-up batteries and accu-
mulators at designated disposal points.  Never dispose of 
batteries in a fire as this may cause explosion, risk of fire 
or leakage of dangerous chemicals and fumes 
19.  Interferences and problems with operation 
Problem & cause  Remedy 
Distance between 
transmitters and re-
ceiver too long. 
Reduce distance between transmitters 
and receiver to receive signal 
High shielding materi-
als between the units 
(thick walls, steel, con-
crete, isolating alumi-
num foil and etc.) 
Find a different location for sensors 
and/or receiver. See also Item ‘Trans-
mission Range’ below. 
Interference from other 
sources (e.g. wireless 
radio, headset, 
speaker, etc. operating 
on the same frequency) 
Find a different location for the sensors 
and/or base station. Neighbors using 
electrical devices operating on the 
433MHz signal frequency can also 
cause interference with reception 
No Reception after 
adding extension ca-
bles 
Find a new location for the sensors 
and/or base station. Recommend not 
adding more than 32ft extension ca-
bles between units to the existing 
cable lengths, as this will increase the 
chance of data reception problems. 
Reception then no 
reception - loss of 
transmission signal 
from the sensor to the 
base station 
Press and hold the PLUS (+) key for 2 
seconds to synchronize the base sta-
tion to the sensors for weather data 
reception.  If still no signal, then 
change the sensor batteries and syn-
chronize the units again. 
Poor contrast LCD or 
no reception or low 
batteries in sensors or 
receiver. 
Check the LCD contrast setting or 
change batteries (check low battery 
indicator on the LCD) 
Quite frequently interferences are only of a temporary nature and may 
be easily overcome. If there are wireless headsets, remote babysit-
ters or other devices working on 433MHz in your house or in the vicin-
ity, their switch-on time is mostly limited. Furthermore most of these 
devices allow the change to an interference-free frequency. Such 
measures will effectively overcome interferences. 

20.   Transmission Range 
The transmission distance from the thermo-hygro sensor to the base 
station in open space under optimum conditions is 100ft.  Although 
the signal transmission may travel though solid surfaces or objects, 
the following points should be avoided if possible: 
-  High frequency interferences of any kind. 
-  High densities of trees. 
-  Broadband interferences in municipal areas can reach levels 
reducing the signal/noise ratio over the entire frequency band, 
thus also reducing the transmission distance. 
-  Devices working close by (example a neighbor’s house) may 
also influence reception. 
-  Poorly shielded PCs can cause interferences that will reduce or 
in some cases stop reception 
-  The transmitter and receiver should not be mounted on metal 
surfaces as this will reduce transmission range. 
21. Cleaning and Maintenance 
-  Clean the housing and screen of the base station only with a soft 
damp cloth.  Do not use abrasives or solvents. 
-  Ensure that the rain sensor does not collect leaves or other dirt 
by checking the funnel for blockages every now and then.  Also 
clean the seesaw of the sensor with a damp cloth and check by 
lightly tapping with your finger that it can move freely from side 
to side. 
- Do not clean the funnel with the bottom half of the rain sensor 
attached nor the bottom part itself under running water. This 
may bear the danger of water entering the unit’s inner parts and 
cause damages. 
-  Do not immerse the base station in water. 
-  Should there be damage to this product, please do not attempt 
to make any repairs.  Please take this unit to a qualified techni-
cian. Opening or improper handling of the units will invalidate 
any guarantee. 
22. Specifications 
Outdoor data 
Transmission Distance in Open Field:  100ft max. 
Temperature Range  :  -21.8°F to +157.8°F (show 
OFL” if outside range) 
Resolution : 0.2°F 
Measuring Range Rel. Humidity  :  20% to 95% (if the relative 
humidity is less than 20% or 
greater than 95%, it will dis-
play 19% or 96%) 
Rain Volume Display  :  0 to 39.37 inches (1h and 
24h rainfall) 
  0 to 98.38 inches (Total 
rainfall) 
Resolution : 0.1mm 
Wind Speed  :  0 to 111.8 mph 
Resolution : 0.1 mph 
Wind Direction  :  Graphic Resolution 22.5 
Degrees, Numerical Resolu-
tion, Letter format 
Using 433MHz wireless data transmission: 
Measuring interval  
thermo-hygro sensor  :  32 sec (if wind factor>22.36 
mph) or 128sec (if wind fac-
tor< 22.36mph) 10 minutes (if 
the base station fails to re-
ceive any data after 5 at-
tempts in a row, all outdoor 
data readings will display “---“, 
except for the rain value) 
With cable connection for data transmission: 
Measuring interval  
thermo-hygro sensor  :   8 seconds  
Indoor data 
Pressure/ temperature  :  4 times per minute 
Indoor Temperature Range  : 14.1°F to + 139.8°F (shows 
“OFL” if outside range) 
Resolution : 0.2°F 

Measuring Range Rel. Humidity  :  20% to 95% (if the relative 
humidity is less than 20% or 
greater than 95%, it will dis-
play 19% or 96%) 
Resolution : 1% 
Measuring Range Air Pressure  :  8.85 inHg to 32.45 inHg 
    (Standard air pressure at an 
    altitude of  30,000 ft 
    is around 8.85 inHg) 
Resolution . 0.01 inHg 
Relative humidity checking interval  :   every 30 seconds 
Alarm duration  :   2 minutes (approx.) 
Power consumption 
Base Station 
Batteries  :  3 x AA, IEC LR6, 1.5V (Alka-
line recommended)  
or AC power  :  INPUT 120V AC 60HZ (use 
the provided AC/DC adapter 
only) 
Thermo-hygro sensor  :  2 x AA, IEC LR6, 1.5V (or 
can draw power from the 
adapter if used) 
Battery life using 433MHz:  :  approximately 12 months 
    (alkaline batteries recom-
  mended) 
Battery life using cable connection  :  approximately 6 months 
    (alkaline batteries recom-
  mended) 
Dimensions (L x W x H): 
Base Station  :   170 x 35 x 138 inches 
Thermo-hygro sensor  :  71.5 x 73 x 136 inches 
Rain sensor  :  140 x 70 x 137 inches 
Wind sensor  :  60 x 197 x 291 inches 
23. Warranty Information 
La Crosse Technology provides a 1-year warranty on this 
weather station.  Contact La Crosse Technology immediately 
upon discovery of any defects covered by this warranty. 
Before sending the Weather Station in for repairs, contact La 
Crosse Technology.  The Weather Station will be repaired or 
replaced with the same or similar model. 
This warranty does not cover any defects resulting from im-
proper use, unauthorized repairs, faulty batteries, or the Weather 
Stations inability to receive a signal due to any source of inter-
ference. 
LA CROSSE TECHNOLOGY WILL NOT ASSUME LIABILITY FOR 
INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR 
DAMAGES ASSOCIATED WITH THE OPERATION OR MALFUNC-
TION OF THIS WEATHER STATION.  THIS PRODUCT IS NOT TO 
BE USED FOR MEDICAL PURPOSES OR FOR PUBLIC INFOR-
MATION.  THIS PRODUCT IS NOT A TOY.  KEEP OUT OF CHIL-
DRE’S REACH. 
This warranty gives you specific legal rights.  You may also have 
other rights specific to your State.  Some States do no allow the 
exclusion of consequential or incidental damages therefore the 
above exclusion of limitation may not apply to you. 
For warranty work, technical support, or information contact 
La Crosse Technology 
1116 South Oak Street 
La Crescent, MN 55947 
Phone: 507.895.7095 
Fax: 507.895.8000 
e-mail: support@lacrossetechnology.com (warranty work) 
sales@lacrossetechnology.com (information on other products) 
web: www.lacrossetechnology.com 
FCC ID:   OMOWS-2310-RX (Receiver) 
OMOWS-2310-TX (transmitter) 
This device complies with Part 15 of the FCC Rules.  Operation is 
subject to the following two conditions: 
1.  This device may not cause harmful interference, and 
2.  This device must accept interference received, including 
interference that may cause undesired operation