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LA Crosse Technology WS 2-550


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Comments to date: 1. Page 1 of 1. Average Rating:
rich_oston 1:20am on Sunday, August 1st, 2010 
PROS: OS, look, Awesomeness ITs great, and the idea is well along with the OS its a Mac downsized. its size is a bit big Bought the 16G WiFi for my wife. She enjoys playing games, surfing the web, reading books, reading email and catching up on her Soaps at Awesome game player, and has replaced my laptop but I do not have to need for business and so I do not know about how those work. Great for traveling,...

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TouchScreen Wireless Weather Station WS 2-550

Operating Instructions

La Crosse Technology


1. 2. 2.1. 2.2. 3. 3.1. 3.2. 3.3. 3.3.1. 3.3.2. 3.3.3. 3.3.4. 3.3.5. 3.3.6. 3.3.7. 3.3.8. 3.3.9. 3.4. General aspects and functioning, Quick Overview... 4 Preparatory work.... 8 Preparing the weather station.... 8 Connecting to the mains.... 8 Inserting batteries.... 9 Installing/Mounting.... 9 Start-up.....13 Combi-sensor TX 550....13 Operations....16 Log in/delete external sensors....16 Operations.... 18 Configuration.....20 "SENSOR" menu, Login/ Delete sensors...20 "TIME/DATE" menu, Set the time and date...20 "UNITS" menu, Set the display units....21 "POSITION" menu, Set position...22 "TIMEZONE" menu, Set time zone...23 "LIGHTING menu, time setting for the background lighting and.. regulating the brightness of the lightening..23 "SYSTEM" menu, System settings....24 "BEEP", Activate/ deactivate beep...24. "DST", Activate/ deactivate the daylight saving time switching..25 "INTERVALL", Set the recording interval for the datalogger..25 "ALTITUDE", Adjust the location height above sea level..25 "RAIN CAL", Enter the comparison value for the rain sensor..26 "SUN CAL", Configure brightness threshold value for duration of sunshine.26 "CLEANING" menu, Cleaning mode...27 "LIVE MODE" menu, call up the current weather data flow..28 Other Functions and Displays....29 Display moon phases....29 Oscar Outlook....29 Weather forecast....29 Wind symbol display....29 Immediate Rain Display....30 Comfort Indicator....30 History.....30 Data memory....30 Data transfer to the combi-sensor "WAIT FOR TRANSMISSION"..30 Temperature trend display....30 Sensor Status Display....31 Warning against turbulent weather....31 Frost warning.....31
4. 5. 6. 7. 7.1. 7.2. 8. 9. 10. 11. 12. 13.
Changing the batteries....31 Troubleshooting.....32 Range.....34 Instructions for Maintenance and Care...34 Cleaning the rain quantity sensor...35 Setting the rain sensor...36 Technical specifications....37 Optional PC connection for third party software..38 Appendix....39 Proper use, exclusion of warranty, Safety Instructions....40 Wireless Technology BidCoS....41 FCC Information....42 Appendix A: Menu Overview WS 2-550...43 Appendix B: Table of latitude/longitude of French counties.44 Appendix C: Table of time zone difference from UTC..62.
1. English Edition 3/2007 Documentation 2007 La Crosse Technology All rights reserved. No parts of this manual may be reproduced or processed in any form using electronic, mechanical or chemical processes in part or in full without the prior explicit written permission of the publisher. It is quite possible that this manual has printing errors or defects. The details provided in this manual are checked regularly and corrections are done in the next edition. We do not assume any liability for technical or printing errors. All registered trade marks and copyrights are acknowledged. Printed in Hong Kong. We reserve the right to make changes due to technical advancements without prior notice. 74889 Y2007 V1.0
1. General aspects and Function
The TouchScreen Wireless Weather Station WS 2-550 is a high-quality, highly comfortable universal weather measurement system that can record, process and display data from a maximum of 8 (currently not available) additional wireless temperature and humidity sensors as well as a combi-sensor up to a distance of 400 ft. (outdoor range). The combination sensor TX 550 belonging to the weather station is meant for outdoor use and captures the following: Temperature, humidity, direction of wind, wind velocity, set in of rain, rain quantity and duration of sunshine. The weather sensors for inside temperature, indoor humidity and air pressure are already located inside the weather station; hence no external sensor is required for these measurements. The operating concept is the most excellent feature of the weather station. It does not have any traditional operating elements; it is operated only with the help of a highly sensitive TouchScreen and simple menu structures. Even the weather sensors can easily log into the system. Weather data from the combi-sensor can be queried in real time; in live mode touching the respective display field triggers a data query (bi-directional wireless technology). Hence, the latest data is always available. Further, the combi-sensor can also be prompted in "live mode" to send its measurement data for 20 seconds at 2 seconds intervals. You can track in real time the wind direction and the wind velocity for 20 seconds. The display can be illuminated permanently or with time controls; thus the display is legible under almost all light conditions. The glass foot and the transparent design frame of the device are also illuminated. As the weather station has a large internal memory it is best suited for observation over long periods - a total of 3000 records can be stored in the internal memory.

Please read this Operating Instructions manual carefully and in full to avoid functional disturbances and wrong operations. Please store this manual for future reference. Please follow the assembling and calibration instructions for the measure ment recorders.
Overview of the display and operating options of WS 2-550 :
Display the inside temperature and humidity - Switch to displaying the dewpoint - Save the minimum and maximum temperature with time/date of occurrence - Save the minimum and maximum humidity with time/date of occurrence - Comfort zone indicator - Graphical trend display of the last 24 h (only for temperature) Displays outdoor temperature/humidity from Combi Sensor. - Can be switched: Display the dewpoint or wind-chill temperature - Save the minimum and maximum temperature with time/date of occurrence - Save the minimum and maximum humidity with time/date of occurrence - Graphical trend display of the last 24 h (only for temperature) - Frost warning (in Oscar Outlook display) Display the wind velocity with wind direction and fluctuation range - Units for selection: : km/h, m/s, mph - Save the maximum wind intensity with time/date - Display wind direction with fluctuation range as wind rose and in numeric format - Wind-sack symbol for prominent signaling of various wind intensities Display the rainfall quantity in mm, inch or l/m2 for: - Total quantity since the last reset / last hour / current hour / last 24 h / current 24 h (storage for hour: always at xx:30 hours; storage for day: always at 7:30 a. m.) - Save the maximum quantity per hour and per day - Additional display when it starts raining (Immediate rain display) Display the air pressure progress/ air pressure trend display: - Graphical display of the progress in the last 24 h - Display the air pressure trend in 5 stages: heavily increasing, increasing, uniform, decreasing, heavily decreasing Display symbols of the weather forecast: rainy, cloudy, bright, sunny Weather display "Oscar Outlook" Similar to the almost forgotten weather "house" where a person came out of the door with an umbrella if the weather was bad and wore light clothes if it was good, WS 2-550 has "Oscar Outlook". The behavior of this character is based on various weather factors; hence it is immediately possible to know the type of clothing one would need outdoors. Not only the current measured values for outside temperature, humidity, wind and rain are evaluated for this display.
The weather forecast also plays an equally important role. So "Oscar Outlook" has different displays and clothing depending on the weather situation. You will find a detailed description of the evaluation criteria in chapter 3.4 of this Operating Instructions manual. Display the sunrise and sunset time - Calculation can be done in the latitude range of -60 to +60 N depending on the location data that is to be entered. Moon phase display - Display the current moon phase: New moon, waxing moon, waning moon Display the total duration of sunshine or of the current day - Save the minimum and maximum duration per day with time/date of occurrence - Sun symbol if there is sunshine Data logging function - Data logger can collect maximum 3000 records at programmable intervals; these can then be read via an USB interface using. Optional third party software located at (Note: manufacturer does not support software) - If the data logger memory is full, the system displays a timely message prompting you to download the data. Miscellaneous - Very simple set up menu - An acknowledgement beep can be switched on / off as required - Depending on the need, the device can be installed on the table or mounted on the wall - Switching time of the display lighting can be programmed All important weather information appears simultaneously on the display so that it is not necessary to operate the device to capture the data. Multiple basic units can be operated simultaneously; hence the data of the sensors can be simultaneously displayed at multiple locations. The external sensor system of WS 2-550 works exclusively on wireless data transfer. You can thus install or mount the sensors at a maximum distance of 400 ft. (depending on the local conditions, see section "Range") from the base station.

2. Preparatory work

Quick overview of the display fields 19 18
Current indoor temperature with temperature trend Displays the current direction of the wind (main wind direction) Display the fluctuation range when wind direction is changing Displays the speed of the wind Current humidity of the selected outdoor sensor Current temperature of the selected outdoor sensor with temperature trend and reception display 7. Displays the currently selected outdoor sensor (no display if you select TX 550 US) 8. Moon phase display 9. Displays the weather forecast (sunny, bright, cloudy, rainy) 10. Animated multiple weather display "Oscar Outlook" 11. Displays speed of wind (mild, medium, strong) 12. Warning against turbulent weather 13. Frost warning 14. Menu bar 15. Trend display for air pressure: strongly increasing, slightly increasing, constant, slightly decreasing, heavily decreasing; for further details please refer concept definitions 16. History display, always with reference to the current value, also see 26. 17. Display the current air pressure 18. Time and Date display 19. Displays the sunrise and sunset time 20. Displays duration of sunshine 21. Sun symbol if the sun is currently shining, otherwise cloud symbol 22. Display the rain quantity 23. Display of set in of rain 24. Current indoor humidity level 25. Comfort zone indicator for displaying comfortable / uncomfortable climate 26. Symbol is displayed for the weather factor whose history is currently being displayed (indoor or outdoor temperature); if this symbol is not displayed, then the air pressure history is displayed

1. 2. 3. 4. 5. 6.

2.1. Preparing the weather station The weather station is exclusively operated via the plug-in mains adapter that is delivered. Battery operations are possible with 4 AA cells (1.5 V, alkaline type) in an emergency mode. The functions of the weather station are then available only in a restricted manner (e. g. no background lighting, no live mode available). The following image shows the rear of the station with battery comportment, correct insertion of the batteries, assembling points for foot support and hanging. Eyelet for wall mounting

USB port

DC-power socket Connection for standing lights

Locks for foot support

Screw threading for foot support

Battery compartment

4 x LR6/AA-cells/Mignon Cover of the battery compartment Connecting to the mains First insert the round DC-plug of the AC adapter into the DC-power socket on the rear side of the device and then the AC adapter in a mains socket.
Any batteries that have been inserted will get switched off. Inserting batteries Remove the cover of the battery compartment and insert four 1.5 V AA-cells, (alkaline type LR6) according to the correct poles into the battery compartment. Close the battery compartment again. PC-connection To connect the station to a PC, use the USB cable to connect the mini USB jack to the USB port of WS 2-550. The plug at the other end of the cable is connected to the USB port of a PC (also see chapter 9.) Installing / Mounting Depending on the requirement, the weather station can be mounted on a vertical surface (such as a wall) using a hanging eye or installed on an horizontal surface using a table-stand. The table-stands are mounted using the Allen screws and Allen key according to the following description:
1. Remove the cover of the foot support: first lock it in at the top, then fold it fully downward and then remove it.
2. Lock in the foot support in the locking nose of the glass foot and place it on the two screw domes.
3. Screw the enclosed Allen key and 2 Allen screws on the glass foot. Please note that the lighting cable of the device foot is guided in from the side as shown in the picture so that it does not get crushed.
4. Place the weather station at the locking nose of the foot support and tilt it on the foot support till the screw dome neatly grips into the corresponding intakes of the weather station. Note! Do not let go of the weather station till both the Allen screws have been fixed in (see next step)! Please do not press the display when you hold the weather station. Hold the weather station only at the frame!

5. Screw the foot support on to the weather station using the enclosed Allen key and 2 Allen screws.
6. The cables are thus connected, inserted into the foot support and guided. Please note that the cable lies exactly in the center as shown so that it will not prevent the lid from subsequently locking in. Note! The cable for lighting the support foot and the USB cable can only be inserted in one direction! Do not insert it using force! Stow away excessive cable in a chamber of the support.
7. Now place the cover for the foot support: Insert it flat into the support intake (also see 1.), fold it upward and lock it in. Note! The cover should fold up easily without any resistance; otherwise, it means the cover has not been placed properly or the cable is not laid correctly in the guide!
You can see the correct guiding of the cable.
8. At the end, the cover is inserted in the corresponding locks of the cable shaft (see detailed picture above), tilted upward and locked in at the top (see lower picture).
Start-up (base station) - After connecting the plug-in AC adapter, the system will run a short test of all display segments in the display (all segments will be displayed). - You will then hear a short beep and the version number of the weather station will be displayed. - Finally, the inside temperature and the humidity as well as the air pressure will be displayed. The corresponding sensors are directly built in the base station. - Now the external sensors need to be started up. 2.2. Combi-sensor TX 550 The combi-sensor is delivered as single parts and needs to be assembled before start-up (for further information please refer to the TX 550 operating instructions). - Remove the wind meter and base of the wind meter (small white cylinder), the combi-sensor and the mounting pipes from the packaging. - Mount the weather cock according to the following description:

Conical side below

1. Mount the base of the wind meter on the free end of the pipe of the combi-sensor holder as shown in the diagram
2. Put cable through the foot of the windcock
3. Insert the foot into the pipe and rotate it in such a way that it can be locked in the respective holes in the pipe using the two screws
4. Insert the plug into the socket of the wind meter

Insert batteries, position of the key The fully mounted TX 550 US
The wireless sensor data is not shown on the display immediately after installing the wireless sensors and starting up the base device. As each sensor has an internal individual serial number, which is automaticly logged into the base station during start up. The advantage here is that data is individually recorded only for those sensors that are logged in and not for other sensors, say of neighboring systems, and also not after a restart. Please note! If no input field is touched on entering data in the menu row for approx. 5 seconds, then the device automatically goes back to the main menu (after including/saving any settings that have been done). Hence wait for the main menu to be displayed after you have entered data. You can thus quit each menu after making the settings. Only touch the respective input fields slightly - do not press them! Do not press or hit using any object! The values can be set faster if you touch a setting field for a longer time; the values are then forwarded faster and you do not have to keep touching the setup fields.
3.1. Log in/delete external sensors
A total of 9 external sensors of the types TX 550 (1x), ASH 550, ASH 550-I and S 550 IAcan be logged in. (Note: The ASH 550, ASH 550-I and S 550 IA are not currently available for purchase.) The memory slots 1.8 are reserved for ASH 550- (I) and S 550 IA. The memory slot 9 has been reserved for the combi-sensor TX 550.For unique sensor assignment in case of multiple sensors of types ASH 550-(I), or S 500 IA we recommend that you first remove the batteries from all the sensors.
Logging in - Touch the "CFG" field in the menu row. - You will see:


- Touch the "NEXT" field, the display is: NEXT SENSOR - Touch the "ENTER" field, the display is: ENTER


- Repeatedly touch the "SENSOR" field and select the memory slot where you want to store the particular sensor. Please note that TX 550 can only be stored in slot 9. - Then select "ADD"; the display is (for e.g. for sensor 9: TX 550): SENSOR NO 9 - - SYNC ADD DEL
- The particular sensor is now taught to the system. Insert the batteries in the respective sensor and press its key to teach. Please also read chapter 2.2 for starting up TX 550 and the operating instructions of the other sensor types. The TX 550 data is then displayed automatically (after max. 6 minutes) in the corresponding fields of the display - that of the remaining sensors after selecting the memory slot ("sensor" field) in the "OUTDOOR" display field. Marking the populated memory slots Memory slots that have already been populated are marked as "USED" behind the memory slot number. However, this does not indicate whether the respective sensor is actually active. You can identify it only from the missing or outdated data when you select the sensor and from the active reception indicator in the "OUTDOOR" field. Deleting a sensor assignment The serial number of a sensor can be deleted from the sensor memory, if required. - First proceed according to the instructions given under "Logging in"; select the desired sensor and then select the "DEL" option instead of the "ADD" option. - The "USED" lettering of the sensor number is deleted and the memory slot is thus released again for logging in a sensor.


Repeatedly activate the "RESET" area and select the desired option and then confirm by touching "OK". The corresponding data is now deleted and the system automatically returns to the main menu and normal data display. However, if you do not want to delete data, then wait till the device returns to the main menu. No data will be deleted. Calling up the Configuration Menu

3.3. Configuration

The weather station is delivered in such a state that its basic functions (except moon phase, sunrise, sunset, date, time, min./max. display) are ready to use without doing any settings. However, another configuration would be needed to use the additional functions and the time-related functions. - Touch "CFG" field to open the configuration menu. - Repeatedly touch "NEXT" to go to the respective next main menu point of the configuration menu. You will find in the appendix a quick reference guide to access the different menus.
3.3.1. "SENSOR" menu, Login/ Delete sensors

see 3.1.

3.3.2. "TIME/DATE" menu, Set the time and date
- Touch the "ENTER" field, the display is: TIME 24H
- Touch the "24H" area to select between time display in 12 and 24 hour format. - Touch the "TIME" field, the display is: YEAR + 2006 -
- Touch the "+" or "-" areas to set the year. - Touch the "YEAR" field, the display is: MONTH + 07 -
- Touch the "+" or "-" areas to set the month. - Touch the "MONTH" field, the display is: DAY + 01 -
- Touch the "+" or "-" fields till today's date (system date) is set. - Touch the "DAY" field, the display is: WEEKDAY + MON 20
- Touch the "+" or "-" areas to set the day of the week. - Touch the "WEEKDAY" field, the display is: HOUR + 01 -
- Touch the "+" or "-" areas to set the hour. - Touch the "HOUR" field, the display is: MINUTE + 01 -
- Touch the "+" or "-" areas to set the minute. - Wait for a few seconds, then the time and date along with sunrise and sunset times for the factory setting (39.8/-77.0 degress, Washington D.C.) and the current moon phase will appear on the display.
3.3.3. "UNITS" menu, Set the display units
- Select the "UNITS" menu: NEXT UNITS ENTER

- Touch the "ENTER" field, the display is: TEMPERATURE DEG C
- Touch the "DEG" field to switch the display between degrees Celsius (C) or Fahrenheit (F). - Touch the "TEMPERATURE" field, the display is: PRESSURE HPA
- Touch the "HPA" field to switch the air pressure display between hPa (HPA), mmHg (MMHG) and inHg (INHG). - Touch the "PRESSURE" field, the display is: RAIN MM
- Touch the "MM" field to switch between rain quantity display in mm (MM), inch (INCH) or l/m2 (L/M2). - Wait for a few seconds; the data will then be displayed in the units that have been set earlier.
3.3.4. "POSITION" menu, Set position
The position details of the weather station location are needed to calculate the sunrise and sunset times. You can enter the latitude in a range between 60.0 and +60.0 and the longitude between - 180.0 and + 180.0. You can determine your position in different ways: The Appendix B contains a table with the coordinates for many US counties. You can select a place in your vicinity and then enter its coordinates - If you have a GPS navigation system in the car or a mobile device you can take over the position details and you will thus have the exact location. - You can also find out the exact coordinates from the Internet. - Select the "POSITION" menu: NEXT POSITION - Touch the "ENTER" field, the display is: LATITUDE + 38.9 -
- Touch the "+" or "-" areas to set the latitude. - Touch the "LATITUDE" field, the display is: LONGITUDE + -77.0 -
- Touch the "+" or "-" areas to set the longitude. - Wait a few seconds; you will then see the corrected day for sunrise and sunset in the display. Please note that the sunrise and sunset details will really be correct at the sea or for a location on the plains. Mountains, high forests can really cut short the actual day. The details can deviate slightly even for the ideal location because an approximation formula is used for the calculations.
3.3.5. "TIMEZONE" menu, Set time zone
The time zone details are required for calculating the sunrise and sunset times. Enter the current difference to UTC (Coordinated Universal Time). The Appendix C countains a table with the time zone difference from UTC for the US. - Select the "TIMEZONE" menu: NEXT TIMEZONE ENTER

- Touch the "ENTER" field, the display is: CLEANING START
- Touch the "START" field, the display is: CLEANING WAIT
- The display can now be cleaned. Normal display resumes after 20 seconds.
3.3.9. "LIVE MODE" menu, call up the current weather data flow
In this mode, another key of the combi-sensor can be prompted to send its measurement data for 20 seconds at 2 seconds interval. Thus, at the press of a key one has the latest weather data and can thus follow the wind direction and the trend of wind velocity for say 20 seconds. As the combi-sensor frequently goes into the receive mode when the "LIVE MODE" is activated, its power consumption increases and this has an effect on the life of the battery. Hence you can use the "LIVE MODE" to set a period for which the "LIVE MODE" should be activated. In this period, the main menu bar will show the additional "REQ" key that was used to query the above-mentioned live data. - Select the "LIVE MODE" menu: NEXT LIVE MODE ENTER
- Touch the "ENTER" field, the display is: BEGIN +04.00 PM-
- Touch the "+" or "-" fields to set the switching-on time of the "LIVE MODE". - Touch the "BEGIN" field, the display is: END +11.45 PM-
- Touch the "+" or "-" fields to set the switching-off time of the "LIVE MODE". - Wait for a few seconds, the device switches back to the normal mode and the data that has just been set gets activated. - In the menu bar, data transfer to the combi-sensor is indicated with the message: "WAIT FOR TRANSMISSION". The weather station cannot be operated till this display is on. - The REQ key for calling data appears in the menu when the "LIVE MODE" is activated: MIN MAX RESET REQ CFG
3.4. Other Functions and Displays
Display moon phases The moon phases are displayed using the following symbols:

Full moon


New moon

Moon phase may vary from your calendar by 1-2 days. Also keep in mind that the moon display will be blank during a new moon and dark during a full moon. Oscar Outlook Oscar Outlook is an animated figure that simultaneously displays multiple weather factors: Outside temperature (only combi-sensor) - The clothing status is based on how high the temperature is on the combisensor. Rain - If the weather forecast has announced rain, then the figure holds a closed umbrella. - The figure carries an opened umbrella when it starts raining. Wind velocity - If the wind velocity is higher than 12.4 mph (20 km/h, medium wind) Oscar Outlook`s hair starts fluttering. At the same time, if the temperature is below 57.2 F (14 C), then even the scarf he is wearing starts fluttering. Weather forecast - The weather forecast symbols indicate the following forecasts: Clouds with rain

7. Instructions for Maintenance and Care
- Protect the base station against dust and moisture. Never clean it with chemical detergents; just use a soft dry piece of linen. Do not put any pressure on the display. - The outdoor sensor is to be cleaned from time to time to remove the dirt and dust that has settled on it. Check easy accessibility of the wind sensors and ensure that the sensors are fitting tight on the holder. 7.1. Cleaning the rain quantity sensor - Depending on the location, leaves, dirt, sand and branches blown by the wind
get collected in the collection funnel of the rain quantity sensor. Larger parts can block the passage. Sand can also accumulate on the pointer; large deposits of it can hamper the measurement result. - Hence the rain quantity sensor is to be cleaned from time to time - at least once a year. The pictures shown below are a guideline for installing / dismantling. - For cleaning the sensor, just remove the sensor housing by slightly turning it to the left. - Further, the collection funnel can also be removed by turning it to the left. - The rainfall sensor is now moved upward, folded towards the cable side and you can now remove the pointer. - Clean the collection funnel, contacts, counter and the drain-hole in the housing and remove all residues. - Place the counter back in its holder. The magnet of the counter should be on the side that faces the cable. - Insert the rain sensor in its holder. It will also automatically hold the pointer. The rain sensor cable and the magnet of the pointer must be located on the same
Pointer inserted correctly
Lock for collection funnel
Rainfall sensor inserted correctly
Housing locked in correctly at the bottom (collection funnel removed for demonstration)
Remove Turn to the left, remove casing downward, remove collection funnel upward Mount Mount, turn to the right

Drain hole

side. - Now place the collection funnel from the top on to the sensor-holder and lock it in by turning it to the right. - Now reinstall the casing and lock it by turning it to the right in the sensor-holder till it locks in. Ensure that the drain-holes of the casing and the sensor-holder match (drain-hole of the casing points outwards).

7.2. Setting the rain sensor The rain quantity measurement system has a high level of accuracy when it leaves the factory; so normally, no adjustments are required. Adjustments would be necessary only if the accuracy requirements are very high. Before you start calibrating the rain water measurement recorder, you need to reset to zero the rainfall quantity value that has already been totaled up (see chapter 3.2. "RESET"), total rain quantity display stands at zero). Further, the rainfall quantity for adjustments must be displayed in "inch". Proceed as follows for exact calibration: 1. Slowly pour 3.38 fl. oz. (100 ml) water over a period of 10 minutes in the rain sensor collection funnel. Note! Quick pouring will give wrong measurement results! Pour the water so slowly into the funnel that there is a even passage of water and there is no water in the funnel at any point of time.
2. The displayed total quantity should now be 0.26 inch (6.5 l/m2). 3. If a different value is shown, then the calibration value that is mentioned is to be recalculated as follows: New calibration value = 0.26 x Current calibration value Actual value (Display reading after filling in the water)
The new calibration value must now be entered in the configuration menu (see 3.3.7., System menu/RAIN CAL). The factory setting is 295/pointer stroke.
8. Technical Specifications
Measurement interval for outdoor sensors... 2-3 min Measurement interval for indoor sensor (Temperature, humidity).. 3 min Interval for measuring air pressure....15 min Transmission frequency.... 868 MHz Outdoor range:.....max. 120 m Indoor temperature range:...32 F to 140 F (0 C to 60 C) Resolution:..... 0.1 C Accuracy:.... 1.8 C (59 F to104 F) Outdoor temperature range (TX 550):..-20 F to 175.8 F (-29 C to 79.9 C) Resolution:..... 0.1 C Accuracy:....1.4 F (50 F to 104 F) Measurement range rel. humidity (inside/outside)...1% rH - 99 % rH Resolution:.....1 % rH Accuracy:.... 5 % rH (30-70 % rH) Rain quantity display:..0 to 39.3 inch (0 to 999 mm) Evaluation interval:...last hour: at xx:30 at 7:30 a. m. Resolution:.... up to 10 inch: 0.01 inch.....above 10 inch: 0.1 inch Wind velocity:...0 to 124 mph (0 to 200 mph) Resolution:....up to 100 mph: 0.1mph.... above 100 mph: 1 mph Wind direction:.... 0 to 355 Resolution:.....5 variation range:...0;22.5; 45; 67.5 Voltage supply: Base station (Main power supply):..7.5 V DC via plug-in mains adapter Base station (back-up power supply):... 4 x Battery AA cells TX 550 :.....3 x Battery AA cells Dimensions Base station without foot (W x H x D):.. 10.2 x 8.5 x 1.3 inch.....(260 x 215 x 32 mm)
Instructions for disposal Do not dispose of the device as part of household garbage!
9. PC connection - Third Party Software Installation
You may visit to download third party software. Please note that the manufacturer does not support the software. The enclosed USB cable with type A connector and mini type B connector is required for connecting to the USB port. - Connect the weather station via the USB cable to the USB port of the computer.




One can thus see that depending on the relationship of the temperature to humidity, there are certain marked ranges that can be defined as comfortable or uncomfortable climate. One would thus feel that at a temperature of 77 F (25 C) and a humidity of less than 30% is very dry (for e.g. air from the heaters) and one above 60% as sultry. Daylight saving time switching The integrated clock implements an automatic daylight saving time switching according to the regulations of the Energy Policy Act of 2005.
11. Proper use, Exclusion of warranty, Safety instructions
- This weather station is meant for personal use as an indicator of the forthcoming weather. The forecasts or predictions made by this device are more for orientation and are not to be construed as absolute forecasts. - The manufacturer of the weather station does not assume any liability for incorrectly measured values and consequences that can result from it. - This weather station is not meant for medical purposes or for informing the public. - The components of this weather station are not a toy; they contain many fragile, glass and small parts. Please install all the components out of the reach of children.
12. Wireless technology BidCoS
BidCoS (Bidirectional Communication Standard) is a new wireless standard that has been specially developed for wireless control of sensors and actors for house automation. It allows you to build an entire house controlling system with compatible components: switch/dim lights and other electrical appliances, air-conditioners (heating, cooling, airing, weather measuring technology, energy management, access control, protection against burglary, safety devices, etc.). Speedy bi-directional communication (wireless signals that are sent are confirmed by the receiver) increases the functional safety and thus form the basis for a multitude of options for remote control / remote monitoring. Bi-directional data transfer of WS 550 US to TX 550 and all additional sensors works according to BidCoS Standard.

13. FCC Information

Contains FCC ID: RNT-TRX916 Changes or modifications not expressly approved in writing by La Crosse Technology may void the users authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: - Reorient or relocate the receiving antenna. - Increase the separation between the equipment and receiver. - Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. - Consult the dealer or an experienced radio/TV technician for help. The internal antenna used for this mobile transmitter must provide a separation distance of at least 7.874 in (20 cm) from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter. DoC Statement This device, trade name La Crosse Technology, model number WS 2-550 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 any interference received, including interference that may cause undesired operation The responsible party for this device compliance is: La Crosse Technology 6A Rue du commerce 67118 GEISPOLSHEIM - FRANCE



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