La Crosse Technology WS8025OAK Oak Finish Sun/Moon Wireless Weather Station & Forecaster with Atomic Clock



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La Crosse Technology Weather Instruments WS8025OAK Sun/Moon Weather Station, Weather Forecaster With Storm Warning Indicator & Atomic Clock, Oak Finish

Wireless Thermometer Dispays Remote Temperature Radio Controlled Atomic clock Digital Thermometer Records and Displays Minimum and Maximum Temperature Atomic Clock Displays Time Atomic Clock Displays Moon Phase Digital Thermometer Selectable for Fahrenheit or Celsius Atomic Clock Displays Sunrise and Sunset Times & Sunlight Duration Barometer Displays Barometric Pressure History Bar Graph Indoor Outdoor Thermometer Displays Indoor Temperature
Hygrometer Displays Outdoor Humidity Wireless Indoor Outdoor Thermometer Displays Outdoor Temperature Weather Station Displays Weather Forecast Atomic Clock Displays Date Hygrometer Displays Indoor Humidity Barometer Displays Barometric Pressure Atomic Clock Displays Moonrise and Moonset Times Atomic Clock Displays Day Of Week  
For definitions of the feature icons, please click any icon. 

The La Crosse Technology Weather Instruments WS8025OAK is a full-featured weather station that has a wireless indoor outdoor thermometer, indoor and outdoor hygrometer, a barometer with a bar graph history display--and this is only the beginning. The weather station also displays the day's sunrise and sunset times and moonrise and moonset times for any of 250 North American cities, plus phases of the moon. Press a button to alternate between sunrise and sunset times and sunlight duration (in hours and minutes).

La Crosse Technology Weather Instruments WS8025OAK Weather Station   
Please click image for a larger picture

Styled in black with oak-finished accent columns of real wood, the La Crosse Technology Weather Instruments WS8025OAK is a near-professional home weather station with a radio controlled atomic clock. This station provides time/day/date, indoor and outdoor temperature and humidity, barometric pressure (with history graphs), outdoor temperature alarms, and forecasting information (including a storm warning). Also provided are sunrise and sunset times, moonrise and moonset times, length of daylight, and moon phases for any of 250 selectable North American cities. Install one or two optional remote transmitters, and get outdoor/remote temperature and humidity data from additional locations.

  • Atomic clock sets automatically to WWVB radio signal (manual setting is also possible).
  • User-selectable 12- or 24-hour time. Hour and minutes are separated by a flashing colon (:) that indicates seconds.
  • Calendar display (month and date).
  • Alarm setting with snooze function.
  • Calculates and displays sunrise and sunset times plus moonrise and moonset times for any of 250 selectable North American cities.
  • Daily sunlight duration for the selected city can be displayed as an alternative to sunrise/sunset times.
  • 12 moon phases are displayed throughout each month.
  • All temperature indications are selectable for either F or C.
  • Display of current indoor temperature and relative humidity with minimum and maximum recordings.
  • Indoor comfort-level icon (smiling or sad face).
  • Three weather-forecasting icons.
  • Barometric pressure tendency indicators.
  • Storm warning and alarm.
  • Outdoor temperature alarm (independently settable for each remote sensor in use).
  • Graphic display of air pressure history for the past 30 hours
  • Display of absolute or relative air pressure in hPa or inHg, with calibration facility for relative air pressure
  • Display of air pressure tendency for the past 2 hours
  • Display of current outdoor temperature (in either F or C) and relative humidity with minimum and maximum recordings for each remote sensor in use.
  • Can receive and display information from up to three outdoor/remote transmitters (one TX4U thermo-hygro included; additional transmitters are optional and sold separately).
  • LCD display contrast selectable for 8 different levels.
  • Low-battery indication.
  • Station is powered by three AA (1.5V) alkaline batteries.
  • Remote transmitter (TX4U) is powered by two AA (1.5V) alkaline batteries.
  • Station has an integral foldout stand for table/desk/shelf placement; can also be wall-mounted.
  • Remote transmitter is wall-mount only.

Station Specifications:

  • Radio-controlled time signal: WWVB (60 kHz) from Fort Collins, Colorado
  • Recommended indoor operating temperature for station:
    32 to 122F (0 to 50C)
  • LCD contrast: 8 user-selectable levels (1 through 8)
  • Sunrise/sunset, moonrise/moonset, and moon phase dates available: January 1, 2000 through December 31, 2099
  • Indoor temperature measuring range:
    14.2 to 139.8F with 0.2F resolution
    (-9.9 to 59.9C with 0.1C resolution)
  • Outdoor temperature measuring range:
    -21.8 to 156.2F with 0.2F resolution
    (-29.9 to 69.0C with 0.1C resolution)
  • Indoor and outdoor relative humidity range:
    20% to 95% with 1% resolution
  • Absolute: 20.67 to 32.46 inHg (700 to 1099 hPa)
  • Relative (adjustable): 28.60 to 30.45 inHg (960 to 1040 hPa)
  • Sensitivity setting: 0.06, 0.09, or 0.12 inHg (2, 3, or 4 hPa)
  • Storm warning (pressure drop) setting: 0.09 to 0.27 inHg in 0.03 inHg increments (3 to 9 hPa in 1 hPa increments)
  • Air pressure history: for the past 30 hours at -30, -24, -18, -12, -9, -6, -3, -1, and 0 hours
  • Indoor temperature: every 15 seconds
  • Indoor relative humidity: every 20 seconds
  • Outdoor temperature: every 5 minutes
  • Outdoor relative humidity: every 5 minutes
  • Outdoor temperature: every 1 minute
  • Outdoor humidity: every 1 minute

Station Dimensions:

  • 7.48 inches (19.0cm) wide
  • 10.12 inches (25.7cm) high
  • 0.86 inch (2.2cm) deep

Remote Temperature Transmitter (TX4U) Specifications:

  • Recommended operating temperature:
    -25 to 158F (-31.6 to 70.0C)
  • Temperature measuring range:
    -21.8 to 156.2F with 0.2F resolution
    (-29.9 to 69.0C with 0.1C resolution)
  • Relative humidity range:
    20% to 95% with 1% resolution
  • Checking intervals:
    Temperature: every 5 minutes
    Relative humidity: every 5 minutes
  • Transmission interval: every 10 seconds for first 3 minutes, every 1 minute thereafter
  • Transmission frequency: 433.92 MHz
  • Transmission range: 80 feet (25 meters) in open space with no interference
  • Transmitter dimensions:
    1.56 inches (40 mm) wide
    4.29 inches (110 mm) high
    0.78 inch (20 mm) deep (not including mounting bracket)
  • Rain protector dimensions:
    2.24 inches (57 mm) in diameter
    4.7 inches (120 mm) high
  • Transmitter dimensions with rain protector installed and including mounting bracket:
    2.24 inches (57 mm) wide
    4.88 inches (124 mm) high
    2.87 inches (73 mm) deep

Outdoor temperature and humidity are transmitted to the station via an included TX4U remote sensor/transmitter. The station can actually receive signals from a total of three remote transmitters. Additional transmitters (described below) are optional and sold separately. An outdoor temperature alarm can be set at the station for each remote transmitter in use.

The station keeps a record of the minimum and maximum indoor and outdoor temperatures and humidity it has recorded. Indoor minimum and maximum readings are available at the push of a button. Outdoor minimum and maximum readings are displayed along with the current readings. A clever feature that works in conjunction with the station's indoor humidity indicator is an indoor comfort level indicator with happy and sad face icons. 

The station also has a weather-forecasting feature with three indicator icons, a 30-hour air-pressure history bar graph, and an display of air-pressure changes over the past 2 hours. The weather-forecasting feature senses barometric pressure over time and adjusts the indicator icons to provide accurate forecasts based on pressure trends. A storm warning alarm is issued if air pressure drops rapidly over a 6-hour period. 

An incredibly accurate radio-controlled atomic clock with calendar display and alarm (including snooze function) rounds out the many features of this station.

The La Crosse Technology WS8025OAK weather station has a wide variety of programmable functions. For example, barometric pressure can be displayed as absolute or relative in either hPa (hecto Pascals) or inHg (inches of mercury). The outdoor temperature alarms and the amount of pressure drop that triggers the storm warning alarm can be set at the station. Temperatures can be displayed in F or C. Time can be displayed as 12-hour or 24-hour, and the clock can be optioned to automatically adjust for daylight saving time. Even the LCD display contrast can be adjusted for any of 8 different levels.

Not only will the station operate with up to three remote transmitters, four different transmitters are available. The TX6U reports remote temperature, and has no display of its own.  The TX3U reports remote temperature, and has an LCD display of its own. The TX4U (the one included with the station) reports both outdoor temperature and humidity. The TX3UP senses remote temperature via a probe for use in pools, spas, etc., and has an LCD display of its own.

The station's clock calibrates itself to the world's most accurate clock every night by receiving WWVB radio transmissions. These transmissions contain time information from the U.S. atomic clock source, operated by the U.S. Commerce Department near Boulder, Colorado. The built-in antenna ensures reliable signal reception up to 2000 miles (3200 km) from the WWVB transmitter.

The station is medium in size (about 10 inches tall) and smartly styled in black with oak-finished accent columns of real wood. Its main displays are large for easy reading. An integral folding stand allows the station to be used as a freestanding unit, or it can mounted on a wall.

Great-looking and loaded with features, the WS8025OAK is the next best thing to a full-fledged professional weather station. If you're serious about your weather information, this station just may be the perfect choice.

Radio-controlled Time:

The NIST (National Institute of Standards and Technology, Time and Frequency Division) maintains a radio station, WWVB, in Ft. Collins, Colorado. The WWVB radio station derives its signal from the NIST atomic clock in Boulder, Colorado. A team of atomic physicists is continually measuring every second of every day, to an accuracy of ten billionths of a second per day. These physicists have created an international standard, measuring a second as 9,192,631,770 vibrations of a Cesium-133 atom in a vacuum.

WWVB (the stations identification just like any other radio station) continuously broadcasts time and frequency signals at 60 kHz. The carrier frequency provides a stable frequency reference traceable to the national standard. There are no voice announcements on the station, but a time code is synchronized with the 60 kHz carrier and is broadcast continuously at a rate of 1 bit per second using pulse width modulation. The time code contains the year, day of year, hour, minute, second, and flags that indicate the status of Daylight Saving Time, leap years, and leap seconds.

The Integral Atomic Clock:

The atomic clock integral to the WS8025OAK weather station maintains its incredible accuracy by automatically tuning into the WWVB radio signal. The built-in antenna ensures reliable signal reception up to 2000 miles (3200km) from the WWVB transmitter. As a result, the clock will calibrate to the atomic clock not only throughout the mainland U.S. but also in much of Canada. You need only insert the batteries, wait until the signal is received, and program the desired additional settings. In locations outside of WWVB range, the clock can be manually set and will provide the high degree of accuracy of any quality quartz clock.

In a nutshell, here's how the the atomic clock works: The clock's antenna is specifically tuned for optimal reception of the 60 kHz time signal. The time signal received on the antenna is demodulated by an onboard receiver, which sends the information to the clock's CMOS microprocessor for decoding. Once your clock has automatically set its time for the first time, it ensures continuing accuracy by automatically tuning into the WWVB radio signal between midnight and 6:00 a.m. As long as your clock is kept within transmitter range, it will continue to display the absolutely precise time, automatically adjusting for summer time/winter time changeovers if the daylight savings time option is ON. Should you move your clock out of transmitter range for an extended period of time, the clock will continue to operate as a highly accurate quartz-controlled clock. Upon re-entering the transmitter range, your clock will correct itself again to the precise WWVB time signal.

La Crosse Technology Weather Instruments TX4U Remote

La Crosse Technology Weather Instruments TX6U Remote

La Crosse Technology Weather Instruments TX3U Remote

La Crosse Technology Weather Instruments TX3UP Remote

One TX4U comes with the unit.

The TX6U, TX3U and TX3UP may also be used with this unit, up to a total of 3 remotes.

Note: This unit has atomic clock functionality.  The clock can receive time broadcasts from the U.S. Atomic clock transmitter in Colorado, and synchronize itself to the U.S. Atomic clock every night.  As long as the signal is strong where the unit is located, the clock will maintain accuracy to a fraction of a second, and reset itself for daylight savings time (unless you choose to disable the DST function).  However, if the clock is located where the signal is poor, due to metal in the construction of your building blocking the signal, or due to electrical interference from nearby electrical appliances or computers, then the clock may not always receive adequate signal.  Under these conditions, the clock may still synchronize occasionally, when weather conditions are ideal, may need to be relocated, or may need to be set manually.    
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