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La Crosse Technology
WS8015U Sun/Moon Wireless 433 MHz Weather Station with Atomic Clock
|For definitions of
the feature icons, please click any icon.
|The La Crosse
Technology WS8015U Sun/Moon Wireless Weather Station with atomic clock
is a full-featured weather station that displays indoor temperature and
humidity, outdoor temperature and humidity, and barometric pressure--and
this is only the beginning. The station also displays the day's sunrise
and sunset times and moonrise and moonset times for any of 245 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).
For a larger picture,
styled in silver and black, the WS8015U is a near-professional weather station with an atomic
clock. The unit provides time/day/date, indoor and outdoor temperature
and humidity, barometric pressure (with history graphs), and forecasting
information (including a storm warning). Also provided are sunrise and
sunset times, moonrise and moonset times, length of daylight, and moon
phases. Install one or two optional remote transmitters, and get outdoor
temperature and humidity data from additional locations.
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.
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.
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.
accurate radio-controlled atomic clock with calendar display and alarm
(including snooze function) rounds out the many features of this station.
The WS-8015U 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, three different
transmitters are available. The TX4U included with the station reports
both outdoor temperature and humidity. The TX3U reports and displays outdoor
temperature only. The TX3UP senses temperature via a probe on a 10-foot
(3m) wire for use in pools, spas, soil, etc., and also has a display for
The station's atomic 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 (3200km) from the WWVB transmitter.
in silver and black, this station is medium in size at about 10 inches
tall. 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.
and loaded with features, the WS-8015U 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.
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 stationís
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 atomic clock integral to the WS-8015U maintains its incredible accuracy by automatically tuning into
the WWVB radio signal. The built-in antenna ensures reliable
signal reception up to 2000 miles (3200 km) 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 saving 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.
If the order
button is there, but the shopping cart page indicates that there
are no units available, then we are temporarily out of stock.
The item should be available in a day or two. Our
inventory control system tries it's best to keep us from
allowing the sale of something we don't have on the shelf.
If there is no
order button, most likely there are bigger problems with
availability. We may be out of stock for more than a few
For shipping time estimates, please see the Fedex web site at www.fedex.com.
Your package will be shipped from zip code 60544. Keep in mind, Fedex travel days do not include
weekends or holidays.