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Crosse Technology Weather Instruments WS8025CH Sun/Moon Wireless Home Weather Station, Weather Forecaster
With Storm Warning Indicator & Atomic Clock, Cherry
For definitions of the
feature icons, please click any icon.
La Crosse Technology Weather Instruments WS8025CH is a full-featured weather
station that has a wireless indoor outdoor thermometer and
hygrometer, plus a barometer with a bar graph display--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 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).
click image for a larger picture
black with cherry-finished accent columns of real wood, the La
Crosse Technology Weather Instruments WS8025CH
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
American cities. Install one or two optional remote
transmitters, and get outdoor/remote temperature and humidity data from
sets automatically to WWVB radio signal (manual
setting is also possible).
12- or 24-hour time. Hour and minutes are separated by a flashing colon (:) that
display (month and date).
setting with snooze function.
and displays sunrise and sunset times plus moonrise
and moonset times for any of 250 selectable North
sunlight duration for the selected city can be
displayed as an alternative to sunrise/sunset times.
moon phases are displayed throughout each month.
temperature indications are selectable for either °F
of current indoor temperature and relative humidity
with minimum and maximum recordings.
- Indoor comfort-level
icon (smiling or sad face).
pressure tendency indicators.
warning and alarm.
temperature alarm (independently settable for each
remote sensor in use).
display of air pressure history for the past 30 hours
of absolute or relative air pressure in hPa or inHg,
with calibration facility for relative air pressure
of air pressure tendency for the past 2 hours
of current outdoor temperature (in either °F or °C)
and relative humidity with minimum and maximum
recordings for each remote sensor in use.
receive and display information from up to three
outdoor/remote transmitters (one TX4U thermo-hygro included;
additional transmitters are optional and sold
display contrast selectable for 8 different levels.
is powered by three AA (1.5V) alkaline batteries.
transmitter (TX4U) is powered by two AA (1.5V)
has an integral
foldout stand for table/desk/shelf placement; can also
transmitter is wall-mount only.
time signal: WWVB (60 kHz) from Fort Collins, Colorado
- Recommended indoor operating temperature
32° to 122°F (0° to 50°C)
- LCD contrast: 8
user-selectable levels (1 through 8)
moonrise/moonset, and moon phase dates available:
January 1, 2000 through December 31, 2099
- Indoor temperature measuring range:
14.2° to 139.8°F with 0.2°F resolution
(-9.9° to 59.9°C with 0.1°C resolution)
- Outdoor temperature measuring range:
-21.8° to 156.2°F with 0.2°F resolution
(-29.9° to 69.0°C with 0.1°C resolution)
and outdoor relative humidity range:
20% to 95% with 1% resolution
- Absolute: 20.67 to 32.46 inHg (700 to 1099
Relative (adjustable): 28.60 to 30.45 inHg (960 to 1040
Sensitivity setting: 0.06, 0.09, or 0.12 inHg (2, 3, or 4
- 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
- 7.48 inches (19.0cm) wide
- 10.12 inches (25.7cm) high
- 0.86 inch (2.2cm) deep
Transmitter (TX4U) Specifications:
-25° to 158°F (-31.6° to 70.0°C)
-21.8° to 156.2°F with 0.2°F resolution
(-29.9° to 69.0°C with 0.1°C resolution)
20% to 95% with 1% resolution
Temperature: every 5 minutes
Relative humidity: every 5 minutes
interval: every 10 seconds for first 3 minutes, every 1
frequency: 433.92 MHz
range: 80 feet (25 meters) in open space with no interference
1.56 inches (40 mm) wide
4.29 inches (110 mm) high
0.78 inch (20 mm) deep (not including mounting bracket)
2.24 inches (57 mm) in diameter
4.7 inches (120 mm) high
dimensions with rain protector installed and including
2.24 inches (57 mm) wide
4.88 inches (124 mm) high
2.87 inches (73 mm) deep
temperature and humidity are transmitted to the weather station
via an included TX4U remote sensor/transmitter. The
weather 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.
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 weather station's
indoor humidity indicator is an indoor comfort level
indicator with happy and sad face icons.
weather 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.
incredibly accurate radio-controlled atomic clock with
calendar display and alarm (including snooze function)
rounds out the many features of this weather station.
Crosse Technology WS8025CH 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.
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
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 (3200
km) from the WWVB transmitter.
station is medium in size (about 10 inches tall) and
smartly styled in black with cherry-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.
and loaded with features, the WS8025CH 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 station’s
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 WS8025CH
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.
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.
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
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