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La Crosse Technology
Clock with Indoor Thermometer - Aluminum Trim
For definitions of the
feature icons, please click any icon.
The WS6002U-A digital atomic wall clock
displays not only the time, day, and date but also the indoor
temperature. Featuring contemporary styling, the clock has a raised
black display panel and a brushed aluminum background panel. The
background panel is a little darker in color than some brushed
aluminum we've seen, and it looks great behind the black display
Please click image for a larger picture
display panel that stands out 1/2 inch from the contrasting
aluminum background panel gives the WS6003U-A true
3-dimensional appeal. A curved top and bottom add to this
clock's visual interest.
is medium in size (about 8.3 x 8.4 inches) and has large
digital displays for great readability. Hour and minutes
are indicated in extra-bold digits more than 2 inches
tall. The LCD display below the time is about 1 inch tall
and has 3 user-selectable display modes:
date / weekday / indoor temperature.
date / weekday / clock seconds.
date / clock seconds / indoor temperature.
clock on a wall, or extend the clock's integral foldout
stand to use it as a freestanding unit on a table or
Would you prefer this same clock with straight
(horizontal) top and bottom? Please check out the
WS6003U-A on this website.
clock sets automatically to WWVB radio signal (manual
setting is also possible).
or 24-hour time display. Please be aware that, because of
the width of the LCD panel, the first digit 2 cannot be
displayed in 24-hour mode.
display with weekday abbreviations in your choice of three
languages (English, French, Spanish).
display modes for month and date, weekday, clock seconds,
and/or indoor temperature. Month and date are always
indicated, and you can select any two of the other three
parameters for display.
- Time zone
setting (13 available).
identification for U.S. time zone.
saving time ON/OFF option.
temperature display in either °F or °C.
- Powered by
two AA alkaline batteries (not included), with normal life
of about 1 year.
temperature measuring range:
32° to 122°F with 0.2°F resolution
(0° to 50°C with 0.1°C resolution)
Every 10 seconds
8.30 inches (211 mm) wide
8.42 inches (214 mm) high
0.98 inch (25 mm) deep (excluding foldout stand for shelf or
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 La Crosse Technology
WS6002U-A Digital Atomic Clock:
The La Crosse Technology Digital
Atomic Clock 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 La Crosse Technology 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 La Crosse 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
La Crosse 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 once per day at midnight. (If
no signal is detected, the clock performs its WWVB check hourly
until the signal is found.) 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.
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 clock 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, 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
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.