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Crosse Technology WS-7390TWC Wireless 433 MHz Weather Station with Atomic
|For definitions of the
feature icons, please click any icon.
La Crosse Technology WS-7390TWC is a version of the the WS-7390U
that bears the logo of and has been available from The Weather Channel®.
This wireless weather station displays indoor and outdoor temperature
plus indoor and outdoor relative humidity. It also has a moon-phase
display with tide indicator and a weather-forecasting feature with three
forecast icons. Outdoor temperature and humidity are transmitted to
the station via the included TX4U remote sensor/transmitter. The station
can actually receive signals from a total of three remote sensors (additional
remotes are optional and sold separately).
To Enlarge Image
as a silver bulb-type thermometer in a dark blue plastic case, the wall-mount
plenty of convenient features, including an atomic clock. In addition
to day/date/time and moon phase with tide indicator, the station displays
indoor temperature and humidity, outdoor temperature and humidity (via
an included remote transmitter), forecasting icons, and indoor comfort
level. Install one or two optional remote transmitters, and get temperature
and humidity data from additional locations.
18 inches tall and over 6 inches wide, the station is dark blue
and silver in color and is intended for wall mounting only. Its
LCD displays are large for easy reading,
and the LCD display contrast can be adjusted for any of 8 different
station's incredibly accurate radio-controlled atomic clock has
day/date/time displays. Time can be displayed as 12-hour or 24-hour,
and the clock can be optioned to automatically adjust for daylight
station's weather-forecasting feature senses barometric pressure
over time and adjusts the indicator icons to provide accurate
forecasts based on pressure trends. Another clever feature of
the WS-7390TWC is an indoor comfort level indicator with happy
and sad face icons.
station keeps a record of the minimum and maximum indoor and outdoor
temperatures and humidity it has recorded, and these are available
at the push of a button.
only will the station operate with up to three remote sensor/transmitters,
three different remotes are available. The TX3U reports outdoor
temperature only. The TX4U (the one included with the station)
reports both outdoor temperature and humidity. The TX3UP senses
temperature via a probe on a 10-foot (3-meter) wire for use in
pools, spas, soil, etc.
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 (3200km)
from the WWVB transmitter.
in size with good looks and many convenient features, the WS-7390TWC
is ideal for larger rooms and offices. (If you would prefer a
black plastic case instead of dark blue, please check out the
WS-7390U. Or, if you'd like a case trimmed in real wood, have
a look at the three WS-7391U models instead.)
- Clock sets
automatically to WWVB radio signal (manual setting is also possible).
- 12/24 hour
time display (hour, minute, second).
- Date (calendar)
- Moon phase
display with tide indicator.
- Station displays
indoor and outdoor temperature and relative humidity with minimum
and maximum recordings and time and date of recording (resettable).
indication selectable for either °F or °C.
- Three weather-forecasting
- Weather tendency
- Indoor comfort
level indicator with happy and sad face icons.
- One outdoor
temperature and humidity transmitter included; additional transmitters
are optional and sold separately.
- Can receive
and display information from up to three outdoor transmitters.
- LCD display
contrast selectable for 8 different levels.
- Station powered
by two AA alkaline batteries (not included), with average life
of about 1 year.
- Remote transmitter
(TX4U) powered by two AA alkaline batteries (not included),
with average life of about 1 year.
time signal: WWVB
32° to 122°F (0° to 50°C)
- Indoor temperature
32° to 140°F with 0.2° resolution and 2° accuracy
(0° to 60°C with 0.1° resolution and 1° accuracy)
- Outdoor temperature
-21.8° to 139.8°F with 0.2° resolution and 2° accuracy
(-29.9° to 59.9°C with 0.1° resolution and 1° accuracy)
- Indoor and
outdoor relative humidity range:
20% to 95% with 1% resolution and 3% accuracy
- Indoor checking
Indoor temperature: every 10 seconds
Indoor relative humidity: every 1 minute
- Outdoor checking
interval (remote sensor):
Outdoor temperature: every 1 minute
Outdoor relative humidity: every 1 minute
- Outdoor temperature
and humidity reception interval (indoor station): 5 minutes
- Station dimensions:
6.41 inches (16.3cm) wide
17.71 inches (45.0cm) high
1.22 inches (3.1cm) deep
Remote Thermo-Hygro Transmitter
- Remote transmission
of outdoor temperature and humidity to station via 433 MHz signals
-25° to 158°F (-31.6° to 70.0°C)
-21.8° to 156.2°F with 0.2°F resolution
(-29.9° to 59.9°C with 0.1°C resolution)
- Relative humidity
20% to 95% with 1% resolution
- Checking intervals:
Temperature: every 5 minutes
Relative humidity: every 5 minutes
interval: every 10 seconds for first 3 minutes, every 1 minute
frequency: 433.92 MHz
range: 80 feet (25m) in open space with no interference
- Wall mounting
- Power source:
two AA (1.5V) alkaline batteries (not included)
- Remote transmitter
1.6 inches (4.0cm) wide
4.3 inches (11.0cm) high
0.8 inch (2.0cm) deep (not including mounting bracket)
- Rain protector
2.24 inches (5.7cm) in diameter
4.7 inches (12cm) high
- Remote transmitter
dimensions with rain protector installed and including mounting
2.24 inches (5.7cm) wide
4.88 inches (12.4cm) high
2.87 inches (7.3cm) deep
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.
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
The atomic clock integral to the
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
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.
This unit has atomic clock functionality. The atomic 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 saving
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 an adequate signal. Under these conditions,
the clock may still synchronize occasionally when weather conditions are
ideal, or may need to be set manually.
|La Crosse TX3UP Remote Sensor with Display and Waterproof Probe|
The La Crosse Technology TX3UP temperature sender has a waterproof probe and a temperature display on the sender. The La Crosse Technology TX3UP may be used to monitor soil temperature, pool temperature, hot tub temperature, freezer or refrigerator temperature, or may be placed indoors with the probe routed outdoors through a window for extreme climates. The TX3UP uses 2 AAA batteries.
|La Crosse TX6U Remote Sensor/Transmitter|
The La Crosse TX6U is the more common remote temperature only sensor for the La Crosse Technology weather instruments. The La Crosse Technology TX6U does not have a display of it’s own. The TX6U uses 2 AA batteries, and is excellent for use for extended periods of operation in cold temperatures. In harsh climates, the alkaline batteries in the TX6U may be replaced with Lithium batteries for extended low temperature operation.
|La Crosse Technology TX7U Remote Thermo-Hygro Sensor/Transmitter|
The TX7U Temperature and Humidity Sensor reports the outdoor temperature and humidity (or any other location whose temperature and humidity you wish to know) to the station. This remote sensor features its own LCD display for local viewing of the temperature in °F and the relative humidity in percent. The remote has a water-resistant case, but it must not be installed in a location where rain can fall directly on it.
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