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Model: 308-2316 www.lacrossetechnology.com/support Page | 19
The NIST radio station, WWVB, is located in Ft. Collins, Colorado and transmits the exact time
signal continuously throughout the United States at 60 kHz. The signal can be received up to
2,000 miles away through the internal antenna in the atomic clock. However, due to the nature
of the Earth’s Ionosphere, reception is very limited during daylight hours. The atomic clock will
search for a signal every night when reception is best. The WWVB radio station derives its signal
from the NIST atomic clock in Boulder, Colorado. A team of atomic physicists continually
measures every second of every day to an accuracy of ten billionths of a second a day. This
atomic clock regulates the WWVB transmitter.
For information about WWVB visit:
www.nist.gov/pml/div688/grp40/wwvb.cfm
Specifications
Indoor:
Temperature Range:
32℉ to + 140℉ (0 C to 60 C) OFL outside this range
Humidity Range:
10%-99% (RH) OFL outside this range
Interval:
About every 48 seconds
Air pressure range:
300-1100hPa (8.85-32.5inHg)
Alarm interval:
120 seconds
Outdoor:
Temperature Range:
-40°F to 149°F (-40°C to 65°C) OFL outside this range
Alkaline Batteries:
-20°F to 149°F (-28.8°C to 65°C)
Lithium Batteries:
-40°F to 149°F (-40°C to 65°C)
NOTE:
Temperatures below - 20°F (-28.8°C) require Lithium batteries in
the outdoor sensor.
Humidity Range:
10%-99% (RH) OFL outside this range
Distance:
Over 600 ft. (183 meters) RF 433MHz (open air)
Interval:
About every 48 seconds
Rain volume display:
0-393.66 inches (0-9999mm) OFL outside this range
Wind speed:
0-112 mph OFL outside this range
Waterproof level:
IPX3
Power:
Weather station
3-AA, IEC, LR6 batteries (not included)
TX231TH
Thermo-hygro Sensor:
2-AA, IEC, LR6 batteries (not included)
Battery Life:
Weather station
Battery life is over 12 months when using reputable battery brands
TX231TH
Thermo-hygro Sensor:
Battery life is over 24 months when using reputable battery brands
for both Alkaline and Lithium batteries
Dimensions:
Weather station:
5.88”W x 6.31”H x 1.40”D
TX231TH
Thermo-hygro Sensor:
2.81" W x 8.02"H x 2.81"D (71.5 x 203.6 x 71.5mm)
TX231W Wind Sensor:
5.67" W x 2.93"H x 6.28"D (144 x 74.5 x 159.5mm)
TX231R Rain Sensor:
2.81" W x 8.02"H x 2.81"D (150.4 x 95.1 x 60.1mm)
WWVB
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