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INVENTORY OF CONTENTS
1) WS-8011UM
2) TX6U remote temperature transmitter
3) Instruction manual and warranty card.
ADDITIONAL EQUIPMENT (not included)
1) Two fresh 1.5V AA batteries (for the temperature clock).
2) Two fresh 1.5V AA batteries (for the remote temperature transmitter).
3) Three wall-hanging screws.
4) Appropriate screwdriver for screws.
ABOUT WWVB (Radio Controlled Time)
The NIST (National Institute of Standards and Technology—Time and Frequency
Division) WWVB radio station 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 temperature clock.
However, due to the nature of the Earth’s Ionosphere, reception is very limited during
daylight hours. The temperature 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 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. For more information about WWVB
please see the NIST website at http://www.boulder.nist.gov/timefreq/stations/wwvb.htm
