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USB Charge Port
Charge a smart phone, camera or other devices when the forecast station is plugged into a power outlet
with the included 5V AC adapter.
Note: This is a power-output charging port. It does not supply power to the projection alarm.
Connect your external device’s USB charging cable (not included) to the
USB charging port.
Charging times will vary.
USB Power Output: 0.5A maximum current. Charge 0.5A devices or
devices that are self-regulating.
Note: Some USB cables are for data transfer only and cannot be used for
charging. Make sure that the USB cable you use will charge your device. Most
USB cables included with mobile devices will work for charging.
ATOMIC SIGNAL SEARCH:
The LCD backlight, projection and USB charging port will momentarily turn off
while the station searches for the atomic signal. After the initial search, this
station will only search for the atomic signal after midnight.
Temperature Trend Icons
The indoor and outdoor temperature trend indicators are updated every 30 minutes. These trends
represent temperature changes over the past three hours.
Temperature rose more than 2°F /1°C in the past three hours
Temperature has not changed more than 2°F /1°C in the past three hours
Temperature fell more than 2°F /1°C in the past three hours
The temperature trend indicators are shown next to the indoor temperature and outdoor temperature
readings.
Outdoor Temperature Flashing
Low battery icon present: Change batteries in the transmitter, and then hold the CH button until
the station beeps to search for the outdoor transmitter again.
End of Transmission Range: Move the transmitter closer to the display. Avoid obstructions in the
signal path. Keep transmitter and display away from electronics.
WWVB Radio-controlled Time
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 Projection Alarm. However, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours. The Projection Alarm 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 physicists continually measures every second of every day to an
accuracy of ten billionths of a second a 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. This atomic clock
regulates the WWVB transmitter.
WWVB Reception Icon
The icon with full signal strength will appear on screen in front of the date when the
reception of atomic time is successful.
The tower icon will show solid when the display has received the WWVB signal.
No tower icon displayed. The display was unable to receive a signal at this time.
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