La Crosse Technology C85183 - Manual (Page 3)

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Do Not Mix Alkaline, Standard, Lithium or Rechargeable Batteries
Troubleshooting
If the atomic alarm clock does not display the indoor temperature after 30 seconds, remove the A/C
power adapter (batteries) and start the setup process again.
Power the Atomic Alarm Clock
The atomic alarm clock can be powered by the 5-volt A/C adapter or batteries.
A/C Power Adapter
Insert enclosed 5-volt a/c power adapter into a wall outlet, then into the atomic alarm clock.
Batteries
1. Slide tab up and pull out to remove battery cover.
2. Install two NEW AAA batteries (included) according to the polarity markings.
Do Not Mix Old and New Batteries
Do Not Mix Alkaline, Lithium, Standard or Rechargeable Batteries
If the atomic alarm clock does not display indoor temperature after 60 seconds, remove adapter and
batteries and wait for at least 60 seconds before repeating the setup process.
Time
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 atomic alarm clock. However
, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours.
The WWVB reception icon with full signal strength will appear on screen if the reception of
atomic time is successful.
When powered up, the Atomic Alarm Clock will automatically try to receive the WWVB signal every
three hours, for example: 0:00, 3:00, 6:00......18:00, 21:00, but if at any of the above times it receives
the signal, it won’t search again until next day at UTC 7:00, 8:00, 9:00. 10:00, 11:00. When it
successfully receives a time update at UTC 7:00, 8:00, 9:00. 10:00, or 11:00, it will not look for an
update again until the next day.
In normal mode, push the - button for three seconds to enter manual searching for the signal.
In reception mode, push the - button for three seconds to exit searching for the atomic signal.
Note: During WWVB reception, all buttons will work. When in time set or alarm set mode, the WWVB
search will stop. When alarm rings, it will stop the WWVB search.