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La Crosse Technology 404-1220 Instruction Manual page 3

20“ atomic wall clock

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Daylight Saving Time
The National Institute of Standards and Technology and WWVB
encode a special DST "bit" in the WWVB transmission for DST.
Your clock will read this information and automatically advance
the hands one hour in the spring and eleven hours in the fall.
Arizona: If you live in an area that does not recognize DST,
you must press the DST button one time only to turn OFF.
Manual WWVB Time Signal Search
For information about WWVB, visit:
www.nist.gov/pml/div688/grp40/wwvb.cfm
Signal Interference
In some cases, the signal is affected by weather conditions and
electrical interferences, or the location of the clock itself may
result in poor reception. If the clock has not synchronized to the
correct time within a few days of activation, you may need to
move the clock to a different location.
Auto Correction
The clock automatically checks its hands position daily between
3:00 and 4:05 (pm). If hands position is not equal to internal
time, the hands are driven (quick run) to the correct time
again. You will see the hands spin completely around during
this correction. This is normal behavior.
Frequently Asked Questions
Q. How long will the battery last?
A: A good "C" alkaline battery will last over one year. If your
clock is located in an area with little interference where it can
quickly receive a signal the battery can last much longer than
one year.
Q. Can this La Crosse Technology clock be used
outdoors?
A. No. Outdoor use is not recommended for this clock.
www.lacrossetechnology.com/support
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