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Model: WT-3129B   www.lacrossetechnology.com/support          

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Model:

 WT-3129B 

Instruction Manual 

DC: 

072115

 

12” Atomic Wall Clock 

 

Get Started 

 

Step 1: 

Slide the switch to select a time zone. 

Step 2:

 Insert 1 fresh AA, Alkaline battery according to the  

             polarity marked on the case. 

Step 3:

 For the best reception, please place clock on a wall that  

             faces Ft. Collins, Colorado. 

During the night, your clock  

             will automatically set itself. 

 

 

When the battery is installed, the hands will move to the 12:00 
position and search for the radio signal.  

 

If the radio signal is not received in the first 10 minutes, 

the 

clock will start running from the 12:00 position

 and will 

continue to run.   

 

Do not attempt to reset the hands manually even though the 
time on the clock is incorrect.  The clock is synchronizing to 
the WWVB signal and once the radio signal is decoded, the 
hands will automatically adjust to the correct time. This may 
take up to 5 nights if there is atmospheric interference. 

 
 

Reset:

 If the clock does not respond to the various function 

modes, press the RESET button on the movement case. 
 
 

 

Summary of Contents for WT-3129B

Page 1: ...y is installed the hands will move to the 12 00 position and search for the radio signal If the radio signal is not received in the first 10 minutes the clock will start running from the 12 00 position and will continue to run Do not attempt to reset the hands manually even though the time on the clock is incorrect The clock is synchronizing to the WWVB signal and once the radio signal is decoded ...

Page 2: ... clock will not be in use for an extended period Manual Set Time On rare occasions the clock may not be able to utilize the radio controlled function because of the strength of the signal or the geographic location In this case the clock can be set manually and used as a regular quartz wall clock Note Allow up to five nights for the clock to receive the WWVB signal before manually setting the time...

Page 3: ...ered or over powered 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 If you live in an area that does not recognize DST you must slide the DST switch OFF To reactivate the DST program...

Page 4: ...line Standard Lithium or Rechargeable Batteries Always purchase the correct size and grade of battery suitable for intended use Replace all batteries of a set at the same time Clean the battery contacts and also those of the device prior to battery installation Ensure the batteries are installed with correct polarity and Remove batteries from clock which is not to be used for an extended period of...

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