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La Crosse Technology, Ltd  

Page 2 

 

storage. However, the environment the batteries reside in for the 10 years can deplete 

the power. 

 

 

We suggest name brand Alkaline batteries for 

indoor displays

.  

 

A minimum voltage of 1.48V for each battery is necessary for proper performance.   

 

Use batteries dated at least six years in advance of the current year. Batteries dated 

earlier than six years from now may still work, but may be unstable in performance.   

 

Good name brand batteries make less noise, which reduces the chance of RF (radio 

frequency) interference from the battery compartment.  

 

Digital Clock Factory Restart 

 

Explanation:

 The factory restart returns the clock and outdoor sensor to an “out-of-

the-box” default state and often resolves an issue.  

  

Factory Restart: 

1.

 

Remove all power from clock.  

2.

 

Press one of the buttons on the clock at least 20 times to clear all memory.  

3.

 

Verify that the clock is blank before proceeding (there may be lines painted on the 

screen that will show when there is no power). 

4.

 

Leave without power for 15 minutes

 (very important). 

5.

 

Insert fresh batteries into the clock. 

 

Display Indoor Temperature or Seconds 

 

 

Press the MODE button to toggle between indoor temperature, or seconds. 

 

This is a normal feature of the clock.

 

 

Fahrenheit/Celsius 

 

 

Use th

program menu

 to switch from Fahrenheit to Celsius. 

 

12-Hour Time Format 

 

 

Use th

program menu

 to switch from select 12-hour or 24-hour time format.. 

 

Supported Time Zones 

 

 

This clock has 7 Time Zones: 

AST

=Atlantic, 

EST

= Eastern, 

CST

= Central,  

MST

= Mountain, 

PST

= Pacific, 

AKT

= Alaska, 

HAT

=Hawaiian The digital clock 

works in North America.  

 

Outside of North America, the digital clock will not receive a WWVB signal, but will 

keep time like a quartz clock. 

 

Dashes, HHH, LLL or Stuck Indoor Temperature 

 

Summary of Contents for M78786

Page 1: ...g Time 3 Manually Set Time Date Program Menu 3 No WWVB Tower Icon 5 Set Time Alarm 5 Activate Deactivate Time Alarm 5 Snooze Alarm 5 Indoor Comfort Statement 5 Digital clock has distorted or frozen display 5 Digital clock is blank No letters numbers or dashed lines 6 Day of the week is incorrect 6 Digital clock drains batteries quickly 6 Digital clock has missing segments 6 Batteries Explanation M...

Page 2: ...er from clock 2 Press one of the buttons on the clock at least 20 times to clear all memory 3 Verify that the clock is blank before proceeding there may be lines painted on the screen that will show when there is no power 4 Leave without power for 15 minutes very important 5 Insert fresh batteries into the clock Display Indoor Temperature or Seconds Press the MODE button to toggle between indoor t...

Page 3: ...ndicator is correct for your location most areas observe DST so this should be ON Adjust the DST indicator in the Program Menu Large buildings metal roofed buildings and buildings or rooms full of electrical and or radio equipment make it difficult to receive the WWVB time signal Daylight Saving Time Dependent on your location position of the clock in your home and atmospheric interference it may ...

Page 4: ...KT Alaska HAT Hawaiian 7 Press the MODE button to confirm and select Daylight Savings Time ON OFF 8 DST ON will show Press the or button to turn that OFF if you do not observe Daylight Saving Time 9 Press the MODE button to confirm and select 12 hour or 24 hour time format 10 FORMAT 12H will show Press the or button to select 24H 11 Press the MODE button to confirm and select the hour 12 HOUR will...

Page 5: ...arm The alarm icon clock will show when active Snooze Alarm When the alarm sounds Press and release the SNOOZE button to silence the alarm for 10 minutes The snooze icon Zz will flash Press and release any button except SNOOZE to silence the alarm for 24 hours This is a crescendo alarm It will sound for 2 minutes then shut off if no buttons are Press and released Indoor Comfort Statement The indoo...

Page 6: ... year setting in the program menu The day of the week sets automatically based on the setting of the year month and date Digital clock drains batteries quickly Test a new set of alkaline batteries Write down the date of installation and the voltage of the batteries When the batteries fail please note the date and voltage again This is helpful in determining the problem Check for leaking batteries ...

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