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La Crosse Technology, Ltd.            www.lacrossetechnology.com/support 

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First Quarter and Last Quarter moons occur when the moon is at a 90 degree 

angle to the earth and sun. We see half of the moon illuminated and the other 

half is in shadow. 

 

Dashes, HH.H, LL.L or stuck Indoor Temperature 

 

Explanation: These symbols are error messages indication the indoor sensor is 

outside of its readable range. For indoor readings, this is generally a power related 

issue.  

 

 

Batteries 

may be overpowered or underpowered. Remove batteries from the 

atomic clock.  

 

Press any button 20 times. Leave the atomic clock unpowered for 1-2 hours.  

 

Install fresh Alkaline batteries with correct polarity.  

 

If the indoor temperature is still shows dashes, HH.H or LL.L, the atomic clock 

may need replacement. 

 

Inaccurate Indoor Temperature Reading 

 

Explanation: When the indoor temperature is inaccurate, it is often due to the 

location of the display or overpowered/under powered batteries. You can test the 

accuracy at you home. 

 

Side-by-side test: Bring the remote sensor in the house and place it next to the 

atomic clock for 2 hours.  

 

Compare indoor and remote temperature. The temperature should be within 4 

degrees to be within tolerance.  

 

Look for heat sources such as sunlight, door or window frames or reflected heat 

or cold near the atomic clock. 

 

Set Time Alarm 

 

Hold the ALARM button for 5 seconds to enter the alarm setting mode.  

1.     The alarm hour digit will flash in the time display. 

2.     Press and release the + or - buttons to select the hour.  

3.     Press and release the ALARM button to set the minutes.  

4.     The minute digits will flash. 

5.     Press and release the + or - buttons to adjust the minutes. 

6.     Confirm with the ALARM button and exit. 

 

Activate/Deactivate time alarm 

 

 

Press and release the ALARM button once to show alarm time.  

 

Press and release the ALARM button to activate/deactivate the Alarm.  

 

The bell icon will disappear when the alarm is no longer active. 

 

Snooze Alarm 

 

 

When the alarm sounds, press the LIGHT button to trigger snooze alarm for 10 

minutes.  The snooze icon will flash when the snooze feature is active. 

Summary of Contents for 513-1417v4

Page 1: ...erature Reading 4 Intermittent Remote Temperature 4 Remote Temperature is stuck or HH H LL L 4 Remote sensor drains batteries quickly 5 Remote sensor fell The sensor no longer works 5 Temperature Trend Arrows 5 HI LO Temperature readings 6 Mounting Positioning Remote sensor 6 Position Atomic clock 7 Distance Resistance Interference 7 Atomic clock 8 Power Requirements 8 12 Hour time format 8 Fahren...

Page 2: ...e of RF radio frequency interference from the battery compartment Atomic Clock Factory Restart Explanation The factory restart returns the atomic clock and remote sensor to an out of the box default state and often resolves an issue Factory Restart 1 Remove batteries from remote sensor and atomic clock 2 Press one of the buttons on the atomic clock at least 20 times to clear all memory 3 Verify th...

Page 3: ...omic clock will search for the remote temperature remote sensor for 3 minutes after batteries are installed or when the MINUS button is held for 3 seconds The antenna symbol will flash during reception The temperature display will be dashes If synchronization fails once the antenna will lose one bar If synchronization fails twice the antenna will lose two bars If RF radio frequency reception fails...

Page 4: ...ay come and go occasionally This can be normal in some environments e g moister climates If remote sensor signal is lost please wait 2 4 hours for the signal to reconnect on its own Move the remote sensor to a closer location Distance Resistance can cause loss of remote sensor signal Check Batteries Freezer test Confirm the atomic clock is reading the correct remote sensor not a neighbor s sensor ...

Page 5: ...ot have caused internal damage A fall can shock the remote sensor or the batteries in the remote sensor Batteries that have fallen on a hard surface may be damaged and unable to function properly Complete a Restart with fresh batteries 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 performa...

Page 6: ... cause it to read incorrectly Mounting under an eave or deck rail works well If you choose you can construct a small roof or box for the remote sensor Be sure a box has vents Mount the remote sensor on the North side where to prevent sun from causing incorrect readings Mount at least 6 feet in the air for a strong RF radio frequency signal Do not mount the remote sensor on a metal fence This signi...

Page 7: ...reception Be aware of electrical wires and plumbing within a wall This will interfere with RF radio frequency signal reception Distance Resistance Interference Distance The maximum transmitting range in open air is over 300 feet 91 meters between the remote sensor and the atomic clock This range is in open air with ideal conditions Consider what is in the signal path between the atomic clock and t...

Page 8: ...oon phase is based on the lunar calendar and the year month and date set Most Internet moon phase calculations are based on the lunar calendar Waxing indicates growing or expanding illumination and happens after a new moon Waning indicates decreasing illumination and occurs after a full moon Crescent refers to the moon being less than half illuminated Crescents can be waning or waxing Gibbous desc...

Page 9: ...red batteries You can test the accuracy at you home Side by side test Bring the remote sensor in the house and place it next to the atomic clock for 2 hours Compare indoor and remote temperature The temperature should be within 4 degrees to be within tolerance Look for heat sources such as sunlight door or window frames or reflected heat or cold near the atomic clock Set Time Alarm Hold the ALARM ...

Page 10: ...the or buttons to turn this feature OFF 7 Confirm with the SETTINGS button and select atomic time ON OFF 8 ATOMIC and ON will flash 9 Press and release the or buttons to turn this feature OFF 10 Confirm with the SETTINGS button and select Time Zone 11 ZONE EST will flash 12 Press and release the or buttons to change time zones 13 Confirm with the SETTINGS button and select DST Daylight Saving Time...

Page 11: ...pment 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 take up to 5 nights for the change from Daylight Savings Time to Standard Time and vice versa to occur Check for a WWVB Tower Icon showing on the atomic digital clock The tower icon indicates you have received the WWVB signal...

Page 12: ...teries into the atomic clock Atomic clock is blank No letters numbers or dashed lines Check that the batteries are installed correctly Batteries may be overpowered or underpowered Remove batteries from atomic clock Press any button 20 times Leave the batteries out of the display for 2 hours Insert batteries into the atomic clock Atomic clock drains batteries quickly Test a new set of alkaline batt...

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