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Manual 

Introduction 

The Atomic Digital Clock with Weather Forecast offers radio-controlled time, pressure history, 

weather forecast, and indoor and outdoor temperature on one easy to read display.

512A-811 and 512B-811 

Atomic Digital Clock with Weather Forecast

 Time 

  Alarm icon 

  Outdoor Temperature 

WWVB              Snooze icon 
Reception

Barometric              Date               Indoor 
Pressure                                        Temperature 
History 

Forecast icon 

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FEATURES: 

x

Four digit time display (3 inches high) 

x

Atomic time and date with manual set option 

x

Automatically updates for Daylight Saving Time (on/off option) 

x

Choose from 5 languages (English, German, French, Dutch, Spanish). 

x

Choose from 4 Time Zones (Eastern, Central, Mountain, Pacific). 

x

12-hour or 24-hour selectable time 

x

18-hour pressure history graph. 

x

Forecast icons: sunny, partly cloudy, cloudy, rainy and stormy. 

x

Daily Alarm

x

Perpetual calendar. 

x

Indoor temperature (°F or °C) 

x

Outdoor temperature (°F or °C) 

x

Can read up to 3 outdoor transmitters 

x

Wall hanging or free standing  

x

Low battery indicator for receiver and transmitter 

x

100 foot wireless transmission range (open air) 

SET UP:

x

 

Remove the screws and the battery cover from the back of the transmitter with a small 
screwdriver. 

(see install batteries in transmitter).

x

 

Set the transmitter to Channel 1.   

x

NOTE

: if you have additional transmitters set them to channel 2 and channel 3 respectively. 

x

 

Insert fresh alkaline batteries into the transmitter, observing the correct polarity (see marking 
inside battery compartment). Keep the transmitter 5-10 feet from the atomic clock. 

x

 

Select Fahrenheit or Celsius for the transmitter display. 

x

 

Insert batteries into the atomic clock, observing the correct polarity 

(see install batteries 

into the atomic clock).

 Once the batteries are in place, all segments of the LCD will light up 

briefly. The time will be displayed, as 12:00 and the outdoor temperature area will flash, 
searching for the temperature transmitter(s). 

x

 

After the batteries are inserted in the clock, press the TX button on the back of the 
transmitter to send a signal to the clock.   

x

 

Within 3 minutes the outdoor temperature should be displayed on the atomic clock. If 
temperature does not show after 3 minutes, remove the batteries from both units for 60 
seconds and start again from the beginning. 

Summary of Contents for 512A-811

Page 1: ...r x 100 foot wireless transmission range open air SET UP x Remove the screws and the battery cover from the back of the transmitter with a small screwdriver see install batteries in transmitter x Set the transmitter to Channel 1 x NOTE if you have additional transmitters set them to channel 2 and channel 3 respectively x Insert fresh alkaline batteries into the transmitter observing the correct po...

Page 2: ...Selection C F Selection Battery Cover TX Button Battery Compartment 4 displayed as 12 00 and the outdoor temperature area will flash searching for the temperature transmitter s x After the batteries are inserted in the clock press the TX button on the back of the transmitter to send a signal to the clock x Within 3 minutes the outdoor temperature should be displayed on the atomic clock If temperat...

Page 3: ...n screen if the reception of atomic time is successful The atomic clock will have a daily synchronization at 02 03 and 03 03 everyday Each reception cycle is minimum 2 5 minutes and maximum 10 minutes FUNCTION BUTTONS 6 Press and Release Functions Hold 3 5 seconds Zz Activates snooze when alarm sounds CH Select CH 1 2 3 or auto scroll Search for transmitter SET Set Clock AL View alarm time Set Ala...

Page 4: ...loss caused by an incorrect forecast SET ALARM x ALARM HOUR Press and hold AL button to enter alarm time setting mode The Alarm Hour will flash Use the PLUS or MINUS button to set the Hour Please note AM or PM Press and release the AL button 8 x ALARM MINUTE The Alarm Minutes will flash Use the PLUS or MINUS button to set the Minutes Press and release the AL button ALARM ACTIVATION x Press and rel...

Page 5: ...ck down to lock the screw into place NOTE Always ensure that the atomic clock locks onto the screw before releasing 10 POSITIONING THE OUTDOOR TEMPERATURE TRANSMITTER The remote temperature transmitter should be mounted vertically to avoid damage WALL MOUNT Install one mounting screw not included into a wall within transmission range of the atomic clock leaving approximately 3 16 of an inch 5mm ex...

Page 6: ... Technology Ltd or La Crosse Technology Ltd s authorized service center La Crosse Technology Ltd will repair or replace this product at our option and at no charge as stipulated herein with new or reconditioned parts or products if found to be defective during the limited warranty period specified above All replaced parts and products become the property of La Crosse Technology Ltd and must be ret...

Page 7: ... Registration www lacrossetechnology com 512B 811 www lacrossetechnology com support register The complete instruction manual is available at www lacrossetechnology com 512A 811 www lacrossetechnology com 512B 811 Le manuel d instruction complet est disponible sur www lacrossetechnology com 512A 811 www lacrossetechnology com 512B 811 El manual de instrucciones completo está disponible en www lacr...

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