Atomic Time - Digital Wall Clocks


Atomic Digital Wall Clock


  • 4" Tall Time Display
  • Atomic Time & Date
  • IN Temp (°F) & Humidity
  • OUT Temp (°F)
  • Forecast with Tendency
  • Time Alarm with Snooze
  • 3 Languages:
    English, French, and Spanish

Receiver: 11.79 " x 12.08 " x 1.09"
Sensro: 5.5" x 1.6" x 1"

All Features:
  • Weather forecasting function with
    3 weather icons and weather tendency indicator
  • Wireless outdoor temperature (°F)
  • Monitors indoor temperature (°F)
  • Monitors indoor humidity (%RH)
  • Barometric tendency arrow
  • Atomic time and date with manual setting
  • Automatically updates for Daylight Saving Time (on/off option)
  • 12 hour time display
  • Perpetual calendar
  • Time zone setting
  • Time alarm with snooze
  • 3 languages to choose from: English, French, Spanish
  • Wall hanging or free standing
  • Swiss precision sensor


  • Indoor humidity range: 0% to 99%
  • Wireless outdoor temperature range: -21.8°F to 157.8°F
  • Indoor temperature range: 14.1 °F to 99.9 °F
  • Transmission range: Up to 330 Feet
  • Transmission frequency: 433.92 MHz
  • Power Requirements:
    Clock: 2 "AA" Alkaline batteries
    Wireless sensor: 2 "AA" Alkaline batteries


Please verify the type of movement on your clock with the images below to get the correct documentation.

Click here for Manual   



Remember for your digital wall clock to work properly it must be started correctly using good quality alkaline batteries and the time must be set.

Section 1 - LCD
Question 1   The LCD is faint
    Replace the batteries
Section 2 - WWVB signal has not been received
Question 1   No reception of WWVB signal


  1. It may help reception to face the front of the Atomic Clock in the general direction of Ft. Collins, Colorado.
  2. Wait overnight for signal.
  3. Be sure the Atomic Clock is at least 6 feet from any electrical devices, i.e. TV sets, computers, or other radio controlled clocks.
  4. Remove batteries for five minutes, reinsert and leave the unit alone overnight without pressing buttons.
  5. If problems persist contact La Crosse Technology via email at or by phone at
Section 3 - Time Display
Question 1   Hour is incorrect, however, the minutes and date are correct.


  Be sure correct time zone and daylight saving time are selected.
Section 4 - Temperature Display
Question 1   "OFL" appears in the indoor temperature section of the LCD


  Move the atomic clock to an area with warmer or cooler surrounding temperature. Current surrounding temperatures are outside measuring range.
Question 2   "--.-" appears in the outdoor temperature section of the LCD.

1. Remove the batteries of both units for one minute, then reinsert them.

2. Move the atomic clock closer to the transmitter or place the transmitter closer to the atomic clock. Make sure the clock is at a receivable range from the transmitter.

3. Move the units to another location. Interferences from other electrical devices operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.

Question 4   "OFL" appears in the outdoor temperature section of the LCD.


  Wait until the current surrounding temperature cools down or increases. Current temperature is outside of the measuring range of the transmitter. The outdoor temperature will be displayed again once the current surrounding temperature is within the range of the transmitter.
Question 4   Display the outdoor temperature
  1. Bring both units inside and have the units 3-5 feet apart with nothing in- between them.
  2. Remove the batteries from both units.
  3. Press one of the buttons at least 20 times or until the display is blank to clear all memory.
  4. Put the batteries back into the remote sensor.
  5. Taking care not to press any buttons, reinstall the batteries in the display.
  6. Do not press any buttons for at least 10 minutes after installing the batteries. (Let them establish a good connection.)
  7. An outdoor temperature should be showing on your display. You can now put your outdoor sensor back outside.

The maximum open-air distance is 80 feet in a straight line although you should take into account distance and resistance. Subtract 25-30 feet for an exterior wall or any obstruction that is similar in width or composition. Subtract 15-20 feet per interior wall or any obstruction that is similar in width or composition. (An obstruction would include anything that is between the line of sight like a roof, walls, floors, ceilings, trees, etc.) Also keep your units away from electronic appliances like TV’s, microwaves, computers, refrigerators, and speakers.

We have trouble maintaining a signal through metal siding, stucco walls, and UV glass. You can get the remote sensor to transmit through these materials, but it will take a little bit of trial and error. Reset the weather station as mentioned above and change the angle that the remote transmits through the siding or glass until an outdoor temperature remains on the display for an extended period of time. Keep in mind that the signal from the remote must travel through some space (3 inches of air minimum) before reaching the metal wall or glass window.

Question 5   Mounting the remote sensor

In order to get an accurate reading and to prolong the life of your sensor we recommend that you have it in a sheltered area out of the sun and direct rain. Make sure that the sensor is higher than your display. Fog and Mist will not affect the sensor, but a soaking in water may. You can mount it outside under an eve of your house or any other suitable place that will keep it out of the sun and rain. Do not wrap the sensor in plastic or seal it in a plastic bag.