MARATHON CL030027-FD-NA Atomic Clock with Indoor-Outdoor Temperature User Guide

: June 5, 2024
: MARATHON

Table of Contents

MARATHON CL030027-FD-NA Atomic Clock with Indoor-Outdoor Temperature
What’s in the box
Battery installation
Getting started
Clock set up
Steps
Alarm set up
Thermometer
Troubleshooting
Precautions
Specifications
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

MARATHON CL030027-FD-NA Atomic Clock with Indoor-Outdoor Temperature

What’s in the box

FRONT VIEW

Front

A1: Time
A2: daylight saving time icon
A3: radio-control icon
A4: Time zone
A5: alarm function icon
A6: Main unit batteries voltage is low
A7: Day of week
A8: ice alert icon
A9: Indoor temperature
A10: outdoor temperature sync icon
A11: Outdoor temperature
A12: Month
A13: Day
A14: Remote sensor batteries voltage is low

BACK VIEW

B1: TIME ZONE switch
B2: SET UP button
B3: button
B4: button
B5: OUTDOOR TEMP SYNC button
B6: button
B7: RESET button
B8: °C/°F button
B9: WAVE button
B10: DST switch
B11: RCC ON/OFF switch
B12: Wall mount hole
B13: Battery compartment
B14: Stand

Outdoor remote sensor

C1: Wall mount hole
C2: LED Transmission indicator
C3: RESET button
C4: Battery compartment

Battery installation

Main Unit

Open the cover of the battery compartment on the main unit.
Insert four AA size batteries according to the polarity (+ and -) marks inside the compartments.

Outdoor Remote Sensor

Open the cover of the battery compartment on the remote sensor.
Insert two AA batteries according to the polarity (+ and -) marks inside the compartments.

Getting started

Clock
Open the battery cover on the clock and insert 4x new AA batteries, observing the correct “+” and “-“ polarity. The unit can be placed onto any flat surface by using the built-in stand,
or placed onto any wall using the wall mount at the back of the unit. It is recommended you place the clock near a window or in a location with good reception as the automatic time setting requires a strong radio-wave signal.
Outdoor Remote Sensor
Open the battery cover on the sensor and insert 2x new AA batteries, observing the correct “+” and “-“ polarity. The outdoor remote sensor should be securely mounted to a wall using the wall mount hole located at the back. There is also a pullout stand that can be used to place the outdoor remote sensor on a flat surface. It is recommended to place the unit in a dry, shaded area to protect it from direct elements.
Low Battery Indication
The low battery icon will appear on the display indicating the batteries should be replaced
Outdoor Temperature Synchronization
The remote sensor will automatically transmit the temperature to the clock after the batteries are installed. The clock will also automatically search for the signal from the remote sensor for a few minutes after the batteries are installed. When the clock is searching for the remote sensor, the icon will appear on the display of the clock. If the outdoor temperature is not displayed after three minutes, hold the OUTDOOR TEMP SYNC button for three seconds to search for the signal again.

Losing Synchronization of the Outdoor Remote Sensor
If the clock had received the outdoor temperature successfully, but now displays a blank value (–.-), the synchronization between the outdoor remote sensor and the main unit may have been lost. Press and hold OUTDOOR TEMP SYNC button on the clock for three seconds, the icon will appear and the clock will attempt to search for the outdoor temperature for a few minutes to re-initiate the synchronization with the remote sensor. If the outdoor temperature is not displayed after three minutes, replace the batteries in the outdoor remote sensor, bring the remote sensor closer to the main unit and try the above steps again.
NOTE: The transmission range can be impacted by extreme cold temperature, metallic or electronic objects, as well as obstructions and interferences. You may need to experiment with various locations to get the best results. When the batteries are replaced in the outdoor remote sensor (or the reset button of outdoor remote sensor is pressed), you will need to press and hold OUTDOOR TEMP SYNC button on the main unit for three seconds to re-initiate the synchronization, otherwise the signal will not be recognized by the main unit.
Daylight Savings Mode

Slide the DST switch to AUTO, when the RCC function is ON, and the clock is in an area where the RC-WWVB signal can be received. NOTE: the icon will appear on the LCD during daylight saving time.
Slide the DST switch to OFF to turn off Daylight savings mode
Slide the DST switch to ON, and the time will change to daylight saving time automatically, whether the RCC function is ON or OFF.

Time Zone
Slide TIME ZONE switch to select the time zone, there are 8 time zone for selectable:

Hawaii = HST
Alaskan = AKST
Pacific = PST
Mountain = MST
Central = CST
Eastern = EST
Atlantic = AST
NST = NST

Clock set up

Automatic Clock Set up: RCC WWVB Reception:
NOTE: Ensure the RCC switch is set to ON, to enable automatic clock set up.
When the RC function is set to ON:

After powering up, if the RCC switch is set to ON the clock will automatically start to synchronize with the WWVB radio wave signal. The Radio Control Icon will flash on the LCD.
The clock can be set to scan the time signal manually by holding the WAVE button for 3 seconds.
Reminder:

Reception can take up to 10 minutes
If the signal is weak, it can take up to 24 hours to get a valid signal.
The clock automatically synchronizes with the radio wave signal at 3:00am every day to ensure accurate timing. If reception fails, the icon will disappear from the LCD.
You can stop the clock from automatically synchronizing by holding the WAVE button for 2 seconds.

Manual Clock Set Up: RCC function is set to OFF
NOTE: Ensure the RCC switch is set to OFF, to disable automatic clock set up.

Steps

Press the SET UP button to toggle the display between year & time.

To enter Clock Set Up
Hold the SET UP button for 3 seconds,
NOTE: Press and hold or to speed up the digits cycling.

Default = SET 12 OR 24HR CLOCK DISPLAY
12HR will flash. Press or to select 12HR 24HR. In 12 Hr mode, AM indicates morning time and PM indicates afternoon time.

Press 1x = SET HOUR: Press or to set hours.
Press 2x = SET MINUTE : press or to set minutes.
Press 3x = SET SECONDS: press or to reset seconds to zero.
Press 4x = SET YEAR: press or to set a year.
Press 5x = SET MONTH: press or to set a month.
Press 6x = SET DAY: press or to set a date.
Press 7x = SET LANGUAGE OF WEEKDAY DISPLAY : press or to select desired language:
Press 8x = ICE ALARM FUNCTION : press or to set to ON or OFF.
Press 9x = EXIT CLOCK SETUP MODE
NOTE: If you do not press a button for 15 seconds the clock will automatically exit setup mode.

Alarm set up

Steps

To enter Alarm Set Up Hold the for 3 seconds,
NOTE: Press and hold or to speed up the digits cycling.
Default = SET HOUR: Press or to set hours.
Press 1x = SET MINUTE: Press or to set minutes.
Press 2x = EXIT ALARM SETUP MODE
NOTE: If you do not press a button for 15 seconds the clock will automatically exit setup mode.

Alarm Activation and Deactivation:
Press button to activate or deactivate the alarm. When the alarm is activated, the alarm icon will appear on the display and the alarm time displays for 3 seconds.

Thermometer

Press the °C/°F button to set temperature in Celsius or Fahrenheit.
If the temperature is out of the measurable range, LL.L (beyond the minimum temperature) or HH.H (beyond the maximum temperature) will be shown on the LCD.

NOTE: The clock might not work properly if the temperature is higher than 50 °C.

Troubleshooting

Use a pin to press the RESET button if the clock is displaying the incorrect time, even when the radio-control icon is visible on the display. This may happen when the external noise is strong enough to interfere with the time signal.
Press the RESET button on the outdoor remote sensor if the readout is incorrect or does not respond.

Precautions

The clock loses its time information when the battery is removed.
Set up the outdoor remote sensor away from direct sunlight and rain.
Do not subject the clock to excessive force or shock.
Do not expose it to extreme temperatures, direct sunlight, dust, or moisture.
Avoid contact with corrosive materials. Do not clean the device using abrasive or corrosive materials or products. Abrasive cleaning agents may scratch the plastic parts and corrode the electronic circuits.
Do not tamper with any of the internal components of this clock. This may cause damage to the components.