Marathon CL030027 User Manual

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ATOMIC WALL CLOCK with REMOTE TEMPERATURE SENSOR
Model CL030027
Instruction Manual
Congratulations on purchasing your ATOMIC CLOCK with REMOTE TEMPERATURE SENSOR. Please read these
instructions carefully and store them in a safe place for future reference.
FEATURES
 Super Accurate Atomic Time using the WWVB
Radio Signal from the Atomic Clock in Colorado,
USA
 Alarm/Snooze function
 Optional 12 Hour or 24 Hour Time Display
 Four Time Zone Settings: Pacific, Mountain,
Central and Eastern
 Automatic adjustment for Daylight Savings Time
in the Spring and Fall
 Indoor thermometer and 434MHZ wireless
outdoor temperature sensor. No wire installation is required.
 Works with up to 3 remote temperature sensors (one remote sensor is included with the clock). Additional wireless
remote sensors available separately.
 Displays Indoor/Outdoor Temperature in Celsius or Fahrenheit
 Indoor and outdoor temperature trends
 Low battery indicator
IMPORTANT: The wireless remote temperature sensor must have batteries installed before installing batteries
in the main unit.
REMOTE WIRELESS TEMPERATURE SENSOR
Inserting batteries
The remote unit uses two “AAA” batteries. To install or replace the batteries, please follow these steps:
1. Remove kickstand base.
2. Unscrew the 4 screws on the back of the compartment and remove the cover.
3. Insert the batteries observing the correct polarity.
4. Replace the battery cover on the unit and seal by re-screwing firmly.
5. When a “Low Battery” symbol appears on the LCD screen in the Outdoor Temperature section, please replace
the batteries of the remote unit.
6. In some instances, the LCD display might be abnormal after new batteries are installed. If this happens, remove and
reinstall the batteries until the display is normal.
7. After installation of the new batteries, the setup procedures need to be performed. (See Setting the remote
transmitter(s))
Setting the remote transmitter(s)
1. There are 2 buttons inside the back of the remote sensor unit.

Marathon CL030027 Specifications

General

Brand	Marathon
Model	CL030027
Category	Clock
Language	English

Summary

Remote Wireless Temperature Sensor

Inserting Batteries

Instructions for installing batteries in the remote sensor unit.

Setting the Remote Transmitter(s)

Steps to set up the house code and channel for the remote sensor.

Operation

How to operate the remote sensor, including temperature unit selection.

Main Unit Operation

Inserting Batteries

Steps to install or replace batteries in the main clock unit.

First Reception After Power-Up

How the clock receives time signals and synchronizes after initial battery installation.

Radio Control Feature

Explanation of the NIST WWVB atomic time signal reception.

Reception Interference Sources

Factors that can interfere with radio signal reception and solutions.

Time Update

How the clock automatically updates its time and manual reception options.

Clock Settings and Functions

434 MHz Reception

How the main unit receives temperature data from the remote sensor wirelessly.

Losing Signal Indication

What the display shows when the remote sensor signal is lost and how to reset.

Setting the Alarm Time

Procedure to set the desired alarm time for the clock.

Snooze Function

How to activate the snooze feature when the alarm sounds.

Setting Time and Calendar

Steps to set the clock's time, date, and calendar information.

Advanced Settings and Features

Setting Time Format

How to choose between 12-hour and 24-hour time display.

Setting Temperature Format

How to select Celsius (°C) or Fahrenheit (°F) for temperature display.

Setting Time

Procedure to manually adjust the hour and minute of the clock.

Setting Calendar

Procedure to set the month, date, and year for the clock.

Daylight Saving Time

How to enable or disable the Daylight Saving Time function.

Setting Time Zones

How to select the correct time zone for accurate time display.

Trend Symbols

Explanation of symbols indicating temperature changes (UP, DOWN, STANDARD).

Cycle Symbol

Explanation of the cycle symbol for alternating data display with multiple sensors.

Low Battery Symbol

Indication for replacing batteries in the main unit.

Specifications and Safety

Main Unit Specifications

Technical details for the main clock unit, including power and operating parameters.

Remote Unit Specifications

Technical details for the remote sensor unit, including power and transmission.

Safety Instructions

Important safety precautions for using the clock and handling batteries.