La Crosse Technology C85183 User Manual

Model: C85183

Instruction Manual

Introduction

The atomic alarm clock features radio-controlled time, indoor temperature, humidity and moon phase on a
colorful, and easy to read display. Includes backlight with dimmer, calendar with month, date, weekday
display and alarm with snooze. Use the integrated USB charging port to charge your smartphone, camera
or other devices while you sleep.

Multi-Color Atomic Alarm Clock

Features

Atomic time and date auto sets
Time display: hour/minutes
12/24 hour time and 10 minutes snooze alarm
7 time zones: AST, EST, CST, MST, PST, AKST, HAST
Calendar: month, day, date
USB charging port (0.5A output) for mobile devices (charging cord not included)
Indoor temperature with trend arrow
Indoor humidity with trend arrow
Moon phase
Multi-color display
Continuous illuminated backlight using AC power
Backlight dimmer (high, low, off)
Low battery icon

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Table of Contents

Introduction 1
Multi-color Atomic Alarm Clock 1
Features 1
Table of Contents 2
Setup Instructions Step-by-Step 2
Troubleshooting 3
Power the Atomic Alarm Clock 3

A/C Power Adapter 3

Batteries 3
WWVB Radio-Controlled Time Reception 3
Function Buttons 4
Program Menu 4

WWVB Reception ON/OFF 4

Time Zone 4

Daylight Saving Time Indicator ON/OFF 5

12-hour or 24-hour Time Format 5

Set Time 5

Set Calendar 5
Fahrenheit/Celsius 5
Alarm Time 6
Set Alarm 6

Activate/Deactivate Alarm 6

Snooze Alarm 6
Backlight 6

A/C Power Adapter 6

Batteries 6
USB Charge Port 7
Temperature Trend Arrows 7
Humidity Trend Arrows 7
Moon Phase 7
Position the Atomic Alarm Clock 8
Specifications 8
Indoor 8
Power Requirements 8
Battery Life 8

Dimensions 8
Low Battery Icon 8
Care and Maintenance 8
Warranty Information 9

Setup Instructions Step-by-Step

STEP 1:

Insert the power adapter plug into a wall outlet
Insert the 5 volt A/C power adapter into the back of the atomic alarm clock for a continuous backlight.
The atomic alarm clock will light up and display indoor temperature and time (12:00).

IMPORTANT: When operating on A/C power, the backlight and USB charging port will turn off while the
atomic alarm clock searches for the WWVB to avoid interference. The backlight will return after 4-8
minute search (which occurs during the late night or early morning hours). The USB charging port will
then resume working.

STEP 2: (Optional battery operation)

Remove the battery cover from atomic alarm clock. Slide tab up and pull out to remove the battery

cover.

Insert 2 NEW AAA batteries (included) into the back of the atomic alarm clock. Observe the correct

polarity (see markings inside the battery compartment).
Note: When operating on battery power only, the backlight will come on for 10 seconds when the LIGHT
button is pressed.

Do Not Mix Old and New Batteries

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Do Not Mix Alkaline, Standard, Lithium or Rechargeable Batteries

Troubleshooting

If the atomic alarm clock does not display the indoor temperature after 30 seconds, remove the A/C

power adapter (batteries) and start the setup process again.

Power the Atomic Alarm Clock

The atomic alarm clock can be powered by the 5-volt A/C adapter or batteries.
A/C Power Adapter

Insert enclosed 5-volt a/c power adapter into a wall outlet, then into the atomic alarm clock.

Batteries

1. Slide tab up and pull out to remove battery cover.

2. Install two NEW AAA batteries (included) according to the polarity markings.

Do Not Mix Old and New Batteries
Do Not Mix Alkaline, Lithium, Standard or Rechargeable Batteries

If the atomic alarm clock does not display indoor temperature after 60 seconds, remove adapter and
batteries and wait for at least 60 seconds before repeating the setup process. Time

WWVB Radio-Controlled Time

The NIST radio station, WWVB, is located in Ft. Collins, Colorado and transmits the exact time signal
continuously throughout the United States at 60 kHz. The signal can be received up to 2,000 miles away
through the internal antenna in the atomic alarm clock. However, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours.

The WWVB reception icon with full signal strength will appear on screen if the reception of
atomic time is successful.

When powered up, the Atomic Alarm Clock will automatically try to receive the WWVB signal every

three hours, for example: 0:00, 3:00, 6:00......18:00, 21:00, but if at any of the above times it receives

the signal, it won’t search again until next day at UTC 7:00, 8:00, 9:00. 10:00, 11:00. When it
successfully receives a time update at UTC 7:00, 8:00, 9:00. 10:00, or 11:00, it will not look for an

update again until the next day.
In normal mode, push the - button for three seconds to enter manual searching for the signal.
In reception mode, push the - button for three seconds to exit searching for the atomic signal.

Note: During WWVB reception, all buttons will work. When in time set or alarm set mode, the WWVB
search will stop. When alarm rings, it will stop the WWVB search.

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