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PRODUCT OVERVIEW
FEATURES
• Precise time and date set via RF signals from the US
Atomic Clock
• Calendar displaying date with month and day of the
week in English, Spanish, French, German or Italian
• Indoor temperature display with trend indicator
• User-selectable temperature display in Celsius or
Fahrenheit
• User-selectable 12 or 24 hour time format
• Wall mount or desktop option
FRONT VIEW
A. RADIO CLOCK WITH INDOOR
TEMPERATURE IN A TWO - LINE
LCD DISPLAY
REAR VIEW
B. TIME ZONE SWITCH
• Selects US Time Zone
C. WAVE/C
∞
/F
∞
BUTTON
• Selects the temperature display in Celsius or
Fahrenheit
• Activates atomic clock receiver
D. TIME SET BUTTON
• Allows to set clock manually
E. UP BUTTON
• Increases all function parameters
• Selects 12 or 24 hour time display format
• Activates atomic clock receiver
• Activates US Time Zone selection mode
F. DOWN/LANG BUTTON
• Decreases all function parameters
• Sets the language for the day of the week
G. RESET BUTTON
• Resets all settings
H. BATTERY COMPARTMENT
• Accommodates 2 (two) UM-3 or AA 1.5V alkaline
batteries.
I. UNFOLDING TABLE STAND
• Keeps unit in upright position on a flat surface
J. WALL MOUNT RECESSED HOLE
• Keeps unit on the wall
WWVB RADIO CONTROLLED TIME
The NIST (National Institute of Standards and
Technology)radio station (WWVB) is located in Ft.
Collins, Colorado. It transmits an exact time signal
continuously throughout the most of the continental
United States at 60 KHz frequency. The Jumbo Atomic
Clock can receive this WWVB signal through the
internal antenna from up to 2,000 miles away. Due to the
nature of the Earth’s ionosphere, reception can be
limited during the daylight hours. The radio controlled
clock will search for an alternate station that receives the
atomic time signal from the NIST Atomic clock in
Boulder, Colorado.The WWVB tower icon on the unit’s
display will flash indicating a radio signal reception
from the WWVB station. If the tower icon is not fully lit,
or if the time and date are not set automatically, please
consider the following:
• During night-time hours, atmospheric disturbances
are typically less severe and radio signal reception
may improve. A single daily reception is sufficient
enough to keep the clock accuracy within 1 second.
• Make sure the unit is positioned at 8 feet (2 meters)
distance from any interference source such as a TV,
computer monitor, microwave, etc.
• Within concrete wall rooms such as basements or
office buildings, the received signal may be weakened.
Always place the Jumbo Clock near the window for
better reception.
GETTING STARTED
BATTERY INSTALLATION
• Open the battery compartment door.
• Install 2 batteries (UM-3 or “AA” size 1.5V)
matching the polarity as shown in the battery
compartment.
• Replace the battery compartment door.
RADIO CONTROLLED CLOCK
After installing batteries, set the time manually.
ONE TIME SET is needed ONLY when first used.
The clock will update the time automatically afterwards.
Once the atomic time signal is received, the date and
time will be set automatically, and the [ ] icon will
appear.
After the clock is set manually, place it by
the window for the better reception. The atomic clock
receiver is programmed that it will continue to search
for the atomic time signal daily for every hour between
1:00 am and 4:30 am.
Once the time signal has been successfully received,
the time and date will be updated automatically.
CALENDAR AND CLOCK DISPLAY MODES
Precise time is displayed in hour-minutes-seconds
format on the top line of the Jumbo Clock.
The date is displayed in month-date format on the
bottom line next to the day of the week.
PM
DAY
DATE
MONTH
Indoor Temperature
Time of Day With Seconds,
US Time Zone Map
Calendar
Day of the Week
TIME SET
UP
DOWN
LANG
RESET
WAVE
∞
C/
∞
F
Mountain Time
Central Time
Eastern Time
Pacific Time
AA/R6/IEC/UM3
AA/R6/IEC/UM3
MADE IN CHINA
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C
D
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PM
DAY
DATE
MONTH
