La Crosse Technology WS-8248U-CH, WT-5720, WS-8248U-OAK User Manual
WS-8248U
ATOMIC CLOCK WITH INDOOR TEMP/HUMIDITY AND OUTDOOR
TEMPERATURE
FEATURES:
ATOMIC CLOCK:
LCD1
display
LCD2
display
Function keys
• WWVB Radio controlled time with manual time setting
• Time display: hour, minute, second
• Alarm setting with snooze function
• Complete calendar display
• Weekday display (3 languages to choose from: English, French and Spanish)
• Time zone setting
• Daylight savings time ON/OFF option (DST)
• ºF or ºC temperature display selectable
• Indoor temperature and humidity display
• Outdoor temperature display via 433MHz transmission
• Wall mount or freestanding
• Current moon phase display
Instruction Manual
Hanging holes
Battery cover
Foldable stands
1
OUTDOOR TEMPERATURE TRANSMITTER:
Mounting Bracket
• Remote transmission of outdoor
temperature to the atomic clock by 433
MHz signals
• Wall mounting case
TO INSTALL AND REPLACE BATTERIES IN THE TEMPERATURE TRANSMITTER
The transmitter uses 2 x AA,1.5V batteries. To install and replace the batteries, please follow the
steps below:
1. Remove the cover.
2. Insert the batteries, observing the correct polarity (see marking inside battery compartment).
3. Replace the battery cover on the unit.
Alkaline batteries are recommended for use in both units. Avoid using rechargable
batteries.
TO INSTALL AND REPLACE BATTERIES IN THE ATOMIC CLOCK
The atomic clock uses 3 x AA, 1.5V batteries. To install and replace the batteries, please follow
the steps below:
1. Pull down on the tab at the top of the battery cover and lift up to remove the cover.
2. Insert batteries observing the correct polarity (see marking inside battery compartment).
3. Replace compartment cover.
DO NOT SET THE CLOCK.
SETTING UP:
Alkaline batteries are recommended for use in both units. Avoid using
rechargable batteries.
NOTE: Do not set the clock until the outdoor temperature is displayed.
1. Place batteries in the outdoor transmitter first, then into the atomic clock. DO NOT
PRESS ANY BUTTONS FOR 15 MINUTES.
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2. After 15 minutes both the Indoor and Outdoor areas on your clock should have a
temperature showing. If not, remove both sets of batteries, wait 15 minutes and repeat step
one.
3. After the clock receives the outdoor temperature the WWVB time code reception will
automatically start. This reception typically takes between 5-10 minutes in good conditions.
If after 15 minutes the WWVB time has not been received, use the “SET” key to manually
enter the set-up mode and change either the time or date in order to activate the WWVB
reception (see manual settings below). The clock will then automatically attempt to receive
the WWVB time from 12:00 am through 6:00 am each day (attempts WWVB reception
every full hour within this time frame). When this is successful, the received time will
override the manually set time. The date is also updated with the received time (Please
refer to notes on “Radio controlled time” and “Manual time setting”).
4. After the time signal has been received or the search mode has been manually stopped the
indoor temperature will be displayed.
Note:
When changing batteries in either of the units, ensure that the batteries do not spring free from
the contacts. Always wait at least 15 minutes after removing the batteries before reinserting,
otherwise start up and transmission problems may occur.
FUNCTION KEYS
The atomic clock has four easy to use keys:
SET key : To enter into the set mode for the following functions: LCD contrast, time zone,
+ key : To toggle between the seconds display options
To change any values in manual set mode
ALM key : To enter into the alarm set mode
To set the alarm ON/OFF
To display the alarm time in normal mode display
To exit the setting modes
SNZ key : To activate the snooze function during alarm
DST ON/OFF (daylight saving time), radio-controlled time ON/OFF, language,
hour, minute, year, month and date.
3
ATOMIC CLOCK LCD SCREEN DESCRIPTIONS
The atomic clock's LCD is divided into 2 sections and once the batteries are inserted, all the
segments will light up briefly before displaying the information for time, date, indoor and outdoor
temperatures and indoor humidity.
Radio reception icon
MANUAL SETTINGS
Note:
If the atomic clock has already successfully received the WWVB time signal and displays
the correct time and date, then the Manual settings can be skipped.
After completion of the above described procedures in “Setting up” the manual setting modes
can be entered by pressing and holding the SET key for 5 seconds. The following settings can
now be programmed:
WWVB time
Indoor humidity and
temperature
Outdoor temperature
Default (Factory) Setting
LCD contrast setting 4 •
Alarm icon
Month
Moon Phase
Date
Weekday
4
•
Time zone setting -5 (Eastern Standard Time)
•
DST ON/OFF ON
•
Radio-controlled time ON/OFF ON
•
Language display setting ENG (English)
•
Manual time setting (Hour then Minute) 12 (hour), 00 (minute)
•
Year setting 2004
•
Month setting Jan (January)
•
Date setting 1
LCD CONTRAST SETTING
After entering the manual setting mode as described above, the LCD contrast can be set between
0 and 7.
1. Press and hold the SET key for 5 seconds.
2. LCD will be displayed in the lower display and a number will flash to the right of the word
LCD.
3. Press and release the + key to select the desired LCD contrast.
4. Press and release the SET ket to confirm the LCD contrast and continue to the Time Zone
setting.
TIME ZONE SETTING
The time zone can be set between the –1 to –12 hour or Greenwich Mean Time (GMT) range.
1. The time zone will start flashing (Default setting "-5h“) in the lower LCD display.
2. Press and release the + key to select the desired time zone.
3. Press and release the SET key to confirm the time zone setting and continue to the DST
(Daylight Saving Time) setting.
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Note: The time zones from –4 to –10 hours will be displayed with 3 characters abbreviations:
• -4 ATL (Atlantic time),
• -5 EST (Eastern time; default time zone),
• -6 CST (Central time),
• -7 MST (Mountain time),
• -8 PST (Pacific time),
• -9 ALA (Alaska time),
• -10 HAW (Hawaii time).
• "GMT” will be displayed if set to GMT (0).
DST SETTING (DAYLIGHT SAVING TIME)
1. The word ON will start flashing in the lower LCD display.
2. Press and release the + key to select DST ON or OFF.
3. Press and release the SET key to confirm the DST setting and continue to the Radiocontrolled time setting.
Note: The DST default is “ON”, meaning that the WWVB will automatically change the time
according to Daylight Saving Time in the spring and fall. For areas that do not recognize
DST changes (Arizona and parts of Indiana) turn the DST “OFF”.
RADIO-CONTROLLED TIME SETTING
1. The word ON will start flashing in the lower LCD display.
2. Press and release the + key to select radio-controlled time ON or OFF.
3. Press and release the SET key to confirm the radio-controlled time setting and continue to
the Language setting.
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