La Crosse Technology WS-8249U-CH User manual

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LCD2
display
LCD1
display
Hanging holes
Foldable stands
Battery cover
WS-8249U
ATOMIC CLOCK WITH INDOOR TEMP/HUMIDITY AND OUTDOOR
TEMPERATURE
Instruction Manual
FEATURES:
ATOMIC CLOCK:
•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)
•Indoor temperature and humidity display
•Outdoor temperature display via 433MHz transmission
•Wall mount or freestanding
•Weather forecast with weather tendency indicator
Function keys

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OUTDOOR TEMPERATURE TRANSMITTER:
•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.
Mounting Bracket

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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,
DST ON/OFF (daylight saving time), radio-controlled time ON/OFF, language,
hour, minute, year, month and date.
+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
SNZE key : To activate the snooze function during alarm

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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.
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
Radio reception icon
Outdoor temperature
Weekday
Date
A
larm icon
Month
Weather forecast
icoon

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Default (Factory) Setting
•LCD contrast setting 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.

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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.
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 Radio-
controlled 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.

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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.
Note: Turn off the radio-controlled time feature only if you DO NOT want the clock to
automatically update itself.
LANGUAGE SETTING
The weekdays can be displayed in LCD2 with the pre-set languages: US English (ENG), French
(FRA) and Spanish (ESP).
1. LAN will be displayed in the lower LCD along with one of the three letter language
abbreviations.
2. Press and release the +key to select the desired language.
3. Press and release the SET key to confirm the language setting and enter the Manual Time
setting mode.
MANUAL TIME SETTING
In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting
distance, etc.), the time can be manually set. The clock will then work as a normal Quartz clock.
Note: In 12-hour mode the time will be displayed with an additional “PM”for the time from 12:00
noon until 11:59.
1. The hour digits will start flashing in the upper LCD.
2. Select the desired hours by pressing and releasing the +key.
3. Press and release the SET key to advance to the minutes setting.
4. Now the minute digits will start flashing.
5. Select the desired minutes by pressing and releasing the +key. If the +key is held, the
units will increase by 5.
6. Press and release the SET key to confirm the Time setting and continue to the Year setting.

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Note:
The unit will still try to receive the signal every day despite it being manually set. When it does
receive the signal, it will change the manually set time into the received time. During reception
attempts the WWVB tower icon will flash. If reception has been unsuccessful, then the WWVB
tower icon will not appear but reception will still be attempted the following hour.
WWVB time reception takes place from 12:00 am through 6:00 am each day (attempts WWVB
reception every full hour within this time frame). When the time signal is received for example at
1:00 am, the atomic clock will not attempt to receive the WWVB signal for the remaining hours
until 6:00 am. Therefore, the next signal attempt will take place between 12:00 am and 6:00 am
the next day. The other times WWVB reception takes place, are upon setup and after manual
time set exiting mode. Reception is generally not possible during daylight hours due to the
interference of the sun.
YEAR SETTING
The year can be selected sequentially from 2003 to 2029 and will then start over again (default
setting 2004). None of the digits of the year will be visible on the lower LCD display however the
year must be correct as it affects the day of the week display.
1. The year digits will start flashing in the lower LCD.
2. Press and release the +key to select the desired year.
3. Press and release the SET key to confirm the Year setting and continue to the Month
setting.
MONTH SETTING
1. The month digits on LCD2 will start flashing.
2. Press and release the +key to select the desired month.
3. Press and release the SET key to confirm the Month setting and continue to the Date
setting.
DATE SETTING
1. The digits for the date will start flashing in the lower LCD (Default setting 1).
2. Press and release the +key to select the desired date.
3. Press and release the SET key to confirm the Date setting and exit the manual setting
mode.
Note: The date can only be set in conjunction with the selected month. For example, it is not
possible to set the date 30 if the month of February is selected.

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EXIT THE MANUAL SETTING MODES
•To return to the normal display mode from anywhere in manual setting mode simply press
the ALM key at anytime.
•If no keys are pressed for at least 15 seconds in setting mode, the atomic clock will
automatically switch back to normal display mode.
ALARM SETTING
To enter into the alarm setting mode:
1. Hold the ALM key for 5 seconds. The hour digits start flashing.
2. Press and release the + key to set the hour.
3. Press and release the ALM key to continue to the minutessetting.
4. The minute digits start flashing.
5. Press and release the + key to set the minutes.
6. Press and release the ALM key to exit the Alarm setting mode or wait for 15 seconds for the
clock to automatically timeout and return to the standard display mode.
TO DEACTIVATE THE ALARM:
The alarm will be automatically switched ON when the alarm time is set. To deactivate the alarm
(OFF), press and release once the ALM key in normal mode display. The alarm icon will
disappear, the alarm is now off.
SNOOZE SETTING
The snooze can only be activated during alarm time for a snooze duration of 10 minutes by
pressing the SNZ key on the back of the clock.
OUTDOOR TEMPERATURE TRANSMITTER:
A
larm icon (((•))) (ON)

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The temperature is measured and transmitted to the atomic clock every 1 minute. The atomic
clock will update the temperature display every 5 minutes.
The range of the outdoor temperature transmitter may be affected by the temperature. At cold
temperatures the transmitting distance may be decreased. Please bear this in mind when
positioning the transmitter. Also the batteries may be reduced in power during periods of extreme
cold temperatures.
433MHz RECEPTION CHECK FOR OUTDOOR TEMPERATURE TRANSMITTER
The atomic clock will receive the temperature data within 4 minutes. If the temperature data has
not been received 4 minutes after setting up (the display shows “- - -”), then please check the
following points:
1. The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet (2
meters) away from any interfering sources such as computer monitors or TV sets.
2. Avoid placing the receiver onto or in the immediate proximity of metal window frames.
3. Using other electrical products such as headphones or speakers operating on the same signal
frequency (433MHz) may prevent correct signal transmission and reception.
4. Neighbors using electrical devices operating on the 433MHz signal frequency can also cause
interference.
Note:
When the 433 MHz signal is received correctly, do not re-open the battery cover of either the
outdoor temperature transmitter or atomic clock, as the batteries may spring free from the
contacts and force a false reset. Should this happen accidentally then reset all units (see Setting
up above) otherwise transmission problems may occur.
The maximum transmission range is 330 feet (100 meters) from the outdoor temperature
transmitter to the atomic clock (in open space). However, this depends on the surrounding
environment and interference levels. If no reception is possible despite the observation of these
factors, all system units have to be reset (see Setting up).
CHANGING THE DISPLAY MODE (SECONDS,TEMPERATURES AND HUMIDITY)
There are four possible display modes to view the seconds, temperatures and humidity.
The indoor humidity, indoor temperature and outdoor temperature display is the default (factory)
setting.