La Crosse Technology WS-8117 User manual

All rights reserved. This handbook must not be reproduced in any form, even in excerpts, or
duplicated or processed using electronic, mechanical or chemical procedures without written
permission of the publisher.
This handbook may contain mistakes and printing errors. The information in this handbook is
regularly checked and corrections made in the next issue. We accept no liability for technical
mistakes or printing errors, or their consequences.
All trademarks and patents are acknowledged.
WS-8117
Atomic Clock With Outdoor Temperature and Moon Phase
Instruction Manual

WS-8117
ATOMIC CLOCK WITH OUTDOOR WIRELESS TEMPERATURE AND
MOON PHASE
Instruction Manual
FEATURES:
ATOMIC CLOCK:
•WWVB Radio controlled time with manual time setting
•12/24 hour time display
•Time display: hour, minute, second
•Alarm setting with snooze function
•Calendar display
•Weekday display (3 languages to choose from: English, French and Spanish)
•Time zone setting
•Daylight savings time ON/OFF option (DST)
•ºC or ºF temperature display selectable
•Indoor temperature display
•Outdoor temperature display via 433MHz transmission
•Wall mount or freestanding
•Current moon phase display
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 ATOMIC CLOCK
The atomic clock uses 2 x AA, 1.5V batteries. To install and replace the batteries, please follow the
steps below:
1. Insert finger or other solid object in the space at the bottom center of the battery compartment
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.
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.
SETTING UP:
Holder
LCD2
display
Battery cover
Function keys
LCD1
display
Hanging holes
Foldable stand

WS-8117
ATOMIC CLOCK WITH OUTDOOR WIRELESS TEMPERATURE AND
MOON PHASE
Instruction Manual
FEATURES:
ATOMIC CLOCK:
•WWVB Radio controlled time with manual time setting
•12/24 hour time display
•Time display: hour, minute, second
•Alarm setting with snooze function
•Calendar display
•Weekday display (3 languages to choose from: English, French and Spanish)
•Time zone setting
•Daylight savings time ON/OFF option (DST)
•ºC or ºF temperature display selectable
•Indoor temperature display
•Outdoor temperature display via 433MHz transmission
•Wall mount or freestanding
•Current moon phase display
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 ATOMIC CLOCK
The atomic clock uses 2 x AA, 1.5V batteries. To install and replace the batteries, please follow the
steps below:
1. Insert finger or other solid object in the space at the bottom center of the battery compartment
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.
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.
SETTING UP:
Holder
LCD2
display
Battery cover
Function keys
LCD1
display
Hanging holes
Foldable stand

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 10 MINUTES.
2. After the 10 minutes both the Indoor and Outdoor areas on your clock should have a
temperature showing. If not, remove both sets of batteries, wait 10 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 10 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:
In the event of changing batteries of the unit ensure that the batteries do not spring free from the
contacts. Always wait at least 10 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: time zone, DST ON/OFF
(daylight saving time), language, hour, minute, year, month, day, weekday, 12/24
hour, ºC or ºF temperature display
+key : To toggle between the second, temperature or weekday display
To change any values in manual set mode
ALM key : To enter into the alarm set mode
To set the alarm ON/OFF
SNZE key : To activate the snooze function during alarm
To display the alarm time in normal mode display
To exit the setting modes
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.
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 3 seconds. The following settings can now be
programmed:
•Time zone setting
•DST ON/OFF
•Language display setting
•Manual time setting
•Year setting
Date
Outdoor temperature display
WWVB time
Radio reception icon
A
larm icon
Weekday
Indoor temperature

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 10 MINUTES.
2. After the 10 minutes both the Indoor and Outdoor areas on your clock should have a
temperature showing. If not, remove both sets of batteries, wait 10 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 10 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:
In the event of changing batteries of the unit ensure that the batteries do not spring free from the
contacts. Always wait at least 10 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: time zone, DST ON/OFF
(daylight saving time), language, hour, minute, year, month, day, weekday, 12/24
hour, ºC or ºF temperature display
+key : To toggle between the second, temperature or weekday display
To change any values in manual set mode
ALM key : To enter into the alarm set mode
To set the alarm ON/OFF
SNZE key : To activate the snooze function during alarm
To display the alarm time in normal mode display
To exit the setting modes
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.
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 3 seconds. The following settings can now be
programmed:
•Time zone setting
•DST ON/OFF
•Language display setting
•Manual time setting
•Year setting
Date
Outdoor temperature display
WWVB time
Radio reception icon
A
larm icon
Weekday
Indoor temperature

•Month setting
•Date setting
•Weekday setting
•12/24 hour time display setting
•ºC or ºF setting
TIME ZONE SETTING
After entering the manual setting mode as described above, the time zone can be set between the –1
to –12 hour or Greenwich Mean Time (GMT) range in LCD2. To do this:
1. The time zone (LCD2) will start flashing (Default setting "-5h“). Select the desired time zone by
pressing and releasing the +key.
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).
2. Press and release the SET key to enter the “DST Setting“.
DST SETTING (daylight saving time)
1. The ON digit will start flashing on LCD1. Set the DST ON or OFF by pressing the +key.
2. Press and release the SET key to enter the “Language 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”.
LANGUAGE SETTING
The weekdays can be displayed in LCD2 with the pre-set languages: US English, French and
Spanish.
1. Set the desired language for the weekday display in LCD 2 by use of the + key.
2. Press and release the SET key to enter the mode “Manual Time Setting”.
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 hours 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 on LCD1.
2. Set the desired hours by pressing and releasing the +key followed by pressing the SET key.
3. Now the minute digits will start flashing.
4. Set the desired minutes by pressing and releasing the +key . If the +key is held, the units will
increase by 5.
5. Press and release the SET key to move to the “Year Setting”.
Note:
The unit will still try and 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.

•Month setting
•Date setting
•Weekday setting
•12/24 hour time display setting
•ºC or ºF setting
TIME ZONE SETTING
After entering the manual setting mode as described above, the time zone can be set between the –1
to –12 hour or Greenwich Mean Time (GMT) range in LCD2. To do this:
1. The time zone (LCD2) will start flashing (Default setting "-5h“). Select the desired time zone by
pressing and releasing the +key.
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).
2. Press and release the SET key to enter the “DST Setting“.
DST SETTING (daylight saving time)
1. The ON digit will start flashing on LCD1. Set the DST ON or OFF by pressing the +key.
2. Press and release the SET key to enter the “Language 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”.
LANGUAGE SETTING
The weekdays can be displayed in LCD2 with the pre-set languages: US English, French and
Spanish.
1. Set the desired language for the weekday display in LCD 2 by use of the + key.
2. Press and release the SET key to enter the mode “Manual Time Setting”.
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 hours 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 on LCD1.
2. Set the desired hours by pressing and releasing the +key followed by pressing the SET key.
3. Now the minute digits will start flashing.
4. Set the desired minutes by pressing and releasing the +key . If the +key is held, the units will
increase by 5.
5. Press and release the SET key to move to the “Year Setting”.
Note:
The unit will still try and 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 2000 to 2049 and will then start over again (default
setting 2000). Only the last 2 digits of the year will be visible on LCD2 .
1. The year digits will start flashing on LCD2. Select the desired year by use of the +key.
2. Press and release the SET key to switch to the “Month Setting”.
MONTH SETTING
1. The month digits on LCD2 will start flashing. Set the desired month by use of the +key.
2. Press and release the SET key to move to the mode “Date Setting”.
Date Setting
1.The digits for the date will start flashing on LCD2 (Default setting 1). Set the desired date by use of
the +key.
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.
Press and release the SET key to enter the “Weekday Setting”.
WEEKDAY SETTING
1. The weekday symbols will be displayed on LCD2 in the pre-set language and flashing. Set the
desired weekday by use of the + key.
2. Press and release the SET key to enter the mode “12/24 Hours Time Display Setting”.
12/24 HOURS TIME DISPLAY SETTING
1. The “12h” or “24h” will start flashing in LCD1 (Default setting 12h). Select the desired time
display mode by use of the + key.
2. Press and release the SET key to enter the “ºC/ºF Temperature Setting“.
°C OR °F TEMPERATURE SETTING
1. The characters “°C” or “°F” will start flashing on LCD1 (Default setting °F). By use of the +key
select “°C” for temperature display in degrees Celsius or “°F” for degrees Fahrenheit.
2. Press and release the SET key to exit the setting mode and switch back to the normal display
mode .
EXIT THE MANUAL SETTING MODES
•To return to the normal display mode from anywhere in manual setting mode simply press the
SNZ key 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 4 seconds. The hour digits start flashing.
2. Press and release the + key to set the hour.
3. Press and release the ALM key to set the minutes. The minute digits start flashing.
4. Press and release the + key to set the minutes.
5. Press and release again the ALM key to exit the Alarm setting mode or wait for 15 seconds
automatic timeout.
TO DEACTIVATE THE ALARM:
The alarm will be automatically 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:
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.
A
larm icon
(((•))) (ON)

YEAR SETTING
The year can be selected sequentially from 2000 to 2049 and will then start over again (default
setting 2000). Only the last 2 digits of the year will be visible on LCD2 .
1. The year digits will start flashing on LCD2. Select the desired year by use of the +key.
2. Press and release the SET key to switch to the “Month Setting”.
MONTH SETTING
1. The month digits on LCD2 will start flashing. Set the desired month by use of the +key.
2. Press and release the SET key to move to the mode “Date Setting”.
Date Setting
1.The digits for the date will start flashing on LCD2 (Default setting 1). Set the desired date by use of
the +key.
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.
Press and release the SET key to enter the “Weekday Setting”.
WEEKDAY SETTING
1. The weekday symbols will be displayed on LCD2 in the pre-set language and flashing. Set the
desired weekday by use of the + key.
2. Press and release the SET key to enter the mode “12/24 Hours Time Display Setting”.
12/24 HOURS TIME DISPLAY SETTING
1. The “12h” or “24h” will start flashing in LCD1 (Default setting 12h). Select the desired time
display mode by use of the + key.
2. Press and release the SET key to enter the “ºC/ºF Temperature Setting“.
°C OR °F TEMPERATURE SETTING
1. The characters “°C” or “°F” will start flashing on LCD1 (Default setting °F). By use of the +key
select “°C” for temperature display in degrees Celsius or “°F” for degrees Fahrenheit.
2. Press and release the SET key to exit the setting mode and switch back to the normal display
mode .
EXIT THE MANUAL SETTING MODES
•To return to the normal display mode from anywhere in manual setting mode simply press the
SNZ key 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 4 seconds. The hour digits start flashing.
2. Press and release the + key to set the hour.
3. Press and release the ALM key to set the minutes. The minute digits start flashing.
4. Press and release the + key to set the minutes.
5. Press and release again the ALM key to exit the Alarm setting mode or wait for 15 seconds
automatic timeout.
TO DEACTIVATE THE ALARM:
The alarm will be automatically 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:
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.
A
larm icon
(((•))) (ON)

433MHz RECEPTION CHECK FOR OUTDOOR TEMPERATURE TRANSMITTER
The atomic clock will receive the temperature data within 4 minutes. If the temperature data is not
being 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 82 feet (25 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 (DAY, SECONDS, AND TEMPERATURES)
There are three possible display modes to view the day, seconds, and temperatures.
The month&date/weekday/indoor temperature/outdoor temperature is the default.
To change the display:
1. Press the + key. The display should now show the month&date/weekday/seconds/ indoor
temperature.
2. Press the + key a second time and the display will now show the month&date/seconds/indoor
temperature/outdoor temperature.
3. Press the + key third time and the display will return to the normal display.
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 clock. However, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours. The atomic clock will search for a signal
every night when reception is best. The WWVB radio station derives its signal from the NIST atomic
clock in Boulder, Colorado. A team of atomic physicists continually measures every second of every
day to an accuracy of ten billionths of a second a day. These physicists have created an international
standard, measuring a second as 9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. This
atomic clock regulates the WWVB transmitter.
Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock
display will start flashing in the top center of the LCD. This indicates that the clock has detected a
radio signal and is trying to receive it. When the time code is received, the WWVB tower becomes
permanently lit and the time will be displayed.
If the tower icon flashes, but does not set the time or the WWVB tower does not appear at all, then
please take note of the following:
•Recommended distance to any interfering sources like computer monitors or TV sets is a
minimum of 6 feet (2 meters).
•Within ferro-concrete rooms (basements, superstructures), the received signal is naturally
weakened. In extreme cases, please place the unit close to a window and/ or point its front or back
towards the Fort Collins, Colorado, transmitter.
•During nighttime, the atmospheric disturbances are usually less severe and reception is possible
in most cases. A single daily reception is adequate to keep the accuracy deviation below 1
second.
Note:
In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting distance,
etc.), the time can be manually set (please refer to notes on Manual time setting).

433MHz RECEPTION CHECK FOR OUTDOOR TEMPERATURE TRANSMITTER
The atomic clock will receive the temperature data within 4 minutes. If the temperature data is not
being 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 82 feet (25 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 (DAY, SECONDS, AND TEMPERATURES)
There are three possible display modes to view the day, seconds, and temperatures.
The month&date/weekday/indoor temperature/outdoor temperature is the default.
To change the display:
1. Press the + key. The display should now show the month&date/weekday/seconds/ indoor
temperature.
2. Press the + key a second time and the display will now show the month&date/seconds/indoor
temperature/outdoor temperature.
3. Press the + key third time and the display will return to the normal display.
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 clock. However, due to the nature of the Earth’s
Ionosphere, reception is very limited during daylight hours. The atomic clock will search for a signal
every night when reception is best. The WWVB radio station derives its signal from the NIST atomic
clock in Boulder, Colorado. A team of atomic physicists continually measures every second of every
day to an accuracy of ten billionths of a second a day. These physicists have created an international
standard, measuring a second as 9,192,631,770 vibrations of a Cesium 133 atom in a vacuum. This
atomic clock regulates the WWVB transmitter.
Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock
display will start flashing in the top center of the LCD. This indicates that the clock has detected a
radio signal and is trying to receive it. When the time code is received, the WWVB tower becomes
permanently lit and the time will be displayed.
If the tower icon flashes, but does not set the time or the WWVB tower does not appear at all, then
please take note of the following:
•Recommended distance to any interfering sources like computer monitors or TV sets is a
minimum of 6 feet (2 meters).
•Within ferro-concrete rooms (basements, superstructures), the received signal is naturally
weakened. In extreme cases, please place the unit close to a window and/ or point its front or back
towards the Fort Collins, Colorado, transmitter.
•During nighttime, the atmospheric disturbances are usually less severe and reception is possible
in most cases. A single daily reception is adequate to keep the accuracy deviation below 1
second.
Note:
In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting distance,
etc.), the time can be manually set (please refer to notes on Manual time setting).

MOON PHASE
The Moon Phases, and their corresponding dates appear in LCD 2. There are 12 visible Moon
Phases that will show in the LCD 2:
MOON PHASES FOR WS-8117
New Moon Small Waxing Large Waxing First Quarter Small Waxing Large Waxing
Crescent Crescent Gibbous Gibbous
FullMoon Large Waning Small Waning Last Quarter Large Waning Small Waning
Gibbous Gibbous Crescent Crescent
POSITIONING
Before permanently mounting ensure that the atomic clock is able to receive WWVB signals from the
desired location. Also, extreme and sudden changes in temperature will decrease the accuracy of the
atomic clock, and changes in elevation will result with inaccurate temperatures readings for the next
12 to 24 hours. These changes will require a 12 to 24 hour wait before obtaining reliable data.
To achieve a true temperature reading, avoid mounting where direct sunlight can reach the outdoor
temperature transmitter. It is recommended to mount the outdoor temperature transmitter on a
North-facing wall or in any well shaded area. The maximum transmitting range is 82 feet (25 meters)
obstacles such as walls, concrete, and large metal objects can reduce the range.
Place both units in their desired location, and wait approximately 10 minutes before permanently
mounting to ensure that there is proper reception. The outdoor temperature transmitter is not
waterproof and should not be placed anywhere it will become submerged in water or be directly in the
rain.
POSITIONING THE ATOMIC CLOCK:
There are two possible ways to mount the atomic clock:
•use of the foldout table stands, or
•wall mounting
FOLDOUT TABLE STAND
The Foldout table stand legs are located on the backside, at the
lower corners, and on both sides of the battery cover. The hinges
are towards the edges of the atomic clock, and the ends (with no
hinge) need to be folded out towards the edge. Once the Foldout
table stands are extended, place the atomic clock in an appropriate
location.
WALL MOUNTING
1) Using a straightedge, horizontally space at 2-3/4 of an inch (70 mm) three
screw positions on a wall.
2) Install three mounting screws (not included) into a wall within transmission
range—leaving approximately 3/16 of an inch (5mm) extended from the wall.
3) Place the atomic clock onto the screws, using the hanging holes on the
backside. Gently pull the atomic clock down to lock the screws into place.
Note:
Always ensure that the atomic clock locks onto the screws before releasing.

MOON PHASE
The Moon Phases, and their corresponding dates appear in LCD 2. There are 12 visible Moon
Phases that will show in the LCD 2:
MOON PHASES FOR WS-8117
New Moon Small Waxing Large Waxing First Quarter Small Waxing Large Waxing
Crescent Crescent Gibbous Gibbous
FullMoon Large Waning Small Waning Last Quarter Large Waning Small Waning
Gibbous Gibbous Crescent Crescent
POSITIONING
Before permanently mounting ensure that the atomic clock is able to receive WWVB signals from the
desired location. Also, extreme and sudden changes in temperature will decrease the accuracy of the
atomic clock, and changes in elevation will result with inaccurate temperatures readings for the next
12 to 24 hours. These changes will require a 12 to 24 hour wait before obtaining reliable data.
To achieve a true temperature reading, avoid mounting where direct sunlight can reach the outdoor
temperature transmitter. It is recommended to mount the outdoor temperature transmitter on a
North-facing wall or in any well shaded area. The maximum transmitting range is 82 feet (25 meters)
obstacles such as walls, concrete, and large metal objects can reduce the range.
Place both units in their desired location, and wait approximately 10 minutes before permanently
mounting to ensure that there is proper reception. The outdoor temperature transmitter is not
waterproof and should not be placed anywhere it will become submerged in water or be directly in the
rain.
POSITIONING THE ATOMIC CLOCK:
There are two possible ways to mount the atomic clock:
•use of the foldout table stands, or
•wall mounting
FOLDOUT TABLE STAND
The Foldout table stand legs are located on the backside, at the
lower corners, and on both sides of the battery cover. The hinges
are towards the edges of the atomic clock, and the ends (with no
hinge) need to be folded out towards the edge. Once the Foldout
table stands are extended, place the atomic clock in an appropriate
location.
WALL MOUNTING
1) Using a straightedge, horizontally space at 2-3/4 of an inch (70 mm) three
screw positions on a wall.
2) Install three mounting screws (not included) into a wall within transmission
range—leaving approximately 3/16 of an inch (5mm) extended from the wall.
3) Place the atomic clock onto the screws, using the hanging holes on the
backside. Gently pull the atomic clock down to lock the screws into place.
Note:
Always ensure that the atomic clock locks onto the screws before releasing.

POSITIONING THE OUTDOOR TEMPERATURE TRANSMITTER
The outdoor temperature transmitter can be mounted in two ways:
•with the use of screws, or using the adhesive tape.
MOUNTING WITH SCREWS
1) Remove the mounting bracket from the outdoor temperature transmitter.
2) Place the mounting bracket over the desired location. Through the three
screw holes of the bracket, mark the mounting surface with a pencil.
3) Where marked, start the screw holes into mounting surface.
4) Screw mounting bracket onto the mounting surface. Ensure that the
screws are flush with the bracket.
MOUNTING WITH ADHESIVE TAPE
1) With a nonabrasive solution, clean and dry the back of the mounting
bracket and the mounting surface to ensure a secure hold. The
mounting surface should be smooth and flat.
2) Remove the protective strip from one side of the tape. Adhere the
tape to the designated area on the back of the mounting bracket.
3) Remove the protective strip from the other side of the tape. Position
the outdoor temperature transmitter in the desired location, ensuring
that the atomic clock can receive the signal.
TROUBLESHOOTING
Problem: The LCD is faint.
Solution: 1) Replace the batteries.
Problem: No reception of WWVB signal
Solution: 1) It may help reception to face the front of the atomic clock in the general
direction of Ft. Collins, Colorado.
2) Wait overnight for signal.
3) Be sure the atomic clock is at least 6 feet (2 meters) from any electrical
devices, i.e. TV sets, computers, or other radio controlled clocks.
4) Remove batteries for five minutes, reinsert and leave the unit alone
overnight without pressing any keys.
Problem: Hour is incorrect (minute and date are correct).
Solution: 1) Be sure the correct time zone and daylight saving time are selected.
Problem: "OFL“ appears in the indoor temperature section of the LCD
Solution: 1) Move the atomic clock to an area with warmer or cooler surrounding
temperature. Current surrounding temperatures are outside measuring
range.
Problem: "--.-" appears in the outdoor temperature section of the LCD.
Solution: 1) Remove the batteries of both units for one minute, then reinsert them
again. Make sure the batteries are new and fresh.
2) Move the atomic clock closer to the transmitter or place the transmitter
closer to the atomic clock. Make sure the clock is at a receivable range
from the transmitter.
3) Move the units to another location. Interferences from other electrical
devices operating on the same signal frequency (433MHz) may prevent
correct signal transmission and reception.
Problem: "OFL“ appears in the outdoor temperature section of the LCD.
Solution: 1) Wait until the current surrounding temperature cools down or increases.
Current temperature is outside of the measuring range of the transmitter.
The outdoor temperature will be displayed again once the current
surrounding temperature is within the range of the transmitter.

POSITIONING THE OUTDOOR TEMPERATURE TRANSMITTER
The outdoor temperature transmitter can be mounted in two ways:
•with the use of screws, or using the adhesive tape.
MOUNTING WITH SCREWS
1) Remove the mounting bracket from the outdoor temperature transmitter.
2) Place the mounting bracket over the desired location. Through the three
screw holes of the bracket, mark the mounting surface with a pencil.
3) Where marked, start the screw holes into mounting surface.
4) Screw mounting bracket onto the mounting surface. Ensure that the
screws are flush with the bracket.
MOUNTING WITH ADHESIVE TAPE
1) With a nonabrasive solution, clean and dry the back of the mounting
bracket and the mounting surface to ensure a secure hold. The
mounting surface should be smooth and flat.
2) Remove the protective strip from one side of the tape. Adhere the
tape to the designated area on the back of the mounting bracket.
3) Remove the protective strip from the other side of the tape. Position
the outdoor temperature transmitter in the desired location, ensuring
that the atomic clock can receive the signal.
TROUBLESHOOTING
Problem: The LCD is faint.
Solution: 1) Replace the batteries.
Problem: No reception of WWVB signal
Solution: 1) It may help reception to face the front of the atomic clock in the general
direction of Ft. Collins, Colorado.
2) Wait overnight for signal.
3) Be sure the atomic clock is at least 6 feet (2 meters) from any electrical
devices, i.e. TV sets, computers, or other radio controlled clocks.
4) Remove batteries for five minutes, reinsert and leave the unit alone
overnight without pressing any keys.
Problem: Hour is incorrect (minute and date are correct).
Solution: 1) Be sure the correct time zone and daylight saving time are selected.
Problem: "OFL“ appears in the indoor temperature section of the LCD
Solution: 1) Move the atomic clock to an area with warmer or cooler surrounding
temperature. Current surrounding temperatures are outside measuring
range.
Problem: "--.-" appears in the outdoor temperature section of the LCD.
Solution: 1) Remove the batteries of both units for one minute, then reinsert them
again. Make sure the batteries are new and fresh.
2) Move the atomic clock closer to the transmitter or place the transmitter
closer to the atomic clock. Make sure the clock is at a receivable range
from the transmitter.
3) Move the units to another location. Interferences from other electrical
devices operating on the same signal frequency (433MHz) may prevent
correct signal transmission and reception.
Problem: "OFL“ appears in the outdoor temperature section of the LCD.
Solution: 1) Wait until the current surrounding temperature cools down or increases.
Current temperature is outside of the measuring range of the transmitter.
The outdoor temperature will be displayed again once the current
surrounding temperature is within the range of the transmitter.

CARE AND MAINTENANCE:
•Avoid placing the units in areas prone to vibration and shock as these may cause damage.
•Avoid areas where the units can be exposed to sudden changes in temperature, i.e. direct
sunlight, extreme cold and wet/moist conditions as these will lead to rapid changes which reduces
the accuracy of readings.
•When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring
agents.
•Do not submerge the units into water.
•Immediately remove all low powered batteries to avoid leakage and damage. Replace only with
new batteries of the recommended size.
•Do not make any repairs to the units. Please return it to the original point of purchase. Opening
and tampering with the units may invalidate the warranty.
SPECIFICATIONS:
Temperature measuring range
Indoor: +32ºF to +122ºF with 0.2ºF resolution
0ºC to +50ºC with 0.1ºC resolution
("OFL" displayed if outside this range)
Outdoor : -21.8ºF to +140ºF with 0.2ºF resolution
-29.9ºC to +59.9ºC with 0.1ºC resolution
("OFL“ displayed if outside this range)
Temperature checking interval
Indoor: every 10 seconds
Outdoor: every 5 minutes
Transmission distance: maximum 82 feet (25 meters) in open field, depending upon surrounding
structures, mounting location and possible interfering sources
Power source (Alkaline batteries recommended)
Atomic clock : 2 x AA, 1.5V batteries
Transmitter: 2 x AA, 1.5V batteries
Battery life: about 12 months
Dimensions (L x W x H)
Atomic clock : 11.41“ x 0.98“ x 7.48“ / 290 x25 x190mm
Transmitter: 1.57“ x 0.9“ x 5.04“ / 40 x 23 x 128 mm
LIABILITY DISCLAIMER:
•The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any
consequences that occur should an inaccurate reading take place.
•This product is only designed for use in the home or office.
•This product is not to be used for medical purposes or for public information.
•The specifications of this product may change without prior notice.
•This product is not a toy. Keep out of the reach of children.
•No part of this manual may be reproduced without written authorization of the manufacturer.
BATTERIES CHANGE:
For best performance, batteries should be replaced at least once a year to maintain the best running
accuracy. Ensure that the batteries used are new and the correct size.
Please help in the preservation of the environment and return used batteries to an
authorized depot.

CARE AND MAINTENANCE:
•Avoid placing the units in areas prone to vibration and shock as these may cause damage.
•Avoid areas where the units can be exposed to sudden changes in temperature, i.e. direct
sunlight, extreme cold and wet/moist conditions as these will lead to rapid changes which reduces
the accuracy of readings.
•When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring
agents.
•Do not submerge the units into water.
•Immediately remove all low powered batteries to avoid leakage and damage. Replace only with
new batteries of the recommended size.
•Do not make any repairs to the units. Please return it to the original point of purchase. Opening
and tampering with the units may invalidate the warranty.
SPECIFICATIONS:
Temperature measuring range
Indoor: +32ºF to +122ºF with 0.2ºF resolution
0ºC to +50ºC with 0.1ºC resolution
("OFL" displayed if outside this range)
Outdoor : -21.8ºF to +140ºF with 0.2ºF resolution
-29.9ºC to +59.9ºC with 0.1ºC resolution
("OFL“ displayed if outside this range)
Temperature checking interval
Indoor: every 10 seconds
Outdoor: every 5 minutes
Transmission distance: maximum 82 feet (25 meters) in open field, depending upon surrounding
structures, mounting location and possible interfering sources
Power source (Alkaline batteries recommended)
Atomic clock : 2 x AA, 1.5V batteries
Transmitter: 2 x AA, 1.5V batteries
Battery life: about 12 months
Dimensions (L x W x H)
Atomic clock : 11.41“ x 0.98“ x 7.48“ / 290 x25 x190mm
Transmitter: 1.57“ x 0.9“ x 5.04“ / 40 x 23 x 128 mm
LIABILITY DISCLAIMER:
•The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any
consequences that occur should an inaccurate reading take place.
•This product is only designed for use in the home or office.
•This product is not to be used for medical purposes or for public information.
•The specifications of this product may change without prior notice.
•This product is not a toy. Keep out of the reach of children.
•No part of this manual may be reproduced without written authorization of the manufacturer.
BATTERIES CHANGE:
For best performance, batteries should be replaced at least once a year to maintain the best running
accuracy. Ensure that the batteries used are new and the correct size.
Please help in the preservation of the environment and return used batteries to an
authorized depot.

WARRANTY INFORMATION
La Crosse Technology provides a 1-year warranty on this atomic clock. Contact La Crosse
Technology immediately upon discovery of any defects covered by this warranty.
Before sending the atomic clock in for repairs, contact La Crosse Technology. The atomic clock will
be repaired or replaced with the same or similar model.
This warranty does not cover any defects resulting from improper use, unauthorized repairs, faulty
batteries, or the clocks inability to receive a signal due to any source of interference.
LA CROSSE TECHNOLOGY WILL NOT ASSUME LIABILITY FOR INCIDENTAL,
CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE
OPERATION OR MALFUNCTION OF THIS TEMPERATURE CLOCK. THIS PRODUCT IS NOT TO
BE USED FOR MEDICAL PURPOSES OR FOR PUBLIC INFORMATION. THIS PRODUCT IS NOT
A TOY. KEEP OUT OF CHILDRENS’ REACH.
This warranty gives you specific legal rights. You may also have other rights specific to your State.
Some States do not allow the exclusion of consequential or incidental damages; therefore the above
exclusion of limitation may not apply to you.
For warranty work, technical support, or information contact:
La Crosse Technology, Ltd
2809 Losey Blvd. S.
La Crosse, WI 54601
Phone: [phone]
Fax: [phone]
e-mail
[email protected]
(warranty work)
[email protected]
(information on other products)
Or visit us on the internet at
www.lacrossetechnology.com
FCC ID: OMO-01RX (receiver)
OMO-01TX (transmitter)
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO
THE FOLLOWING TWO CONDITIONS:
1. THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND
2. THIS DEVICE MUST ACCEPT INTERFERENCE RECEIVED, INCLUDING INTERFERENCE
THAT MAY CAUSE UNDESIRED OPERATION.

WARRANTY INFORMATION
La Crosse Technology provides a 1-year warranty on this atomic clock. Contact La Crosse
Technology immediately upon discovery of any defects covered by this warranty.
Before sending the atomic clock in for repairs, contact La Crosse Technology. The atomic clock will
be repaired or replaced with the same or similar model.
This warranty does not cover any defects resulting from improper use, unauthorized repairs, faulty
batteries, or the clocks inability to receive a signal due to any source of interference.
LA CROSSE TECHNOLOGY WILL NOT ASSUME LIABILITY FOR INCIDENTAL,
CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE
OPERATION OR MALFUNCTION OF THIS TEMPERATURE CLOCK. THIS PRODUCT IS NOT TO
BE USED FOR MEDICAL PURPOSES OR FOR PUBLIC INFORMATION. THIS PRODUCT IS NOT
A TOY. KEEP OUT OF CHILDRENS’ REACH.
This warranty gives you specific legal rights. You may also have other rights specific to your State.
Some States do not allow the exclusion of consequential or incidental damages; therefore the above
exclusion of limitation may not apply to you.
For warranty work, technical support, or information contact:
La Crosse Technology, Ltd
2809 Losey Blvd. S.
La Crosse, WI 54601
Phone: [phone]
Fax: [phone]
e-mail
[e-mail]
(warranty work)
[e-mail]
(information on other products)
Or visit us on the internet at
www.lacrossetechnology.com
FCC ID: OMO-01RX (receiver)
OMO-01TX (transmitter)
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO
THE FOLLOWING TWO CONDITIONS:
1. THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND
2. THIS DEVICE MUST ACCEPT INTERFERENCE RECEIVED, INCLUDING INTERFERENCE
THAT MAY CAUSE UNDESIRED OPERATION.

All rights reserved. This handbook must not be reproduced in any form, even in excerpts, or
duplicated or processed using electronic, mechanical or chemical procedures without written
permission of the publisher.
This handbook may contain mistakes and printing errors. The information in this handbook is
regularly checked and corrections made in the next issue. We accept no liability for technical
mistakes or printing errors, or their consequences.
All trademarks and patents are acknowledged.
WS-8117
Atomic Clock With Outdoor Temperature and Moon Phase
Instruction Manual