La Crosse Technology Radio Controlled Projection Alarm WT-5110 User manual

WT-5110
433 MHz
Radio Controlled Projection Alarm
Instruction Manual

2
TABLE OF CONTENTS
Topic Page
Inventory of Contents/ Additional Equipment 3
About WWVB 3
Quick Set-Up Guide 4
Detailed Set-Up Guide
Battery Installation 5
Program Mode
Programming Sequence 6
Function Buttons 6
Manual Time Setting 6
Time Zone Setting 6-7
Daylight Saving Time (DST) Setting 7
Features & Operations
Features 8
Radio-Controlled Time 8
Projection 8
LED Backlight 9
Indoor Temperature 9
Indoor Humidity 9
Time Alarm 9
Changing Display Mode 10
Maintenance & Care 10
Troubleshooting 10
Specifications 11
Warranty and Contact Information 12-13

3
INVENTORY OF CONTENTS
1) WT-5110 Alarm Clock
2) AC adapter/transformer
3) Instruction manual and warranty card.
ADDITIONAL EQUIPMENT (not included)
1) Two fresh 1.5V AA batteries (optional for projection alarm clock)
FEATURES OF PROJECTION ALARM
Operation of these features is in section III
1. Radio-controlled time
2. Projection of time
3. LED backlight
4. Display of indoor temperature/humidity or alarm time
5. Time alarm
ABOUT WWVB (Radio Controlled Time)
The NIST (National Institute of Standards and Technology—Time and Frequency Division) WWVB
radio station 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 projection alarm. However, due to the nature of the Earth’s Ionosphere,
reception is very limited during daylight hours. The projection alarm will search for a signal every
night when reception is best.
The WWVB radio station receives the time data from the NIST Atomic clock in Boulder, Colorado. A
team of atomic physicists is continually measuring every second, of every day, to an accuracy of ten
billionths of a second per 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. For more detail, visit
http://www.boulder.nist.gov/timefreq.htm. To listen to the NIST time, call [phone]. This number
will connect you to an automated time, announced at the top of the minute in “Coordinated Universal
Time”, which is also known as Greenwich Mean Time (GMT). This time does not follow Daylight
Saving Time changes. After the top of the minute, a tone will sound for every second. It is possible
that your projection alarm may not be exactly on the second due to the variance in the quartz.
However, the clock will adjust the quartz timing over the course of several days to be very accurate;
under 0.10 seconds per day.

4
QUICK SET-UP GUIDE
Hint: Use good quality Alkaline Batteries and avoid rechargeable batteries.
1. We recommend beginning the set-up procedure at night when the
WWVB signal is easiest to receive.
2. It is also highly recommended to set the projection alarm in a window
or other area free of interference in the area of your home that is
closest to Colorado (the source of the WWVB signal).
NOTE: The above steps are not required but can help the projection
alarm receive the signal faster.
3. Place the batteries into the projection alarm clock.
4. DO NOT PRESS ANY BUTTONS FOR 15 MINUTES.
NOTE: It is important to not press any buttons after inserting batteries as
this will interrupt the WWVB search sequence.
In this time the display will show both the indoor temperature and humidity. If the
station does not display both indoor temperature and indoor humidity after the 15
minutes please retry the set up as stated above. After both indoor temperature
and indoor humidity are displayed for 15 minutes you can place your projection
alarm in your desired location.
To complete the set up of your temperature station after the 15 minutes have
passed please follow the steps beginning on page 6.

5
DETAILED SET-UP GUIDE
I. BATTERY INSTALLATION
A. PROJECTION ALARM
1. Remove the battery cover.
2. Observe the correct polarity, and install 2 AA batteries.
3. In addition or instead of inserting batteries, the AC adapter can be used. Simply plug
the adapter into the receptacle on the
underneath of the alarm clock and then plug
in adapter.
4. Replace the battery cover.
5. The projector will activate and remain on if
the alarm clock is plugged in. If only batteries
are used, the projector will only be activated
when a button is pressed. The projection is a
red light, not harmful under normal usage,
although care should be taken to not look
directly into the light.
Notes:
•After the batteries have been installed a tone will sound, and the LCD (Liquid
Crystal Display) will activate.
•The indoor temperature/humidity will be displayed. Also, the time will appear as
“-:--”.
•The WWVB search is automatically initiated, and a tower icon appears and
flashes with the time colon (no tower icon will appear if the WWVB is too weak to
be detected, and the time display will remain on “-:--”).
•While the WWVB search is being conducted various numbers will appear in the
time display.
•After 15 minutes, the projection alarm will either display the WWVB time, or
discontinue the search if the time is not found. If the search is cancelled “-:--” will
remain in the time LCD.
•The projection alarm will conduct a WWVB search every hour until the first signal
is found.
•Once the WWVB time is found, a search is automatically conducted nightly at
midnight.
•If the signal is found at midnight, the tower icon will remain, if not, another search
will take place every hour (until 6:00 am) until the signal is found successfully.
•If no signal is found during this period, the tower icon will not appear and the
clock will search again at 12:00 am the next night.
•The radio-controlled time receiver is located on the bottom side of the projection
alarm. When using the AC adaptor be sure to keep the adapter cord away from
the bottom side of the unit as if the wire is too close it can cause weakened
reception sensitivity.
AC adapter
receptacle

6
II. PROGRAM MODE
To enter the Program Mode hold down the “MODE/MIN” button for 3 seconds, until the time
flashes in the top of the display. The Program Mode Guide is laid out in a manner that allows
you to program each function separately, or you can follow the instructions entirely to program
the projection alarm. Complete programming is usually done for the initial set-up, and will
require you to skip step 1 and 2 of programming sections D and E. To exit the setting mode
simply wait approximately 10 seconds for the projection alarm to automatically return to normal
operation.
A. PROGRAMMING SEQUENCE
1. Manual Time Display
2. Time Zone Setting
3. Daylight Saving Time On/Off
B. FUNCTION BUTTONS
There are 3 function buttons located on the front of the projection alarm and one on the top.
The function buttons are labeled: AL/HOUR, light direction icon, MODE/MIN, and SNOOZE
(the top bar).
C. MANUAL TIME SETTING
1. Hold down the “MODE/MIN” button for 3 seconds, the time will flash in the Time LCD.
2. Press and release the “AL/HOUR” button to advance the hours and press and release
the “MODE/MIN” button to advance the minutes.
NOTE: “A.M.” or “P.M.” will be displayed to the left of the time to help identify the time.
3. Press and release the “SNOOZE” button to confirm the time setting and to advance to
DST (Daylight Saving Time) setting.
D. TIME ZONE SETTING
1. Hold down the “MODE/MIN” button for 3 seconds, the time will flash in the Time LCD.
2. Press and release the “SNOOZE” button to advance to the time zone selection.
3. In the indoor temperature/humidity section of the LCD the time zone will flash.
Mode Button (toggles between
indoor temp/hum and alarm
time. Also adjusts minutes in
time setting mode
Alarm Button (also adjusts
the hours in time setting
mode
)
Display Direction

7
4. Press and release the “MODE/MIN” button to select the appropriate time zone. There
are 24 time zones to choose from (based relative to the international time standard of
GMT (“Greenwich Mean Time).
NOTE: The U.S. time zones will show abbreviations as opposed to the numerical time
zone indicator. For example Eastern Time will display “ET” when the Eastern Time
Zone is selected
5. Press and release the “SET” button to confirm the time zone setting and to advance to
the DST (Daylight Saving Time) setting.
E. DST (DAYLIGHT SAVING 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”.
1. Hold down the “MODE/MIN” button for 3 seconds, the time will flash in the Time LCD.
2. Press and release the “SNOOZE” button twice to advance to the DST setting.
3. “DST” will appear in the indoor temperature/humidity LCD and “ON” or “OFF” will flash
in the time LCD.
4. Press and release the “MODE/MIN” button to toggle between DST ON and OFF..
5. Press and release the “SNOOZE” button to confirm the DST setting and complete the
set-up sequence.
-4h Atlantic Time
-5h Eastern Time (default setting)
-6h Central Time
-7h Mountain Time
-8h Pacific Time
-9h Alaskan Time
-10h Hawaiian Time
-11h, -12h Next two time zones West of HAW
0h Greenwich Mean Time
-1h, -2h, -3h Three time zones West of GMT

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III. FEATURES & OPERATIONS
A. FEATURES
1. Radio-controlled time
2. Projection of time
3. LED backlight
4. Display of indoor temperature/humidity or alarm time
5. Time alarm
B. RADIO-CONTROLLED TIME
1. The projection alarm will automatically search for the time signal upon initial set-up
and every night.
2. When the signal is being received, there will be a “tower” icon flashing to the left of the
time display.
3. When the time signal has been received successfully, the tower icon will remain
steady until midnight.
4. The NIST (National Institute of Standards and Technology—Time and Frequency
Division) WWVB radio station 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 projection
alarm.
5. Due to the nature of the Earth’s Ionosphere, reception is very limited during daylight
hours. The projection alarm will search for a signal every night when reception is best.
6. The WWVB radio station receives the time data from the NIST Atomic clock in
Boulder, Colorado. A team of atomic physicists is continually measuring every
second, of every day, to an accuracy of ten billionths of a second per 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.
7. For more detail, visit http://www.boulder.nist.gov/timefreq.htm. To listen to the NIST
time, call [phone]. This number will connect you to an automated time,
announced at the top of the minute in “Coordinated Universal Time”, which is also
known as Greenwich Mean Time (GMT). This time does not follow Daylight Saving
Time changes. After the top of the minute, a tone will sound for every second.
8. It is possible that your projection alarm may not be exactly on the second due to the
variance in the quartz. However, the clock will adjust the quartz timing over the course
of several days to be very accurate; under 0.10 seconds per day.
C. PROJECTION OF TIME
1. When plugged into an AC outlet, the projection alarm can continuously project the
time.
2. When operating on batteries alone, the projection alarm will only project when the
snooze button is pressed or the alarm is sounding.
3. The projection will auto-focus for display from three to six feet away. A dark
surrounding will be necessary to clearly see the projection.
4. The direction of the display can also be rotated 360°in 90°increments by pressing the
directional button. There is no display on the LCD that signifies the direction.
5. The projector case can be rotated 180°to further help orient the projected display.

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D. LED BACKLIGHT
1. The projection alarm has an LED backlight designed for night-viewing. This will light
up for 4 seconds whenever the snooze button is pressed.
2. The LED backlight cannot be turned on constantly; this would drain the batteries.
E. INDOOR TEMPERATURE
1. The projection alarm measures indoor temperature with an internal sensor.
2. This temperature is displayed in °F.
3. The indoor temperature will take time to adjust to the surrounding temperature as the
sensor is inside the case.
F. INDOOR HUMIDITY
1. The projection alarm measures indoor humidity with an internal sensor.
2. This humidity is displayed as a percentage (%).
3. The indoor humidity will take time to adjust to the surrounding humidity as the sensor
is inside the case.
G. TIME ALARM
1. SETTING THE ALARM
a. Press and hold “AL/HOUR” button for three seconds until the alarm time is
flashing.
b. Press and release “AL/HOUR” to advance the hour, and “MODE/MIN” to
advance the minute. The time will display “PM” if set to PM, and nothing if set to
AM.
c. The projection alarm will revert to normal operation when no buttons are pressed
for 15 seconds. The alarm is now set and activated.
2. ACTIVATING/DEACTIVATING THE
ALARM
a. After entering the alarm setting
mode, the alarm is activated.
b. To toggle between activating
and deactivating the alarm,
press the “AL/HOUR” button
briefly. “(((○)))”will be displayed
above the time display when the
alarm is activated.
3. TURNING ALARM OFF (WHILE
SOUNDING)
a. While the alarm is sounding, press and release the “SNOOZE” bar to disable the
alarm for 10 minutes.
b. After the SNOOZE bar is pressed the alarm icon will flash.
c. To disable the alarm for 24 hours, press and release any button other than
SNOOZE or display direction buttons.
NOTE: The alarm will sound for 84 seconds if the “SNOOZE” button is not pressed.
The alarm speeds up twice, once after 20 seconds and again after 50 seconds.

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H. CHANGING DISPLAY MODE (INDOOR TEMPERATURE/HUMIDITY OR ALARM TIME)
There are two possible display modes in the indoor temperature/humidity section of the LCD
(lower left); indoor temperature and humidity or alarm time. To change the display press and
release the “MODE/MIN” button to toggle between the two modes.
IV. MAINTENANCE & CARE
A. Extreme temperatures, vibrations, and shock should be avoided to prevent damage to the
units.
B. Clean displays and units with a soft, damp cloth. Do not use solvents or scouring agents—
they may mark and damage the displays and casings.
C. Do not submerge in water.
D. Immediately remove all low powered batteries to avoid leakage and damage.
E. Replace with new batteries only, and of recommended size.
F. Opening the casings invalidates the warranty. Do not try to repair the units. Contact
La Crosse Technology for Repairs.
TROUBLESHOOTING
Problem: The Projection is faint
Solution: 1) Use AC adapter 2) Darken surroundings
3) Use fresh batteries (if AC is not used)
Problem: The LCD is faint.
Solution: Replace the batteries.
Problem: “OFL” appears in the indoor temperature LCD.
Solution: 1) Move unit to an area with warmer or cooler surrounding
temperature.
2) Current surrounding temperatures are outside measuring range.
Problem: No reception of WWVB signal.
Solution:
1) It may help reception to face the front of the projection alarm in the
general direction of Ft. Collins, Colorado.
2) Wait overnight for signal.
3) Be sure the projection alarm is at least 6 feet 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 buttons.
5) If problems persist contact La Crosse Technology.
Problem: Hour is incorrect (minute is correct).
Solution: Be sure correct time zone and daylight saving time are selected.
Problem: “--.-” appears in outdoor temperature LCD
Solution: 1) Check batteries in remote 2) If batteries are replaced in remote, the unit must be re-started.
Remove all batteries, and then follow start up procedure.
Note: For any questions not answered, contact La Crosse Technology with the contact information
found at the end of this instructional manual.