WT-5442 with TX6 Transmitter
433 MHz Radio Controlled Projection Alarm
Instruction Manual
1
FEATURES OF PROJECTION ALARM
Operation of these features are in section III.
1. Radio-controlled time and date
2. Projection of time and/or remote temperature
3. EL backlight
4. Six modes of date/seconds/temperature display
5. Indoor temperature
6. Remote outdoor temperature
7. Dual alarms
1) Adjustable snooze
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,
(303)499-7111. 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.
QUICK SET-UP GUIDE
1) Insert two AA batteries into the remote transmitter.
2) Insert three AA batteries into the projection alarm and/or plug into wall.
Note: When starting or restarting your projection alarm the remote
transmitter must be started first and then your alarm. After power is
supplied (either battery or AC) ensure that no buttons are pressed for 10
minutes. This will allow time for the projection alarm to communicate with
the remote transmitter as well as receive the WWVB signal.
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Note: When using the AC adaptor, plug into the projection alarm first and
then into the electrical outlet (this will help avoid pressing any buttons
inadvertently).
3) Wait 10 minutes for WWVB reception and remote temperature.
4) If there is no WWVB reception, manually set the time and date
(instructions in the Program Mode).
5) Program the settings.
6) Mount the WT-5442 in a suitable location, where WWVB and
transmitter signals can be received.
7) Mount the transmitter where remote temperature measurement is
desired (on the North side of a house for example).
Note: The remote transmitter is weather resistant but not waterproof.
High humidity and mist will not damage the transmitter but direct rain will.
The maximum range between the transmitter and projection alarm is 80ft.
open air (no obstructions). Any resistance (i.e. walls, furniture, etc)
between the two will decrease the effective operating range.
8) 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.
9) See the “Features” section III. for instructions on projection direction,
etc.
DETAILED SET-UP GUIDE
I. BATTERY INSTALLATION
A. REMOTE TEMPERATURE TRANSMITTER
1. Remove the battery cover. Observing the correct polarity,
install 2 AA batteries. The batteries will fit tightly (to avoid
start-up problems make sure that they do not spring free
during installation).
2. Replace the battery cover.
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B. PROJECTION ALARM
1. Remove the battery cover.
2. Observe the correct polarity, and install 3
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 the adapter into the outlet.
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.
Note: After power has been supplied (battery or AC) a tone will sound,
and the LCD (Liquid Crystal Display) will activate. The indoor
temperature and the remote temperature will be displayed (within three
to six minutes). 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, which is typical during daylight hours and the time display will
remain on “-:--”). While the WWVB search is being conducted various
numbers will appear in the time display. After 10 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.
II.
PROGRAM MODE
To enter the Program Mode hold down the “SET” button for 1 second, until
the time zone (“-5” default) flashes in the lower left. 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 of programming sections “D”
through “H”. Press the “SNOOZE” button at any time to exit the Program
Mode, or wait approximately 15 seconds for the Projection Alarm to
automatically return to normal operation.
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A. PROGRAMMING SEQUENCE
Default (Factory) Setting
1. Time Zone Setting
2. Daylight Saving Time ON/OFF
3. Adjustable Snooze
4. Hour Setting
-5 (eastern standard time)
ON
10 Minutes
12: AM
:00
5. Minute Setting
6. Year Setting
7. Month Setting
8. Date Setting
01 (2001)
1 (January)
1
9. Day Setting
10.12/24-hour Mode
MO (Monday)
12-hour
B. FUNCTION BUTTONS
There are 8 function buttons; three on the
front, four on the back and one on the top of
the projection alarm. The function buttons
are labeled: ALM1/HOUR, ALM2/MIN, light
intensity icon, DISPL, light direction icon,
SET, MODE/+, and SNOOZE (the top bar).
C. TIME ZONE SETTING
1. Hold down the “SET” button for 1 second, the time zone (“-5” default)
will flash in the Date LCD.
2. Press and release the “Mode/+” button to select the appropriate time
zone. There are 13 time zones to choose from based relative to the
international time standard of GMT (“Greenwich Mean Time”)(shown
as “0h” on display).
3. From –5h to –8h, a US map with the highlighted time zone will also be
displayed to the right of the time display.
4. Press and release the “SET” button to confirm the time zone setting,
and to advance to DST (Daylight saving time) setting.
-4h
Atlantic Time
-5h
-6h
Eastern Time (default setting)
Central Time
-7h
Mountain Time
-8h
Pacific Time
-9h
Alaskan Time
-10h
Hawaiian Time
-11h, -12h
0h
-1h, -2h, -3h
Next two time zones West of HAW
Greenwich Mean Time
Three time zones West of GMT
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D. 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 “SET” button for 1 second (the selected time zone will
flash); press the “SET” button once more until “On” flashes in the lower
left and “DST” flashes in the upper right.
2. Press and release the “Mode/+” button to turn the DST off, as will be
indicated by the display of “OFF” in the time LCD.
Note: Only turn the DST setting off if you live in an area that does not
change time for Daylight Saving Time.
3. Press and release the “SET” button to confirm the DST setting, and to
advance to select the length of the snooze.
E. ADJUSTABLE SNOOZE TIME
Note: The snooze length can be adjusted from 1 minute to 59 minutes.
This duration refers to the length of time the alarm will be disabled when
the “SNOOZE” bar is pressed. If set to “0”, activating the snooze will turn
off the alarm for 24 hours.
1. Hold down the “SET” button for 1 second (the selected time zone will
flash), press the “SET” button 2 more times, until “Sno” appears in the
lower left and duration (“:10” default) flashes in the time LCD.
2. Press and release the “Mode/+” button to advance the snooze time
from 0 (off) to 59 minutes.
3. Press and release the “SET” button to confirm the snooze setting, and
to advance to manually set the time.
F. TIME SETTING
Note: When the WWVB signal is found, that time will over-ride the
manually set time.
1. Hold down the “SET” button for 1 second (the selected time zone will
flash), press the “SET” button 3 more times, until the hour flashes in
the time LCD.
2. Press and release the “Mode/+” button to select the hour. Note: when
setting the hour, “PM” will appear to the left of the hour display, if it is
AM nothing will be displayed.
3. Press and release the “SET” button to confirm the hour setting, and to
advance to select the minutes.
4. Press and release the “+” button to select the minutes.
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5. Press and release the “SET” button to confirm the time setting, and to
advance to manually set the date.
G. DATE SETTING
Note: When the WWVB signal is found, that date will over-ride the
manually set date.
1. Hold down the “SET” button for 1 second (the selected time zone will
flash), press the “SET” button 5 more times, until the year flashes in
the date LCD.
2. Press and release the “Mode/+” button to select the year.
3. Press and release the “SET” button to confirm the year, and to
advance to set the month.
4. The month will flash. Press and release the “+” button to select the
appropriate month.
5. Press and release the “SET” button to confirm the month, and to
advance to set the date.
6. The date will flash. Press and release the “Mode/+” button to select
the appropriate date.
7. Press and release the “SET” button to confirm the date, and to
advance to set the weekday.
8. The weekday will flash. Press and release the “Mode/+” button to
select the appropriate weekday.
9. Press and release the “SET” button to confirm the calendar settings,
and to advance to select either 12 or 24-hour time display.
H. 12/24-HOUR SETTING
Note: Setting to the 24-hour mode (also known as Military Time) will also
change the temperature to display in °C instead of °F.
1. Hold down the “SET” button for 1 second (the selected time zone will
flash), press the “SET” button 9 more times, until the “12” or “24” hour
time display flashes in the time LCD.
2. Press and release the “Mode/+” button to toggle between 12 and 24-
hour time.
3. Press and release the “SET” button to confirm the 12/24-hour time
display, and to return to normal operation.
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III.
FEATURES & OPERATIONS
A. FEATURES
1. Radio-controlled time and date
2. Projection of time and/or remote temperature
3. EL backlight
4. Six modes of date/seconds/temperature display
5. Indoor temperature
6. Remote outdoor temperature
7. Dual alarms
8. Adjustable snooze
9. Forecast icon based on changing air pressure
B. RADIO-CONTROLLED TIME AND DATE
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.
to the NIST time, call (303) 499-7111. 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.
9
C. PROJECTION OF TIME AND/OR REMOTE TEMPERATURE
1. When plugged into an AC outlet, the projection alarm can continuously project the
time and/or remote temperature.
2. When operating on batteries alone, the Projection Alarm will only project when a
button is pressed.
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 default is projecting time (Hour and Minutes). The Projection Alarm can be set to
project the time (M0), remote temperature (M1), or alternating between time and
remote temperature (M2) by pressing and releasing the “DISPL” button. The selected
display mode will flash on the lower middle as “M0”, “M1” or “M2”.
5. 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.
6. The projector case can be rotated 180° to further help orient the projected display.
Display Direction
Light intensity
Display Mode
7. The intensity of the projection can be adjusted to three different settings as well as
turned “off” by pressing the light Intensity button. When turned off, the projection will
only come on when a button is pressed. The intensity cannot be set for the projected
display when set to “off”. When only batteries are used, the intensity setting is set to
“off” with no other options.
D. EL BACKLIGHT
1. The projection alarm has an EL backlight designed for night viewing. This will light up
for 2 seconds whenever a button is pressed.
2. The EL backlight cannot be turned on constantly; this would drain the batteries and
burn out the EL.
E. INDOOR TEMPERATURE
1. The Projection Alarm measures indoor temperature with an internal
sensor.
2. This temperature is displayed in °F or °C, depending on the time
format (12 or 24 hour mode). When in 12-hour format, the temperature
will be in °F. When in 24-hour mode, the temperature will be in °C.
3. The indoor temperature will take time to adjust to the surrounding
temperature as the sensor is inside the case.
4. If the remote temperature is placed next to the Projection Alarm, more
often than not the temperature will not be exact with one another. This
is not a defect, but simply reflects the difference in measuring
methods. The remote temperature is designed for changing
temperature at a wide range.
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F. REMOTE TEMPERATURE
1. The projection alarm comes with a remote temperature sensor. When
set up properly, the projection alarm will receive and display the
remote temperature.
2. It is important to power up the transmitter first, then the Projection
Alarm. If batteries are removed in the remote, the projection alarm
MUST be re-set by removing power sources and re-starting.
3. The remote temperature is measured within the remote transmitter and
transmitted to the projection alarm. If outdoor temperature is desired,
simply mount the remote transmitter outside. It is recommended to
mount the transmitter on the north side of the house away from
sources of heat or cold (away from direct sunlight, windows, vents,
etc.).
4. The range of the transmitter is 80 feet in open space. While the signal
is able to penetrate walls, it will decrease the range. Concrete and
metal structures offer the most resistance.
5. The transmitter should not be mounted on a metal surface.
6. The transmitter and projection alarm should be kept away from other
sources of possible interference including cordless appliances
(telephones, baby monitors), microwave ovens, and other strong
electrical appliances.
7. The remote temperature is displayed in °F or °C, depending on the
time format (12 or 24-hour mode). When in 12-hour format, the
temperature will be in °F. When in 24-hour mode, the temperature will
be in °C.
G. TIME ALARM
The Projection Alarm has two separate alarms for time, “ALM1” and
“ALM2”. The alarms have a different sound; ALM1 increases in volume
after 25 seconds, and again after 50 seconds. ALM2 is a constant volume.
The total duration is 96 seconds for each alarm.
1. SETTING THE ALARM
a. Press and hold “ALM1” OR “ALM2” for two seconds until the alarm
time is flashing.
b. Press and release“ALM1/HOUR” to advance the hour, and
“ALM2/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.
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2. ACTIVATING/DEACTIVATING THE ALARM
a. After entering the alarm-setting mode, the alarm is activated (either
ALM1 or ALM2).
Alarm 2 activated
b. To toggle between activating and
deactivating the alarm, press and
release either the ALM1 or ALM2 briefly.
“(((1)))” or “(((2)))” will be displayed to
the right of the time display when the
alarm is activated.
c. When the snooze bar is pressed, the
display will scroll through the Alarm 1 and 2 times in the middle left.
3. TURNING ALARM OFF (WHILE SOUNDING)
a. While either alarm is sounding, press the SNOOZE bar to disable
the alarm for the set duration (Section II. D.). If the duration is set to
“0”, the alarm will be disabled for 24 hours.
b. After the SNOOZE bar is pressed, the lower left will display the time
remaining on the snooze. The SNOOZE bar may be pressed at any
time to restart the snooze duration.
c. To disable the alarm for 24 hours, press any button on the front of
you projection alarm.
H. CHANGING DISPLAY MODE (DAY, SECONDS, AND TEMPERATURE)
1. There are six possible display modes to view the day, seconds, and temperature
(remote temperature is constantly displayed). To change the display (starting at the
default of Day.Date.Year/Remote Temperature):
2. Press and release the “MODE/+” button. The display should now show
month.day.year/remote temperature
3. Press and release the “Mode/+” button a second time and the display
will now show seconds/remote temperature
4. Press and release the “Mode/+” button a second time and the display
will now show alarm1 time/remote temperature
5. Press and release the “Mode/+” button a second time and the display
will now show alarm2 time/remote temperature
6. Press and release the “Mode/+” button a second time and the display
will now show indoor temperature/remote temperature
7. Press and release the “Mode/+” button a second time and the display
will now show day.month.date/remote temperature
WEATHER FORECAST
1.
The weather forecasting feature is estimated to be 75% accurate.
The weather forecast is based solely upon the change of air pressure over time. The
WT-5442 averages past air-pressure readings to provide an accurate forecast—
creating a necessity to disregard all weather forecasting for 12-24 hours after the unit
has been set-up, reset, or moved from one altitude to another (i.e. from one floor of a
building to another floor). In areas where the weather is not affected by the change
of air pressure, this feature will be less accurate.
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2.
WEATHER ICONS
There are 3 possible weather icons that will be displayed in the FORECAST LCD:
Sunny—indicates that the weather is expected to improve (not that the weather
will be sunny).
Sun with Clouds—indicates that the weather is expected to be fair (not that the
weather will be sunny with clouds).
Clouds with Rain—indicates that the weather is expected to get worse (not that
the weather will be rainy).
The weather icons change when the unit detects a change in air pressure. The
icons change in order, from “sunny” to “partly sunny” to “cloudy” or the reverse. It
will not change from “sunny” directly to “rainy”, although it is possible for the
change to occur quickly. If the symbols do not change then the weather has not
changed, or the change has been slow and gradual.
IV.
MOUNTING THE REMOTE TEMPERATURE TRANSMITTER
A. The Remote Temperature Transmitter can be mounted in two ways: 1)
with the use of screws, or 2) using the adhesive tape.
B. MOUNTING WITH SCREWS
1. Remove the mounting bracket from the Remote Temperature
Transmitter. The bracket should snap off easily.
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 the mounting surface.
4. Screw mounting bracket onto the mounting surface. Ensure that the
screws are flush with the bracket.
5. Snap the Remote Temperature Transmitter onto the mounted bracket.
C. 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. Remove
the protective strip from the other side of the tape. Position the
Remote Temperature Transmitter in the desired location, ensuring that
the Weather Temperature Station can receive the signal.
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V.
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.
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TROUBLESHOOTING
Problem:
Solution:
The Projection is faint
1) Change intensity setting
2) Use AC adapter
3) Darken surroundings
4) Use fresh batteries (if AC is not used)
Problem:
Solution:
Problem:
Solution:
The LCD is faint.
1) Replace the batteries.
“OFL” appears in the indoor temperature LCD.
1) Move unit to an area with warmer or cooler
surrounding temperature. Current surrounding
temperatures are outside measuring range.
No reception of WWVB signal.
Problem:
Solution:
1)
It may help reception to face the
front of the Projection alarm in the general
direction of Ft. Collins, Colorado.
Wait overnight for signal.
Be sure the Projection alarm is at
least 6 feet from any electrical devices, i.e.
TV sets, computers, or other radio controlled
clocks.
2)
3)
4)
5)
Remove batteries for five minutes,
reinsert and leave the unit alone overnight
without pressing buttons.
If problems persist contact La
Crosse Technology.
Problem:
Solution:
Hour is incorrect (minute and date are correct).
1) Be sure correct time zone and daylight
saving time is selected.
Problem:
Solution:
“--.-” appears in outdoor temperature LCD
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.
Problem:
Solution:
“OFL” appears in the outdoor temperature LCD
1)
2)
3)
Remote temperature is out of range.
Check batteries.
Interference from an outside source
(cordless telephone, etc.)
Contact La Crosse Technology.
4)
Note: For any questions not answered, contact La Crosse Technology with the
contact information found at the end of this instructional manual.
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SPECIFICATIONS FOR WT-5442
Temperature:
Measuring range:
32°F to 122°F with 0.2°F resolution
(indoor)
-21.8°F to 140°F with 0.2°F
resolution (outdoor)
(0°C to 50°C with 0.1°C resolution)
Every 10 seconds indoor, 3 times in
10 minutes for remote temperature.
Checking intervals:
Power source:
AC Adapter (included)
Input: 120VAC/60Hz Output: DC
6V/100MA
Battery type:
Station: 3 x AA, 1.5V (Alkaline)
(optional)
Transmitter: 2 x AA, 1.5V (Alkaline)
Approximately 12 months,
depending on projection and
backlight use
Battery life:
Dimensions (L x W x H):
5.5”W x 4”H x 1.5”L
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WARRANTY INFORMATION
La Crosse Technology provides a 1-year warranty on this product. Contact La Crosse Technology
immediately upon discovery of any defects covered by this warranty.
Before sending the unit in for repairs, contact La Crosse Technology. The unit 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 units’ 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 UNIT. 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
1116 South Oak Street
La Crescent, MN 55947
Phone: 507.895.7095
Fax: 507.895.8000
e-mail
(warranty work)
(information on other products)
Website
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.
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