La Crosse Technology Calculator WT 8112U User Manual

WT-8112U  
TABLE OF CONTENTS  
RADIO-CONTROLLED SOLAR CLOCK  
Topic  
Features  
Page  
3
INSTRUCTION MANUAL  
Battery Installation  
Setting Up  
3
5
Atomic time - WWVB Radio Controlled Time  
Function keys  
5
6
Contents  
LCD Screen  
7
7
Languages  
Page  
Manual Settings  
Alarm setting and snooze  
Mounting  
Care and maintenance  
Specifications  
__________________________________________  
11  
12  
14  
15  
16  
English  
2
Warranty  
FEATURES:  
RADIO-CONTROLLED SOLAR CLOCK:  
LCD1  
display  
LCD2  
display  
Solar  
panel  
Wall Mount  
Location  
Function keys  
Battery cover  
Foldable  
stands  
1
2
WWVB Radio controlled time with manual time setting  
Time display: hour, minute, second  
12/24h time format display  
Alarm setting with snooze function  
Calendar display  
Weekday display (4 languages to choose from: English,  
Spanish, French, German)  
Time zone setting  
Daylight savings time ON/OFF option (DST)  
Solar mode setting  
SWITCH RIGHT  
(SOLAR OPERATION)  
(SOLAR-  
RECHARGEABLE  
BATTERY)  
Slide switch to RIGHT  
position once solar-  
rechargeable battery  
are inserted and  
insulator tab is  
removed  
SWITCH LEFT  
(START-UP /  
RESET)  
(STANDARD  
ALKALINES)  
Slide switch to  
LEFT position  
before (1) start-up /  
reset or (2) any type  
of battery  
replacement  
Indoor temperature display in ºF/ ºC selectable  
Indoor humidity display in RH%  
Primary Alkaline battery or Solar Rechargeable Alkaline  
battery selection  
WARNING  
Do NOT recharge the  
included solar-  
rechargeable battery  
outside of this product  
because it will damage the  
battery and other charging  
devices.  
Low battery indicator  
Wall mount or freestanding  
BATTERY COMPARTMENT  
NOTE: This clock requires 1 battery.  
There is a “filler battery shell” in the top  
spot. Please leave this filler in place.  
TO INSTALL / REPLACE BATTERY  
The solar clock can use either the included 1 x alkaline rechargeable  
battery (charged by solar panel) or 1 x AA alkaline battery (non-  
rechargeable; not included).  
Use a non-rechargeable alkaline battery:  
WARNING! "Do Not recharge the included solar rechargeable  
batteries in any device other than the product they came with.  
Recharging the solar rechargeable batteries in battery chargers or  
other third party devices will damage the batteries and charging  
device"  
1.  
Remove the included solar rechargeable AA battery from the  
compartment.  
2.  
3.  
Use the switch to the left to select the alkaline battery.  
Insert 1 x AA Alkaline battery into the compartment, observing  
the correct polarity (see marking inside battery compartment.  
Replace battery cover  
IMPORTANT: If the solar panel is facing a permanent strong  
light source (eg., on top of a refrigerator with halogen lamp),  
please switch the clock to alkaline battery mode to avoid over-  
charging re-chargeable alkaline battery.  
INITIAL SETUP (USING INCLUDED SOLAR RECHARGEABLE  
BATTERY FROM THE FACTORY)  
4.  
5.  
1.  
Open battery compartment on the back of the Clock and make  
sure that the battery switch under the battery compartment is  
positioned to the left.  
If it is not, please slide the switch to the left before proceeding.  
Locate the battery insulator tab and gently pull to remove it.  
Next, slide the battery switch to the SOLAR position. The  
clock should activate.  
DO NOT SET THE CLOCK.  
2.  
3.  
Please help in the preservation of the environment  
and return used batteries to an authorized depot.  
4.  
Wait for WWVB signal.  
3
4
 
unsuccessful, then the WWVB tower icon will not appear but  
reception will still be attempted the following hour.  
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.  
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  
radio-controlled 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.  
2.  
Press and release the SET key to move to “Weekday  
setting”.  
WEEKDAY  
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.  
Press and release the SET key to enter the mode “12/24h  
Time Format Setting”.  
2.  
After following the steps above (Time zone setting, DST ON/OFF,  
Language display setting):  
12/24H TIME FORMAT  
The time format can be display in 12h or 24h (Default setting “12h”).  
1.  
The digits “12” or “24” will start flashing on LCD1. By use of  
the + key select 12h or 24h time format display.  
Press and release the SET key to enter the mode “ºC or ºF  
Temperature Setting”.  
1.  
2.  
The hour digits will start flashing on LCD1.  
Set the desired hours by pressing and releasing the + key  
followed by pressing the SET key.  
2.  
3.  
4.  
Now the minute digits will start flashing.  
Set the desired minutes by pressing and releasing the + key.  
If the + key is held, the units will increase by 5.  
Press and release the SET key to move to the “Year” setting.  
°C OR °F TEMPERATURE  
The temperature setting can be set to either to ºF or ºC (Default  
setting °F).  
5.  
1.  
The characters “°F” or “°C” will start flashing on LCD1. By  
use of the + key select “°F” for temperature display in  
degrees Celsius or “°C” for degrees Fahrenheit.  
Press and release the SET key to enter the mode “Solar  
Mode Setting”.  
YEAR  
The year can be selected sequentially from 2001 to 2029 and will  
then start over again (default setting 2009). The year will only appear  
in the manual setting mode.  
2.  
1.  
The year digits will start flashing (only last 2 digits) on LCD2.  
Select the desired year by use of the + key.  
Press and release the SET key to switch to the “Month  
Setting”.  
SOLAR MODE  
2.  
The Solar Mode is used for saving the power consumption of the  
rechargeable battery (Default setting ON):  
MONTH  
1.  
2.  
The characters “ON” or “OFF” will start flashing on LCD1. By  
use of the + key select “ON” or “OFF” to set the solar mode.  
Press and release the SET key to exit the setting mode and  
switch back to the normal display mode.  
1.  
The month digit on LCD2 will start flashing (Default setting 1).  
Set the desired month by use of the + key.  
Press and release the SET key to move to the mode “Date  
Setting”.  
2.  
If the solar mode setting is ON:  
DATE  
1.  
LCD will automatically turn OFF automatically if the  
environment is too dark  
The digits for the date will start flashing on LCD2 (Default  
setting 1). Set the desired date by use of the + key.  
9
10  
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.  
LCD will automatically turn ON automatically if the  
environment is bright enough; the surrounding  
environment brightness is checked every 5 seconds  
No information will be displayed when the LCD is OFF, but  
all the settings and operations will remain, except for the  
temperature and humidity measurements.  
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.  
If the solar mode setting is OFF:  
LCD will remain ON constantly.  
POSITIONING THE RADIO-CONTROLLED SOLAR CLOCK:  
Before permanently mounting, ensure that the radio-controlled solar  
clock is able to receive WWVB signals from the desired location.  
Also, extreme and sudden changes in temperature will decrease the  
accuracy of the solar 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.  
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 radio-controlled solar clock will automatically switch back  
to normal display mode.  
ALARM  
There are two possible ways to mount the solar clock:  
To enter into the alarm setting mode:  
use of the foldable table stands, or  
wall mounting  
1.  
Hold the ALM key for 4 seconds. The hour digits start  
flashing.  
2.  
3.  
Press and release the + key to set the hour.  
Press and release the ALM key to set the minutes. The  
minute digits start flashing.  
FOLDABLE TABLE STANDS  
The foldable table stands legs are located on the  
4.  
5.  
Press and release the + key to set the minutes.  
Press and release again the ALM key to exit the Alarm setting  
mode or wait for 15 seconds automatic timeout.  
backside. Unfold the stands out, below the  
battery compartment. Once the foldout table  
stands are extended, place the radio-controlled  
solar clock in an appropriate location.  
TO DEACTIVATE THE ALARM:  
Alarm icon ((())) (ON)  
WALL MOUNTING  
1.  
Install a mounting screw (not included) into a  
wall—leaving approximately 3/16 of an inch  
(5mm) extended from the wall.  
2.  
Place the radio-controlled solar clock onto the  
screw, using the hanging hole on the backside.  
Gently pull the radio-controlled clock down to  
lock the screw into place.  
NOTE: Always ensure that the radio-controlled  
clock locks onto the screw before releasing.  
11  
12  
 
TROUBLESHOOTING:  
Solution:  
Remove the battery, slide the battery switch  
to BATTERY and reinsert the the  
battery.  
If you are using a rechargeable battery, you  
can then slide the battery switch to  
SOLAR.  
Problem:  
Solution:  
The LCD is OFF.  
1) Move the solar clock to a brighter  
environment.  
2) Check that the solar panel is not  
covered.  
3) Replace the battery if using alkaline  
battery.  
4) Enter program menu and turn Solar  
Mode OFF (this is a power saving  
feature).  
No reception of WWVB signal  
1) It may help reception to face the front of  
the radio-controlled clock in the general  
direction of Ft. Collins, Colorado.  
2) Wait overnight for signal.  
3) Be sure the radio-controlled clock is at  
least 6 feet (2 meters) from any electrical  
devices, i.e. TV sets, computers, or other  
radio controlled clocks.  
CARE AND MAINTENANCE:  
Avoid placing the unit in areas prone to vibration and shock as  
these may cause damage.  
Avoid areas where the unit 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  
reduce the accuracy of readings.  
Problem:  
Solution:  
When cleaning the LCD and casing, use a soft damp cloth  
only. Do not use solvents or scouring agents.  
Do not submerge the unit into water.  
Immediately remove all low powered batteries to avoid  
leakage and damage. Replace only with new battery of the  
recommended size.  
Do not make any repairs to the unit. Please return it to the  
original point of purchase. Opening and tampering with the  
unit may invalidate the warranty.  
4) Remove batteries for five minutes,  
reinsert and leave the unit alone overnight  
without pressing any keys.  
Problem:  
Solution:  
Problem:  
Solution:  
Hour is incorrect (minute and date are  
correct).  
1) Be sure the correct time zone and daylight  
saving time is selected.  
"OFL“ appears in the indoor temperature  
section of the LCD  
1) Move the radio-controlled clock to an  
area with warmer or cooler surrounding  
temperature. Current surrounding  
temperatures are outside measuring  
range. Batteries.  
SPECIFICATIONS:  
Temperature measuring range  
Indoor:  
14.1F to 139.8F with 0.2F resolution (-9.9C to  
+59.9C with 0.1C resolution; “OFL” displayed if  
outside this range)  
Temperature checking interval  
Indoor: every 60 seconds  
Humidity measuring range  
Indoor : 20% to 95% with 1% resolution  
Problem:  
Solution:  
"00" appears in the in humidity section of  
the LCD.  
(“—“ displayed if temperature is OFL; “19%” displayed  
if below 20%, “96%” displayed if above 95%)  
1) Remove the battery from the unit for ten  
minutes, Press any button 20 times with  
battery out then reinsert it again.  
The clock appears to be locked up or  
displays partial segments.  
Temperature checking interval  
Indoor: every 60 seconds  
Problem:  
13  
14  
Power consumption  
Alkaline rechargeable Battery:  
1 x AA, 1.5V (included), rechargeable by solar cell  
Rechargeable Alkaline battery life:  
18 – 60 months, depending on usage  
Primary Alkaline battery:  
La Crosse Technology, Ltd will repair or replace this product, at our  
option and at no charge as stipulated herein, with new or  
reconditioned parts or products if found to be defective during the  
limited warranty period specified above. All replaced parts and  
products become the property of La Crosse Technology, Ltd and  
must be returned to La Crosse Technology, Ltd.  
1 x AA, 1.5V battery (not included)  
Primary Alkaline battery life: about 24 months  
Replacement parts and products assume the remaining original  
warranty, or ninety (90) days, whichever is longer. La Crosse  
Technology, Ltd will pay all expenses for labor and materials for all  
repairs covered by this warranty. If necessary repairs are not  
covered by this warranty, or if a product is examined which is not in  
need or repair, you will be charged for the repairs or examination.  
Dimensions (L x W x H)  
Solar clock: 9.18" x 1.12" x 8.52"  
Low battery indicator:  
RX - Low battery indicator is displayed on the LCD when the battery  
voltage is low.  
The owner must pay any shipping charges incurred in getting your  
La Crosse Technology, Ltd product to a La Crosse Technology, Ltd  
authorized service center.  
WARNING! "Do Not recharge the included solar rechargeable  
batteries in any device other than the product they came with.  
Recharging the alkaline rechargeable batteries in battery chargers or  
other third party devices will damage the batteries and charging  
device"  
Your La Crosse Technology, Ltd warranty covers all defects in  
material and workmanship with the following specified exceptions:  
(1) damage caused by accident, unreasonable use or neglect  
(including the lack of reasonable and necessary maintenance); (2)  
damage occurring during shipment (claims must be presented to the  
carrier); (3) damage to, or deterioration of, any accessory or  
decorative surface; (4) damage resulting from failure to follow  
instructions contained in your owner’s manual; (5) damage resulting  
from the performance of repairs or alterations by someone other than  
an authorized La Crosse Technology, Ltd authorized service center;  
(6) units used for other than home use (7) applications and uses that  
this product was not intended or (8) the products inability to receive a  
signal due to any source of interference.  
IMPORTANT: If the solar panel is facing a permanent strong light  
source (eg., on top of a refrigerator with halogen lamp), please  
switch the clock to alkaline battery mode to avoid over-charging re-  
chargeable alkaline battery.  
WARRANTY INFORMATION  
La Crosse Technology, Ltd provides a 1-year limited warranty on this  
product against manufacturing defects in materials and  
workmanship.  
This warranty covers only actual defects within the product itself, and  
does not cover the cost of installation or removal from a fixed  
installation, normal set-up or adjustments, claims based on  
misrepresentation by the seller or performance variations resulting  
from installation-related circumstances.  
This limited warranty begins on the original date of purchase, is valid  
only on products purchased and used in North America and only to  
the original purchaser of this product. To receive warranty service,  
the purchaser must contact La Crosse Technology, Ltd for problem  
determination and service procedures. Warranty service can only be  
performed by a La Crosse Technology, Ltd authorized service  
center. The original dated bill of sale must be presented upon  
request as proof of purchase to La Crosse Technology, Ltd or La  
Crosse Technology, Ltd’s authorized service center.  
15  
16  
 
LA CROSSE TECHNOLOGY, LTD WILL NOT ASSUME LIABILITY  
FOR INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR OTHER  
SIMILAR DAMAGES ASSOCIATED WITH THE OPERATION OR  
MALFUNCTION OF THIS PRODUCT. THIS PRODUCT IS NOT TO  
BE USED FOR MEDICAL PURPOSES OR FOR PUBLIC  
INFORMATION. THIS PRODUCT IS NOT A TOY. KEEP OUT OF  
CHILDREN’S REACH.  
This warranty gives you specific legal rights. You may also have  
other rights specific to your State. Some States do no 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  
2817 Losey Blvd. S.  
La Crosse, WI 54601  
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.  
17  
 

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