La Crosse Technology WT 2150A User Manual

Features:  
Radio Controlled Alarm Clock  
WWVB radio controlled time and date  
12 or 24 hour time display  
Indoor temperature reading (°F/°C user selectable)  
Two independent alarm times  
Snooze interval setting from 0 (off) to 59 minutes  
Calendar display (weekday/month/date or month/date/year)  
Time zone map for continental United States  
Time zone selectable –1 hour to –12 hour or Greenwich Mean Time (GMT)  
LCD back light  
Manual time setting option  
Daylight savings time ON/OFF option  
Low battery indicator  
Introduction:  
Congratulations on purchasing this Radio Controlled Alarm Clock. Welcome to  
the world of radio controlled time-keeping technology. We hope you will enjoy  
the convenience of never having to set your clock again and having the  
confidence of knowing exactly what time it is. This innovative clock is ideal for  
home or office use and is loaded with many features. Please read this  
instruction manual to enjoy the full benefits of all the features.  
Your Radio Controlled Alarm Clock has five easy to use  
function keys:  
Use of keys:  
SET:  
Enter the programming mode.  
Select and confirm settings while in programming mode.  
Toggle between displaying seconds, calendar, alarm times  
or temperature.  
SNOOZE Bar  
MODE/+:  
Change or select value while in programming mode.  
ꢀꢁ ꢂ ꢄ ꢅ ꢈꢉꢂ  
ALM1/HOUR: Enter the alarm setting mode for alarm 1.  
Set Alarm 1 on/off  
Set hour while in alarm set mode  
Enter the alarm setting mode for alarm 2  
Set Alarm 2 on/off  
Set minute while in alarm set mode  
While alarm is sounding, turns off alarm for set time (or off if  
set to 0)  
ALM2/MIN:  
SNOOZE:  
ALM1/Hour key  
Turns on back light for LCD (automatic turnoff)  
SET key  
ALM2/Minute key  
MODE/+ key  
5) Manual time setting: This is not necessary unless the alarm clock did not  
pick up a signal upon start up and it is not favorable to wait overnight for  
time set. If the time is manually set, be sure to set the time to the correct  
AM/PM time.  
Programming Mode  
1) Press the SET key to enter programming mode.  
2) Time Zone: Press the MODE/+ key to change the time zone.  
a) Press the MODE/+ key to set the hour. Press the SET key.  
b) Press the MODE/+ key to set the minute. Press the SET key.  
c) Press the MODE/+ key to set the year. Press the SET key.  
d) Press the MODE/+ key to set the month. Press the SET key.  
e) Press the MODE/+ key to set the day. Press the SET key.  
f) Press the MODE/+ key to set the weekday. Press the SET key.  
g) Press the MODE/+ key to set 12- or 24-hour mode. Press the SET key.  
a)  
b)  
c)  
Default upon starting is Eastern (-5 GMT)  
Can be set to –1 to –12 hour and GMT  
The US map will highlight the time zones set within continental  
United  
States (Eastern (-5), Central (-6), Mountain (-7), Pacific (-8)) or  
“GMT” will be displayed if set to GMT (0).  
Press the SET key  
d)  
e)  
6) Temperature Selection: Press the MODE/+ key to select °F (Fahrenheit)  
or °C (Celsius). Press the SET key. The programming mode is complete.  
3) DST: Press the MODE/+ key to switch Daylight Savings Time off or on. The  
WWVB automatically corrects for DST; “DST” is to be set to “OFF” only in  
areas that do not follow DST. Press the SET key.  
4) Snooze: Press the MODE/+ key to select the desired snooze length from 0  
to 59 minutes. Default is 10 minutes; 0 is no snooze (pressing the  
SNOOZE bar turns off the alarm). Press the SET key.  
Alarm Setting Mode  
1) Press the ALM1 or ALM2 key for two seconds to enter the Alarm 1 or Alarm  
2 setting mode.  
2) Press the ALM1/HOUR key to set the alarm hour.  
3) Press the ALM2/MIN key to set the alarm minute.  
4) Exit this mode by pressing the SNOOZE bar or waiting for 15 seconds.  
Ionosphere, reception is very limited during daylight hours. Your alarm 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. Your Radio Controlled Alarm Clock cannot receive signals from  
other transmitters in the world (Germany’s DCF 77, Japan’s JG2AS, or  
England’s MSF-60). Outside the United Sates, the alarm clock will keep time  
as a precision quartz clock.  
Alarm is activated when ((1)) or ((2)) is displayed to the right of the map. To  
activate/deactivate an alarm, press the ALM1 or ALM2 key briefly.  
Display Modes  
Your alarm clock can be set to display (underneath the US map) either the  
seconds, calendar, alarm 1 time, alarm 2 time or indoor temperature.  
1) Press the MODE/+ key to change the display function.  
2) The display will toggle through the options.  
Troubleshooting  
The Radio Controlled Alarm Clock is designed to be simple to operate yet  
offer a complete range of features. Some common questions are listed below.  
Q: I inserted a battery, but the time did not set; what’s wrong?  
A: In many areas of the country a signal cannot be received during daylight  
hours due to the interference of the sun. By leaving the clock alone, a  
signal will be found during the night and the alarm clock will be set to the  
General Information on 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 your alarm clock. However, due to the nature of the Earth’s  
absolutely correct time and date by the next morning. When a signal is  
received, the radio tower icon is displayed to the left of the US map. If no  
signal is received, there will be no tower icon.  
Q: After the clock set itself, why does it show the wrong hour?  
A: The time zone is not set correctly. Look on the LCD map to see if the  
proper time zone is highlighted. If not, follow the “Programming Mode”  
section.  
Q: Why hasn’t my alarm clock picked up a signal?  
A: Short-term interference can be caused by storms between you and  
Colorado during reception time. There is interference between the Alarm  
Clock and the signal from Colorado. Be sure to keep the alarm clock at  
least six feet from any electrical device (computers, television sets, other  
radio-controlled clocks, etc.). Avoid placing alarm clock on metal surfaces.  
The ideal location for signal reception is in a window facing Colorado.  
Q: What does “DST ON/OFF” mean?  
A: Some parts of the country do not follow Daylight Savings Time (Arizona  
and parts of Indiana). Since the WWVB signal includes the correction for  
this, these areas must have the DST OFF.  
Care and Maintenance  
Q: Can I set the time and date without waiting for a signal?  
A: Yes; simply follow the “Programming Mode” directions.  
Extreme temperatures, vibration and shock should be avoided as these  
may cause damage to the unit and could give inaccurate readings.  
Use a soft, dry cloth to clean alarm clock. Do not use solvents as they may  
mark the LCD and case.  
Do not expose alarm to water or high humidity.  
Immediately remove low powered battery to avoid leakage and replace with  
one fresh AA LR6 battery.  
Q: How often does the alarm clock synchronize with the WWVB?  
A: The Alarm Clock searches for a signal immediately after inserting a  
battery. After an initial signal is received, the alarm searches for a signal  
starting at 12:00 AM (midnight) every night and synchronizes at that time.  
Do not attempt to repair your alarm clock.  
Battery Change  
Specifications:  
Time Source/Frequency  
Temperature measuring range  
:
:
WWVB/60 kHz  
It is recommended to replace the battery on an annual basis to ensure  
optimum accuracy or when the battery icon indicates low running power.  
When replacing the battery, be sure to leave battery out for at least one  
minute to allow complete reset.  
-21.8°F to +155.9°F  
(-29.9°C to +68.8°C)  
0.2°F (0.1°C)  
Temperature resolution  
Temperature checking interval  
Power source  
Battery life cycle  
Dimensions (L x W x H)  
:
:
:
:
:
Every 10 seconds  
Place battery firmly in compartment to ensure proper contact.  
1 x AA, IEC LR6, 1.5V Alkaline  
Approximately 12 months  
3.70 x 3.50 x 1.91 in  
(95 x 90 x 49 mm)  
For warranty work, technical support, or information, contact La Crosse Technology at:  
Radio controlled Alarm Clock  
Horloge radio-commandée  
Despertador Controlado por emisiones de Radio  
La Crosse Technology, Ltd  
2809 Losey Blvd. S.  
La Crosse, WI 54601  
Phone: 608.782.1610  
Fax: 608.796.1020  
Instructions Manual  
Manual de instrucciones  
Livret d'instructions  
e-mail:  
(warranty work)  
Canada  
(information on other products)  
Mountain Time  
(-7h GMT)  
Central Time  
Pacific Time  
(-6h GMT)  
web:  
(-8h GMT)  
Eastern Time  
(-5h GMT)  
United States  
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.  
OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:  
Mexico  
1.  
2.  
THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND  
THIS DEVICE MUST ACCEPT INTERFERENCE RECEIVED, INCLUDING  
INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.  

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