WT-8112U
RADIO-CONTROLLED SOLAR CLOCK
INSTRUCTION MANUAL
Contents
Languages Page
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English |
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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
Indoor temperature display in ºF/ ºC selectable
Indoor humidity display in RH%
Primary Alkaline battery or Solar Rechargeable Alkaline battery selection
Low battery indicator
Wall mount or freestanding
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 (nonrechargeable; not included).
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"
INITIAL SETUP (USING INCLUDED SOLAR RECHARGEABLE BATTERY FROM THE FACTORY)
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.
2.Locate the battery insulator tab and gently pull to remove it.
3.Next, slide the battery switch to the SOLAR position. The clock should activate.
4.Wait for WWVB signal.
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TABLE OF CONTENTS |
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Topic |
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Features |
3 |
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Battery Installation |
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Setting Up |
5 |
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Atomic time - WWVB Radio Controlled Time |
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Function keys |
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LCD Screen |
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Manual Settings |
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Alarm setting and snooze |
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Mounting |
12 |
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Care and maintenance |
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Specifications |
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Warranty |
16 |
FEATURES:
RADIO-CONTROLLED SOLAR CLOCK:
LCD1 |
display |
LCD2 |
display |
Solar |
panel |
Wall Mount
Location
Function keys
Battery cover
Foldable stands
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SWITCH LEFT |
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SWITCH RIGHT |
(START-UP / |
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(SOLAR OPERATION) |
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(SOLAR- |
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RESET) |
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RECHARGEABLE |
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(STANDARD |
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BATTERY) |
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ALKALINES) |
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Slide switch to RIGHT |
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Slide switch to |
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position once solar- |
LEFT position |
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before (1) start-up / |
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rechargeable battery |
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are inserted and |
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reset or (2) any type |
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insulator tab is |
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of battery |
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removed |
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replacement |
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WARNING |
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Do NOT recharge the |
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BATTERY COMPARTMENT |
included solar- |
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rechargeable battery |
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NOTE: This clock requires 1 battery. |
outside of this product |
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There is a “filler battery shell” in the top |
because it will damage the |
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spot. Please leave this filler in place. |
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battery and other charging |
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devices. |
Use a non-rechargeable alkaline battery:
1.Remove the included solar rechargeable AA battery from the compartment.
2.Use the switch to the left to select the alkaline battery.
3.Insert 1 x AA Alkaline battery into the compartment, observing the correct polarity (see marking inside battery compartment.
4.Replace battery cover
5.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 overcharging re-chargeable alkaline battery.
DO NOT SET THE CLOCK.
Please help in the preservation of the environment and return used batteries to an authorized depot.
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SETUP AFTER CHANGING/REPLACING THE BATTERY
1.After powering up the solar clock, all LCD segments will light up briefly and it will show the time (12:00), indoor temperature, date, and indoor humidity.
2.Next the WWVB time code reception will automatically start. This reception typically takes 10 minutes in good conditions. If after 10 minutes the WWVB time has not been received, use the “SET” key to enter the set-up mode to manually set the Time, Time Zone and Date (see manual settings below). The clock will continue to search for WWVB each hour between 12am and 6am. When the clock has successfully connected with WWVB, it will override the manually set time and date.
NOTE: When changing the battery:
1.Be careful that it does not spring free from the contacts.
2.Press any button 20 times with the battery removed.
3.Always wait at least 10 minutes after removing battery before re-inserting; otherwise start up problems may occur.
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.
After 15 minutes the WWVB tower icon in the clock display will start flashing in the top center of the LCD. This indicates 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:
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LCD SCREEN DESCRIPTIONS
The radio-controlled 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 temperature and indoor humidity.
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Radio reception icon |
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WWVB |
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Alarm icon |
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Low battery |
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time |
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icon (clock) |
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Indoor |
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Indoor |
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temperature |
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humidity |
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display |
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Weekday |
Date |
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MANUAL SETTINGS
NOTE: If the radio-controlled 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 “Set-up” the manual setting modes can be entered by pressing the SET key. The following settings can now be programmed:
Time zone setting
DST ON/OFF
Language display setting
Manual time setting
Year setting
Month setting
Date setting
Weekday setting
12/24h time format display
ºF/ºC temperature setting
Solar mode setting
TIME ZONE
The time zone can be set between the +/–12-hour range in LCD2. To do this:
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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 solar 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).
FUNCTION KEYS
The radio-controlled clock has four easy to use keys:
SET key |
: To enter into the set mode for the following |
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functions: time zone, DST ON/OFF (daylight saving |
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time), language, hour, minute, year, month, date, |
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weekday, 12/24h time format display, ºF/ ºC |
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temperature unit, and solar mode |
+ key |
: To change any values in manual set mode |
ALM key |
: To enter into the alarm set mode |
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To activate/deactivate the alarm |
SNZ key |
: To activate the snooze function during alarm |
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To exit manual setting modes |
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1.The time zone (LCD2) will start flashing (Default setting "EST -5“). Select the desired time zone by pressing and releasing the + key.
Time zone settings: -12, -11, -10, ALA, PST, MST, CST, EST, ATL, -3, -2, -1, 0, +1, +2...+12. (Default: EST)
2.Press and release the SET key to enter the “DST Setting“.
DST (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
The weekdays can be displayed in LCD1 with the pre-set languages: English (US), Spanish (E), French (F), and German (d):
1.Set the desired language for the weekday display in LCD1 by use of the + key.
2.Press and release the SET key to enter the mode “Manual Time Setting”.
SET THE TIME MANUALLY
In case the radio-controlled clock is not able to detect the WWVBsignal (disturbances, transmitting distance, etc.); the time can be manually set. The clock will then work as a normal Quartz clock.
NOTE: the time will be displayed with an additional “PM” for the time from 12:00 noon until 11:59.
NOTE: The unit will still try to 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
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