MODEL 87800 - 87801

Instruction Manual

New Moon    Small Waxing    Large Waxing   First Quarter    Small Waxing      Large Waxing

Crescent            Crescent                                    Gibbous               Gibbous                         

FullMoon      Large Waning    Small Waning    Last Quarter    Large Waning         Small Waning          

                                  Gibbous         Gibbous                                     Crescent                  Crescent
Note: The moon phase visible in the sky is noted by a darkening of the LCD screen. Therfore, a full moon is a complete dark circle.

MANUAL SETTINGS

Time zone setting

Manual Time Setting

In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting distance, etc.), the time can be manually set. The clock will then work as a normal Quartz clock.
Note:  In 12 hours mode the time will be displayed with an additional “PM” for the time from 12:00 noon until 11:59 pm.
1.        The hour digits will start flashing on LCD1.
2.        Set the desired hours by pressing and releasing the + key followed by pressing the SET key.
3.        Now the minute digits will start flashing.
4.        Set the desired minutes by pressing and releasing the + key. If the + key is held, the units will increase by 5.
5.        Press and release the SET key to move to the “Year Setting”.
Note:
The unit will still try and 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 unsuccessful, then the WWVB tower icon will not appear but reception will still be attempted the following hour.
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 atomic 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.

Year Setting

The year can be selected sequentially from 2000 to 2049 and will then start over again (default setting 2000). Only the last 2 digits of the year will be visible on LCD2.
1.        The year digits will start flashing on LCD2. Select the desired year by use of the + key.
2.        Press and release the SET key to switch to the “Month Setting”.
Month Setting
1.     The month digits on LCD2 will start flashing. Set the desired month by use of the + key.
2.     Press and release the SET key to move to the mode “Date Setting”.

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 atomic clock will automatically switch back to normal display mode.
Alarm setting
To enter into the alarm setting mode:
1.        Hold the ALM key for 4 seconds. The hour digits start flashing.
2.        Press and release the + key to set the hour.
3.        Press and release the ALM key to set the minutes. The minute digits start flashing.
4.        Press and release the + key to set the minutes.
5.        Press and release again the ALM key to exit the Alarm setting mode or wait for 15 seconds automatic timeout.
To deactivate the alarm:

Alarm icon (((·))) (ON)

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.

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
OUTDOOR Temperature Transmitter:
The temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.
The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.
433MHz Reception Check FOR OUTDOOR TEMPERATURE TRANSMITTER
The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:
1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.
2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.
3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.
4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.
Note:       
When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see Setting up above) otherwise transmission problems may occur.
The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see Setting up). See our website www.skyscaninfo.com for more information.
CHANGING THE DISPLAY MODE (DAY, SECONDS, AND TEMPERATURES)
There are four possible display modes to view the day, seconds, and temperatures.
The month&date/weekday/indoor temperature/outdoor temperature is the default.
To change the display:
1.        Press the + key. The display should now show the month&date/weekday/seconds/outdoor temperature.
2.        Press the + key a second time and the display will now show the month&date/weekday/indoor temperature/seconds.
3.        Press the + key third time and the display will now show the month&date/seconds/indoor temperature/outdoor temperature
4.        Press the + key a fourth time and the display will return to the default display.

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.
Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:
·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.
·          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 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) .

Unsuccessful reception of WWVB signal. Will work as normal quartz clock. Will search for the WWVB time signal overnight.

Icon description:

Successful reception of WWVB time signal

Currently searching for the WWVB time signal (tower blinking)

POSITIONING

TROUBLESHOOTING:

Problem:	The LCD is faint.
Solution:	1)   Replace the batteries.
Problem:	No reception of WWVB signal
Solution:	1)     It may help reception to face the front or back of the atomic clock in the general direction of Ft. Collins, Colorado. 2)     Wait overnight for signal. 3)     Be sure the  atomic clock is at least 6 feet (2 meters) from any electrical devices, i.e. TV sets, computers, or other radio controlled clocks. 4)     Remove batteries for ten minutes. See setting up.
Problem:	Hour is incorrect (minute and date are correct).
Solution:	1)    Be sure the correct time zone and daylight saving time are selected.
Problem:	"OF.L“ appears in the indoor temperature section of the LCD
Solution:	1)     Move the atomic clock to an area with warmer or cooler surrounding temperature. Current surrounding temperatures are outside measuring range.
Problem:	"--.-" appears in the outdoor  temperature section of the LCD.
Solution:	1)     Remove the batteries of both units for  ten minutes, then reinsert them again. Make sure the batteries are new and fresh. See setting up. 2)     Move the atomic clock closer to the transmitter or place the transmitter closer to the atomic clock. Make sure the clock is at a receivable range from the transmitter. 3)     Move the units to another location. Interferences from other electrical devices operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.
Problem:	"OF.L“ appears in the outdoor temperature section of the LCD.
Solution:	1)     Wait until the current surrounding temperature cools down or increases. Current temperature is outside of the measuring range of the transmitter or has temporary affected battery strength. The outdoor temperature will be displayed again once the current surrounding temperature is within the range of the transmitter.

Model 87700                                                                        Printed in China 2004

The alarm will be automatically ON when the alarm time is set. To deactivate  the alarm (OFF), press and release once the key in normal mode display. The alarm icon will disappear, the alarm is now off.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 clockThe temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.        When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see above) otherwise transmission problems may occur.The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see ). See our website for more information.There are four possible display modes to view the day, seconds, and temperatures. The To change the display:1.        Press the + key. The display should now show the 2.        Press the + key a second time and the display will now show the 3.        Press the + key third time and the display will now show the 4.        Press the + key a fourth time and the display will return to the default display.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.Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.·          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.In case the 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 ) .The alarm will be automatically ON when the alarm time is set. To deactivate  the alarm (OFF), press and release once the key in normal mode display. The alarm icon will disappear, the alarm is now off.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 clockThe temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.        When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see above) otherwise transmission problems may occur.The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see ). See our website for more information.There are four possible display modes to view the day, seconds, and temperatures. The To change the display:1.        Press the + key. The display should now show the 2.        Press the + key a second time and the display will now show the 3.        Press the + key third time and the display will now show the 4.        Press the + key a fourth time and the display will return to the default display.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.Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.·          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.In case the 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 ) .The alarm will be automatically ON when the alarm time is set. To deactivate  the alarm (OFF), press and release once the key in normal mode display. The alarm icon will disappear, the alarm is now off.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 clockThe temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.        When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see above) otherwise transmission problems may occur.The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see ). See our website for more information.There are four possible display modes to view the day, seconds, and temperatures. The To change the display:1.        Press the + key. The display should now show the 2.        Press the + key a second time and the display will now show the 3.        Press the + key third time and the display will now show the 4.        Press the + key a fourth time and the display will return to the default display.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.Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.·          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.In case the 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 ) .

·    Avoid placing the units in areas prone to vibration and shock as these may cause damage.·    Avoid areas where the units 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 reduces the accuracy of readings.·    When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring agents.·    Do not submerge the units into water.·    Immediately remove all low powered batteries to avoid leakage and damage. Replace only with new batteries of the recommended size.·    Do not make any repairs to the units. Please return it to the original point of purchase. Opening and tampering with the units may invalidate the warranty.Temperature measuring range           Indoor:  +32ºF to +122ºF with 0.2ºF resolution              0ºC to +50ºC with 0.1ºC resolutionOutdoor:  -21.8ºF to +157.8ºF with 0.2ºF resolutionTemperature checking interval          Indoor:  every 10 secondsOutdoor:  every 5 minutes Transmission distance:  maximum 200 feet in open field, depending upon surrounding  structures, mounting location and possible interfering sources (see for additional information).Power source (Alkaline batteries recommended)                              Atomic clock :  2 x AA, 1.5V  batteriesTransmitter:  2 x AA, 1.5V batteriesBattery life:  about 12 months·          The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any consequences that occur should an inaccurate reading take place.·          This product is only designed for use in the home or office.·          This product is not to be used for medical purposes or for public information.·          The specifications of this product may change without prior notice.·          This product is not a toy. Keep out of the reach of children.·          ·    Avoid placing the units in areas prone to vibration and shock as these may cause damage.·    Avoid areas where the units 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 reduces the accuracy of readings.·    When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring agents.·    Do not submerge the units into water.·    Immediately remove all low powered batteries to avoid leakage and damage. Replace only with new batteries of the recommended size.·    Do not make any repairs to the units. Please return it to the original point of purchase. Opening and tampering with the units may invalidate the warranty.Temperature measuring range           Indoor:  +32ºF to +122ºF with 0.2ºF resolution              0ºC to +50ºC with 0.1ºC resolutionOutdoor:  -21.8ºF to +157.8ºF with 0.2ºF resolutionTemperature checking interval          Indoor:  every 10 secondsOutdoor:  every 5 minutes Transmission distance:  maximum 200 feet in open field, depending upon surrounding  structures, mounting location and possible interfering sources (see for additional information).Power source (Alkaline batteries recommended)                              Atomic clock :  2 x AA, 1.5V  batteriesTransmitter:  2 x AA, 1.5V batteriesBattery life:  about 12 months·          The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any consequences that occur should an inaccurate reading take place.·          This product is only designed for use in the home or office.·          This product is not to be used for medical purposes or for public information.·          The specifications of this product may change without prior notice.·          This product is not a toy. Keep out of the reach of children.·                                  ·    Avoid placing the units in areas prone to vibration and shock as these may cause damage.·    Avoid areas where the units 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 reduces the accuracy of readings.·    When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring agents.·    Do not submerge the units into water.·    Immediately remove all low powered batteries to avoid leakage and damage. Replace only with new batteries of the recommended size.·    Do not make any repairs to the units. Please return it to the original point of purchase. Opening and tampering with the units may invalidate the warranty.Temperature measuring range           Indoor:  +32ºF to +122ºF with 0.2ºF resolution              0ºC to +50ºC with 0.1ºC resolutionOutdoor:  -21.8ºF to +157.8ºF with 0.2ºF resolutionTemperature checking interval          Indoor:  every 10 secondsOutdoor:  every 5 minutes Transmission distance:  maximum 200 feet in open field, depending upon surrounding  structures, mounting location and possible interfering sources (see for additional information).Power source (Alkaline batteries recommended)                              Atomic clock :  2 x AA, 1.5V  batteriesTransmitter:  2 x AA, 1.5V batteriesBattery life:  about 12 months·          The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any consequences that occur should an inaccurate reading take place.·          This product is only designed for use in the home or office.·          This product is not to be used for medical purposes or for public information.·          The specifications of this product may change without prior notice.·          This product is not a toy. Keep out of the reach of children.·                                                                  ·    Avoid placing the units in areas prone to vibration and shock as these may cause damage.·    Avoid areas where the units 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 reduces the accuracy of readings.·    When cleaning the LCD and casing, use a soft damp cloth only. Do not use solvents or scouring agents.·    Do not submerge the units into water.·    Immediately remove all low powered batteries to avoid leakage and damage. Replace only with new batteries of the recommended size.·    Do not make any repairs to the units. Please return it to the original point of purchase. Opening and tampering with the units may invalidate the warranty.Temperature measuring range           Indoor:  +32ºF to +122ºF with 0.2ºF resolution              0ºC to +50ºC with 0.1ºC resolutionOutdoor:  -21.8ºF to +157.8ºF with 0.2ºF resolutionTemperature checking interval          Indoor:  every 10 secondsOutdoor:  every 5 minutes Transmission distance:  maximum 200 feet in open field, depending upon surrounding  structures, mounting location and possible interfering sources (see for additional information).Power source (Alkaline batteries recommended)                              Atomic clock :  2 x AA, 1.5V  batteriesTransmitter:  2 x AA, 1.5V batteriesBattery life:  about 12 months·          The manufacturer and supplier cannot accept any responsibility for any incorrect readings and any consequences that occur should an inaccurate reading take place.·          This product is only designed for use in the home or office.·          This product is not to be used for medical purposes or for public information.·          The specifications of this product may change without prior notice.·          This product is not a toy. Keep out of the reach of children.·         

The alarm will be automatically ON when the alarm time is set. To deactivate  the alarm (OFF), press and release once the key in normal mode display. The alarm icon will disappear, the alarm is now off.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 clockThe temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.        When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see above) otherwise transmission problems may occur.The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see ). See our website for more information.There are four possible display modes to view the day, seconds, and temperatures. The To change the display:1.        Press the + key. The display should now show the 2.        Press the + key a second time and the display will now show the 3.        Press the + key third time and the display will now show the 4.        Press the + key a fourth time and the display will return to the default display.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.Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.·          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.In case the 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 ) .The alarm will be automatically ON when the alarm time is set. To deactivate  the alarm (OFF), press and release once the key in normal mode display. The alarm icon will disappear, the alarm is now off.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 clockThe temperature is measured and transmitted to the atomic clock every 1 minute. The atomic clock will update the temperature display every 5 minutes.The range of the outdoor temperature transmitter may be affected by the temperature. At cold temperatures the transmitting distance may be decreased. Please bear this in mind when positioning the transmitter. Also the batteries may be reduced in power during periods of extreme cold temperatures.The atomic clock will receive the temperature data within 10 minutes. If the temperature data is not  received 10 minutes after setting up (the display shows “- - -”), then please check the following points:1.     The distance of the atomic clock or outdoor temperature transmitter should be at least 6 feet away from any interfering sources such as computer monitors or TV sets.2.     Avoid placing the receiver onto or in the immediate proximity of metal window frames.3.     Using other electrical products such as headphones or speakers operating on the same signal frequency (433MHz) may prevent correct signal transmission and reception.4.     Neighbors using electrical devices operating on the 433MHz signal frequency can also cause interference.        When the 433 MHz signal is received correctly, do not re-open the battery cover of either the outdoor temperature transmitter or atomic clock, as the batteries may spring free from the contacts and force a false reset. Should this happen accidentally then reset all units (see above) otherwise transmission problems may occur.The maximum transmission range is 200 feet from the outdoor temperature transmitter to the atomic clock (in open space). However, this depends on the surrounding environment and interference levels. If no reception is possible despite the observation of these factors, all system units have to be reset (see ). See our website for more information.There are four possible display modes to view the day, seconds, and temperatures. The To change the display:1.        Press the + key. The display should now show the 2.        Press the + key a second time and the display will now show the 3.        Press the + key third time and the display will now show the 4.        Press the + key a fourth time and the display will return to the default display.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.Once the outdoor temperature is displayed on the atomic clock, the WWVB tower icon in the clock display will start flashing in the  top center of the LCD. This indicates that 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:·          Recommended distance to any interfering sources like computer monitors or TV sets is a minimum of 6 feet.·          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.In case the 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 ) .

1.     The digits for the date will start flashing on LCD2 (Default setting 1). Set the desired date by use of the key.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.Press and release the SET key to enter the.

In case the atomic clock is not able to detect the WWVB-signal (disturbances, transmitting distance, etc.), the time can be manually set. The clock will then work as a normal Quartz clock.:  In 12 hours mode the time will be displayed with an additional PM for the time from 12:00 noon until 11:59 pm.1.        The hour digits will start flashing on LCD1.2.        Set the desired hours by pressing and releasing the key followed by pressing the key.3.        Now the minute digits will start flashing.4.        Set the desired minutes by pressing and releasing the key. If the key is held, the units will increase by 5.5.        Press and release the key to move to the .The unit will still try and 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 unsuccessful, then the WWVB tower icon will not appear but reception will still be attempted the following hour.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 atomic 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.The year can be selected sequentially from 2000 to 2049 and will then start over again (default setting 2000). Only the last 2 digits of the year will be visible on LCD2.1.        The year digits will start flashing on LCD2. Select the desired year by use of the key.2.        Press and release the key to switch to the .1.The month digits on LCD2 will start flashing. Set the desired month by use of the key.2.     Press and release the key to move to the mode .1.     The digits for the date will start flashing on LCD2 (Default setting 1). Set the desired date by use of the key.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.Press and release the SET key to enter the.

.After completion of the above described procedures in “ the manual setting modes can be entered by pressing and holding the key for 3 seconds. 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·          12/24 hour time display setting·          ºC or ºF setting

The moon phase visible in the sky is noted by a darkening of the LCD screen. Therfore, a full moon is a complete dark circle..After completion of the above described procedures in “ the manual setting modes can be entered by pressing and holding the key for 3 seconds. 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·          12/24 hour time display setting·          ºC or ºF setting