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SkyScan 87800 Instruction Manual

With outdoor wireless temperature and moon phase
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®

ATOMIC CLOCK

WITH OUTDOOR WIRELESS TEMPERATURE
AND MOON PHASE
MODEL 87800-87801

Instruction Manual

FEATURES:

 WWVB Radio controlled time with manual time setting
 12/24 hour time display
 Time display: hour, minute, second
 Alarm setting with snooze function
 Calendar display
 Weekday display (4 languages to choose from: English, French, Spanish and German)
 Time zone setting
 Daylight savings time ON/OFF option (DST)
 ºC or ºF temperature display selectable
 Indoor temperature display
 Outdoor temperature display via 433MHz transmission
 Wall mount or freestanding
 Current moon phase display
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Jud Morhart
January 25, 2025

Where can I purchase a remote temperature sensor transmitter for a Skyscan 87801 atomic clock?

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Summary of Contents for SkyScan 87800

  • Page 1: Atomic Clock

    ® ATOMIC CLOCK WITH OUTDOOR WIRELESS TEMPERATURE AND MOON PHASE MODEL 87800-87801 Instruction Manual FEATURES:  WWVB Radio controlled time with manual time setting  12/24 hour time display  Time display: hour, minute, second  Alarm setting with snooze function ...

  • Page 2: Setting Up

    OUTDOOR TEMPERATURE TRANSMITTER:  Remote transmission of outdoor temperature to the atomic clock by 433 MHz signals  Wall mounting case Holder TO INSTALL AND REPLACE BATTERIES IN THE ATOMIC CLOCK The atomic clock uses 2 x AA, 1.5V batteries. To install and replace the batteries, please follow the steps below: 1.

  • Page 3: Function Keys

    5. After the clock receives the outdoor temperature the WWVB time code reception will automatically start. The clock will automatically set itself to the exact time, day and date after receipt of the WWVB time code reception. This typically takes over night. For best reception place your clock next to a window facing Colorado over night.
  • Page 4 MOON PHASE SYMBOLS: The atomic clock automatically calculates and updates the moon phase diagram on LCD2. The phase display will change approximately every 2 days, 11 hours. Whenever the date or time is changed manually, the atomic clock will display the updated moon phase within a few minutes. Twelve stages of the moon’s phases are represented.
  • Page 5 TIME ZONE SETTING After entering the manual setting mode as described above, the time zone can be set using the number of hours different from Greenwich Mean Time (GMT) range in LCD2. To do this: 1. The time zone (LCD2) will start flashing (Default setting "-5h“). Select the desired time zone by pressing and releasing the + key.
  • Page 6 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.
  • Page 7 12/24 HOURS TIME DISPLAY SETTING 1. The “12” or “24” will start flashing in LCD1 (Default setting 12h). Select the desired time display mode by use of the + key. 2. Press and release the SET key to enter the “ºC/ºF Temperature Setting“. °C OR °F TEMPERATURE SETTING 1.
  • Page 8 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.
  • Page 9 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.
  • Page 10 POSITIONING THE ATOMIC CLOCK: There are two possible ways to mount the atomic clock:  use of the foldout table stand, or  wall mounting FOLDOUT TABLE STAND The foldout table stand leg is located on the backside. Pull the stand out from the bottom center edge of the atomic clock, below the battery compartment.
  • Page 11 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.
  • Page 12 "--.-" appears in the outdoor temperature Problem: 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.
  • Page 13 SPECIFICATIONS: Temperature measuring range Indoor: +32ºF to +122ºF with 0.2ºF resolution 0ºC to +50ºC with 0.1ºC resolution ("OF.L" displayed if outside this range) Outdoor : -21.8ºF to +157.8ºF with 0.2ºF resolution -29.9ºC to +69.9ºC with 0.1ºC resolution ("OF.L“ displayed if outside this range) Temperature checking interval Indoor: every 10 seconds Outdoor: every 5 minutes...

This manual is also suitable for:

87801

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