The Celestron 47001 compact weather station and quartz digital clock reads and displays the indoor and outdoor temperatures in either Fahrenheit or Centigrade, plus has an icon display of current weather conditions. The humidity trend (both indoor and outdoor) is shown, along with an indoor humidity icon showing various faces – happy, sad, or in-between, depending on the readings of very dry to very wet.
Its battery-operated single wireless remote sensor has a 100’ range. A display on the face of the remote temperature sensor shows the temperature and humidity at the remote location. An icon on the weather station itself will illuminate if the batteries in the remote sensor are getting low.
Since the remote sensor both transmits the local temperature and humidity to the indoor station and displays the temperature for an observer at its location, inside a telescope dome would be an ideal location for a second sensor. You can both keep track of conditions inside your dome when it is not in use as well as keep track of the temperature and humidity at the scope while you are observing.
The free-standing or wall-mounted Celestron 47001 has a programmable indoor and outdoor minimum and maximum temperature warning alarm and a min/max memory for indoor and outdoor temperatures. It also has a Moon phase display, a useful reminder for amateur astronomer deep space observers.
The digital quartz clock has a built-in alarm with five minute snooze function. Its attractive large LCD display is easy to read day or night. You can select a 12 or 24 hour time format, with a calendar that shows the year, month, date, and day of the week. The week day can be displayed in English, German, Italian, French, Dutch, Spanish, or Danish.
The 47001 requires two user-supplied AAA type batteries to power the main unit and two user-supplied AAA batteries for the remote sensor.
The indoor operating temperature range is from +32° F to +122° F (0° C to +50° C), while the outdoor range is from -4° F to +158° F (-20° C to +70° C), with an accuracy of +/- 0.5° C. The indoor/outdoor relative humidity range is 20% to 95%, with an accuracy of +/- 1.5%. The compact indoor weather station display unit weighs 5 ounces and measures approximately 5.6" tall by 3.1" wide and 1.8" deep. The outdoor sensor unit weighs 3 ounces and measures approximately 3.8" tall by 2.4" wide and 1.1" deep.