AcuRite 00384RM Weather Station with Indoor/Outdoor Temperature, Humidity, Intelli-Time Clock and Moon Phase Monitor indoor and outdoor temperature (Fahrenheit and Celsius) and humidity Daily high and low records for temperature and humidity Illuminated color display with auto-dimming brightness; electric-powered with optional battery backup Wireless all-weather outdoor sensor measures environmental conditions with precision and accuracy (330-foot, 100-meter range) Intelli-Time clock automatically adjusts for daylight saving time