Plan the day with confidence with your weather prediction information – pinpoint accuracy right from your backyard. The AcuRite Pro Weather Center uses patented Self-Calibrating Technology to provide your forecast of 12 to 24-hour weather conditions. Self-Calibrating Forecasting is generated from weather data measured by a sensor in your yard- giving you the most accurate forecast available for your exact location. The weather station's illuminated color display features indoor/outdoor temperature and humidity, wind speed, wind chill, dew point, heat index, barometric pressure, moon phase, Intelli-Time clock, and calendar. Wind information includes current wind speed, average wind speed and peak wind speed readings that are tracked and updated every 18 seconds. Intelli-Time clock automatically adjusts for Daylight Saving Time (DST). Humidity level indicator easily conveys a low, high or ideal indoor humidity level. The display stands upright for tabletop use. The 3-in-1 wireless weather sensor features three different technologies in one easy-to-mount unit: thermometer, hygrometer and wind speed anemometer. It is easy to set up, includes mounting hardware, and features a 2-year battery life for maintenance-free operation. Requires 4 AA batteries (not included). Indoor temperature range: 32-122 degrees F. Indoor unit dimensions: 7.5” H x 3.6” W x 1.6” D. Outdoor temperature range: -40-158 degrees F.