The AcuRite Digital Home Weather Station for Morning, Noon, and Night Precision Forecasting with Temperature/Humidity Gauges uses patented self-calibrating technology to create and provide your personal forecast of morning, noon, and night (4-hour, 4- to 8-hour, and 8- to 12-hour) weather conditions. Precision forecasting technology combines North America's regional weather patterns with data measured by a sensor in your yard to generate the most accurate forecast available for your exact location. The bold, easy-to-read color LCD includes indoor and outdoor temperature and humidity, barometric pressure history, an Intelli-Time clock, and calendar. The Intelli-Time clock automatically updates itself for Daylight Saving Time. This ideal gift for Christmas, Father's Day, or birthdays stands upright for tabletop use or is wall-mountable. The outdoor sensor features powerful wireless technology, a weather-resistant design, and an integrated hanger for easy mounting. Indoor display runs on AC power or uses 3 AA batteries (not included) for optional battery backup. Outdoor sensor requires 2 AA batteries (not included).Manufacturer model #: 02007A1. Illuminated color display provides easy readability in a visually pleasing presentation Quick-read indoor/outdoor temperature and humidity measurements that feature trend arrows and daily highs and lows Barometric pressure gauge with trend arrow Precision forecasting shows weather for future intervals to plan your day with confidence Strong 433MHz signal from remote sensor penetrates walls for 330' of range (final range depends on home construction materials)