- Oregon Scientific temperature and humidity station with atomic time - Track the indoor and outdoor temperature - Know your home's humidity - high and low humidity readings - Light up your weather display - backlight for easy viewing in lowlight conditions - Ice alert function: green LED light blinks when outdoor temperature nears icy conditions - Automatically sets itself to the US atomic clock for precise time and adjusts for daylight savings time - Features calendar and US time zones - Wirelessly transmits data from 100 feet away - Requires 2 AA (main unit) and one AA (sensor) batteries (not included