RainWise is a company that manufactures professional meteorological equipment for consumer and industrial applications. The company manufactures solar powered wireless weather stations, data loggers, rain gauges, anemometers, barometers, thermometers and a variety of other weather products. The MK III, RainWise s newest development, features a solar-powered rooftop sensor unit design and features the Weather Oracle MK III multi-window display. The design also features an optional wired or wireless rain gauge. RainWise is an approved General Service Administration Contractor and provides meteorological instrumentation for the U.S. Naval Observatory, NOAA, the National Weather Service, NASA, The U.S. Coast Guard, U.S. Navy Research Laboratory and the Army Corps of Engineers. The company is based in Bar Harbor, Maine.