Windy Anemometer use external Navis wireless sensors to measure wind speed, direction and air temperature. Compatible sensors: WINDY B/S, WINDY B/SD, WINDY FB Features: - current, average and maximum wind speed - wind direction - air temperature - windchill - graphical and sound alarm - history graphs - logging data to internal memory - sending data to Navis LIVEDATA web interface Don't have Navis wind sesnsors yet? Get them at http://www.navis-anemometers.com