Oregon Scientific WGR800 Professional Wind Sensor with Poles and Complete Mounting Kit

Measures wind speed and wind direction for the WMR80, WMR90, WMR100, WMR200. Features: Dimensions (L by W by H) 178 by 76 by 214 mm (7 by 3 by 8.4-inch). Weight 100 g (0.22-pound) without battery. Wind speed unit m/s, kph, mph, knots. Speed accuracy 2 m/s 10 m/s (+/- 3 m/s). 10 m/s 56 m/s (+/- 10-percent). Direction accuracy 16 positions. Transmission of Approx. every 14 seconds wind speed signal. Records maximum speed gust. Battery 2 by UM-3 (AA) 1.5V batteries