Classic Wind Speed Sensor / 3-Cup Anemometer

Inspeed's Classic Wind Speed Sensor - Anemometer Inspeed's rugged and affordable Classic 3-Cup Anemometer is a high quality, Inspeed-designed, Made In America wind speed sensor a variety of wire lengths available.  We call it "Classic" because it's the one that got us started back in 2005, and still going strong. World Class Accuracy:  based on wind tunnel testing in 2024, the accuracy of the "Classic" design is better than the greater of +1mph or +1% of reading between 7 and 100mph.  Hard to beat for the price, to be sure. The Classic wind speed sensor uses a reed switch as the active element, with a magnet in the rotor that causes it to close momentarily once per rotation.  The conversion factor from pulse rate to wind speed is in the specifications below. The base product has 25' of wire - but we offer standard options for 50', 100', and 200' feet.  If you need more - reach out to us - we can do up to 1,000' no problem! The shaft has a Tungsten Carbide ball pressed into the end, whi