The WSA100 series is a three-cup anemometer that monitors wind speed for the range of 0 to 60 m/s with a threshold of 0.8 m/s. The WSA100 is constructed of corrosion-resistant, stainless-steel and aluminum alloy.It's three-cup anemometer assembly contains a sealed magnetic reed switch. Rotation of the cupwheel produces a output signal that is directly proportional to wind speed.