Polycarbonate, 3-Cup anemometer that is calibrated to a master to be interchangeable.

Uses a Hall Effect Digital Switch (Allegro #A1106EUA-T) to directly drive digital circuitry. Output frequency is identical to the #400 and #41.

Swept Diameter: 7.5″
Diameter Housing: 2.0″
Overall Height: 3.2″
Weight: 3.0 oz