Model AAFS is capable of detecting a range of air velocities with minimal user calibration. The adjustable screw changes the setpoint at which the SPDT snap switch engages. Features include a stainless steel vane, galvanized steel base, and ABS enclosure. The unit is field adjustable from 200 to 1,800 fpm (1 to 9.2 m/sec).
Dwyer Instruments Inc.