Model AAFS | Adjustable Air Flow Paddle Switch has a stainless steel vane, galvanized steel base, and ABS enclosure. Applications include air flow proving in HVAC systems. | Dwyer Instruments
Air Flow Switch - Temco Controls Ltd.
Fan Air Flow Switch with - China Water Flow Switch, Flow Switch | Made-in-China.com
Air Flow Switch - Temco Controls Ltd.
Compact Fan And Filter Fan Air Flow Monitor Free Lc 013 Temperature Switch - Switches - AliExpress