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Model 530 | Vane Operated Air Flow Switch is sensitive and reliable at a good price. Mounting is fast and simple. Quality features include a rugged die cast body, stainless steel vane
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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
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Honeywell Mechanical Air Flow Paddle Switch - China Air Differential Pressure Switch, Switch | Made-in-China.com
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