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this direct OEM replacement ensures your furnace or boiler maintains a consistent 3
enabling comprehensive monitoring of pressure
the inclusion of T4002 mounting hardware
Common Questions: Can the A/RH2-D be used with both AC and DC power
Dwyer Instruments AAFS Switch 30067439-890 this direct OEM replacement ensuresThe Dwyer Instruments AAFS Adjustable Air Flow Paddle Switch is a heavy duty sensing solution engineered to monitor and verify air flow velocity in HVAC and industrial ductwork. Designed to handle air and compatible gases, this unit features a field adjustable SPDT switch, allowing for precise setpoint selection between 200 to 1800 FPM. As the direct replacement for F40AA 2, it offers a drop in upgrade for legacy systems requiring reliable proof of
