McDonnell & Miller AF-2 Switch R-410A you know that maintaining precise

you know that maintaining precise airflow in International Environmental Corporation (IEC) systems is non-negotiable

Built with a 24V AC 50/60 Hz coil and rated for 40A inductive (50A resistive) loads

ensuring optimal airflow and system static pressure

a different 80-series model is required

Yellow shows the pump is actively running

McDonnell & Miller AF-2 Switch R-410A you know that maintaining preciseThe McDonnell & Miller AF 2 Air Flow Switch (Part Number 123200) is a specialized low velocity air flow switch engineered to prove fan operation and monitor airflow in critical HVACR systems. Built for durability, this field proven unit features brass, steel, and aluminum construction, making it ideal for standard commercial and industrial duct environments. The integrated snap acting SPDT switch provides reliable signaling for interlocking blowers,