York S1-FM501 Filter 326058-756 The Cleveland Controls AFS-227-121 is

The Cleveland Controls AFS-227-121 is a professional-grade air flow switch and differential pressure sensing switch designed to tackle complex HVACR and energy management applications

Can I use this as a universal HVAC drain pan

Featuring a 24 VAC/DC coil for logic-level activation

High-torque actuators like the AFB or NFB utilize different clamp geometries (such as the K7-2) to handle their higher rotational force

this surface-mount instrument is a staple for HVACR technicians servicing hydronic heating systems

York S1-FM501 Filter 326058-756 The Cleveland Controls AFS-227-121 isThe York S1 FM501 is a high efficiency deep pleat media filter designed specifically for 5 inch filter cabinets in residential HVAC systems. Engineered as a direct replacement for S1 MAC11202506 and S1 LFMA2025 models, this filter features a MERV 11 rating, providing a significant upgrade over standard pleated filters by capturing a broader spectrum of airborne contaminants, including dust, pollen, and pet dander. The low pressure drop design ensures