Cleveland Controls AFS-442 Sensing Switch Mercury-Free Design: Reliable snap-action switching

Mercury-Free Design: Reliable snap-action switching eliminates environmental hazards and leveling concerns during mounting

Designed for commercial gas regulator maintenance and industrial meter sets

While it fits standard Johnson Controls mounting brackets

a dirty air filter

Common Questions: What units is the Reznor 141570 compatible with

Cleveland Controls AFS-442 Sensing Switch Mercury-Free Design: Reliable snap-action switchingThe Cleveland Controls AFS 442 is a professional grade air pressure sensing switch designed for critical monitoring in HVAC and energy management systems. Engineered for precision, this differential pressure switch features SPDT contacts and an adjustable set point range from 0. 05" w. c. to 2. 0" w. c., making it the industry standard for proving airflow in package burners and furnaces. The AFS 442 is technically identical to the AFS 442 3, ensuring