As a critical furnace high limit sensor

this 24V relay ensures stable switching under demanding thermal conditions

Honeywell 14004625-005 Replacement Disc

Common Questions What causes a 170 degree limit switch to trip frequently

Cleveland Controls DFS-243 Switch Els PW 17895 As a critical furnace highThe Cleveland Controls DFS 243 is a mission critical fixed set point air flow switch designed for HVAC air pressure sensing in duct heaters, ovens, and energy management systems. Engineered as a nonadjustable differential pressure switch, it provides reliable proof of flow by operating on a pressure rise at 0. 05" . 02" w. c. This SPDT air flow switch features a snap acting mechanism housed in a plated metal casing, making it ideal for surface