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Extended Lead Capacity: High resistance variation per degree allows for lead extensions up to 800 feet with minimal signal degradation
this sensor monitors the burner flame and transmits a microamp signal to the control board to verify ignition
the 0342691 is the updated manufacturer replacement for the discontinued 0342670
Designed as a high-performance Lennox replacement part
Cleveland Controls DFS-221-228 Pressure Switch Extended Lead Capacity: High resistanceThe Cleveland Controls DFS 221 228 is a high reliability, non adjustable airflow proving switch designed for critical monitoring in duct heaters, ovens, and sophisticated energy management systems. Engineered for technicians who require a "set and forget" solution, this SPDT air pressure switch is factory fixed to operate on a pressure rise of 0. 05 0. 02" w. c., ensuring precise safety interlocks. Its compact, open mounted design is specifically
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