Cleveland Controls RFS-4001-110 SPDT Air Pressure Switch

Adjustable SPDT air pressure switch for commercial HVAC and ventilation systems. Field-adjustable setpoint range 0.15" to 20.0" w.c. with 15A non-inductive contact rating. Senses positive, negative, or differential pressure in air handlers, furnaces, and ductwork. Includes 1/2" conduit enclosure and compression ferrule connections for 1/4" OD tubing.