Robertshaw SPDT Adjustable Differential Air Sensing Pressure Switch (.25" - 1.0" WC) The new 2374 Series Adjustable Air Sensing Switches are designed to replace a wide variety of air-sensing switches found in residential and light commercial applications including - furnaces, electronic air cleaners and humidifiers. Two models are currently available with an adjustable range of .2" W.C. to 1.0" W.C. or 1.0" W.C. to 4.0" W.C. Both models are provided with an SPDT switch that can be actuated by positive or negative pressure, or by pressure differential. Highly accurate, these switches are practically insensitive to temperature change with an operating temperature range of ?40
°F to 190
°F (?40
° to 88
°C). They are U.L. and C.S.A. approved for aftermarket applications. Each switch is provided with mounting hardware and an adjustment tool for easy installation and calibration. Specs: Max Pressure (PSI): .5 PSI Switch: SPDT Electric Connection: 1/4" spade Ambient Temperature: -40
°F to 190
°F Mount: Diaphragm Vertical Setpoint Range: 0.25" to 1.0" WC Max Pressure (PSI): .5 PSI Switch: SPDT Electric Connection: 1/4" spade Ambient Temperature: -40
°F to 190
°F Replaces: A.J.ANTUNES SMM Functional All SMM models CLEVELAND CONTROLS RSS495-037 Exact CLEVELAND CONTROLS RSS-495-11 Exact ROBERTSHAW 2374-510 Functional UNI-LINE 12533 Exact UNI-LINE 66201312533 Functional UNI-LINE RSS-495 Functional W.W. GRAINGER 3ZM96 Functional