Pneumatic Relay; Type Pneumatic; Operation Type Output Varies Inversely with Input with an Adjustable Offset; Action Type Reverse; Set Point Range 0 to 18 PSI; Air Connection Barb Fitting (3) 5/32 Inch Outer Diameter, (1) 1/4 Inch Outer Diameter Plastic Tubing; Air Flow Rate 0.002 CFM; Overall Dimensions 1-1/2 Inch Diameter x 2-1/4 Inch Depth; Temperature Rating 0 to 140 Deg F; Differential Pressure Range 1 PSI; Pressure Rating 30 PSI; Mounting Type In-Line/Wall/Panel; Inclusions/Features 1-1/2 Inch Mounting Clip; Application HVAC System; Operating Humidity 5 to 95 Percent RH; Material Molded Plastic