Air Sensing Switch, HVAC OEM, Differential (In. WC) 0.03 to 0.09, SPDT Switch Type, Pressure Setting Range (In. WC) 0.10 - 10.0, Electrical Rating 1/10 hp @ 120 to 277V AC, 125 VA Pilot Duty @ 120V AC, 28 VA Pilot Duty @ 24V AC, Sample Line Connector 1/4 in OD, Height (In.) 1 11/16 in, Width (In.) 3 7/16 in, Depth (In.) 3 1/16 in, Dia. (In.) 2 1/2 in, Mounting Holes O.C. (In.) 3 5/32 in, Operating Temp. Range (F) -40 to 180, Residential Furnaces, CE and CSA Certified, UL and C-UL listed