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 277 VAC 28 VA Pilot Duty @ 24 VAC 125 VA Pilot Duty @ 120 VAC Sample Line Connector 1/4 in O.D. Height (In.) 1-11/16 Width (In.) 3-7/16 Depth (In.) 3-1/16 Dia (In.) 2-1/2 Mounting Holes O.C. (In.) 3-5/32 Operating Temp Range (F) -40 to 180 Residential Furnaces UL and C-UL listed CE and CSA Certified