Pressure Sensing Switch, HVAC/General Purpose, Differential (In. WC) 0.02 to 0.8, Switch Type SPDT, Pressure Setting Range (In. WC) 0.05 to 12.0, Electrical Rating 300 VA Pilot Duty at 115 to 277 VAC, 15 amps Noninductive to 277 VAC, Sample Line Connector 1/4 In Slip-On, Height (In.) 5-13/16, Width (In.) 3-1/4, Depth (In.) 2-7/8, Mounting Holes O.C. (In.) 3-7/8, Mounting Location Vertical, Includes Slip-On 1/4 In OD Tubing Adapter, Sample Line Probes, Orifice Plugs HVAC/DDC, HVAC OEM, and General PurposePressure-Sensing SwitchesSense positive, negative, or differential air pressure. Negative pressure rating same as positive.For residential, light commercial mid-efficiency furnaces, and direct digital control (DDC) applications. 2E462 includes ferrules, one 12" length of 1/4" O.D. flexible tubing, and 1/4" O.D. tubing nuts.UL Listed, CE and CSA Certified.UL recognized component.Mount with diaphragm in vertical planePressure-Sensing Switches and Probes