Johnson Controls P499RCH-401 Pressure Transducer 319852-301 This auto-reset furnace limit switch

This auto-reset furnace limit switch effectively prevents over-temperature conditions in air handlers

meaning the contacts cannot be forced closed by holding or taping down the reset button

allowing field technicians to provide occupants with immediate comfort tuning

Safety Verified: Factory-authorized part designed to meet original equipment specifications for flame sensing and ignition timing

Johnson Controls P499RCH-401 Pressure Transducer 319852-301 This auto-reset furnace limit switchThe Johnson Controls P499RCH 401 is a high accuracy refrigeration pressure transducer engineered for demanding HVACR environments. Designed to provide a linear 0. 5 to 4. 5 Vdc output signal, this ratiometric sensor monitors a pressure range of 1 to 8 Bar, making it ideal for low side suction monitoring or head pressure control in light commercial systems. The unit features a durable stainless steel construction and is compatible with all common non