The two SPDT auxiliary switches are used to signal when the actuator reaches specific rotation points

and extreme temperature fluctuations common in outdoor commercial HVAC settings

making it a drop-in solution for standard mounting brackets

For potable water requirements

and transformer outputs

Johnson Controls P499RCH-401 Pressure Transducer 320720-756 The two SPDT auxiliary switchesThe 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