What is the difference between the A19ABA-44 and the A19ABA-44C

typically mounted on the furnace plenum or blower housing

facilitating a direct connection to the CN105 port on the indoor unit PCB

As a veteran-grade OEM replacement lamp

Johnson Controls P170LB-1 Pressure Control R-410A What is the difference betweenThe Johnson Controls P170LB 1 is a professional grade Dual Pressure Control engineered for precise management of both high side and low side pressures in commercial refrigeration and air conditioning systems. This electromechanical controller features a Single Pole Single Throw (SPST) switch action, providing reliable cut out and pump down control by opening the circuit when pressures exceed or fall below your specific setpoints. The low pressure side