Johnson Controls P233A-4-AAC Air Differential Pressure Switch

The Johnson Controls P233A-4-AAC International Differential Air Pressure Switch is a control device in the HVAC systems whose main function is to regulate air pressure differentials. This SPDT switch comes with a temperature range of operation between -40° F to 190° F to cater for ambiguous climate. Its design allows easy installation through a 1/4 quick connecting terminal; the switching pressure span ranges from 0.2“w.c to 4 “w.c to match system pressure. This pressure switch is mainly applied in HVAC equipment such as air handling units, furnaces and any kind of ventilation.