Johnson Controls P233A-4-PAC Differential Pressure Switch

Johnson Controls SPDT differential pressure switch with 50 to 400 Pa range and <0.3 Mbar differential. This switch senses a change in the (differential) pressure as the airflow changes. The (differential) pressure is applied to the two sides of a diaphragm in the control. The spring-loaded diaphragm moves and actuates the switch. The series P233A/F can also be used to detect small positive gauge pressure or to detect a vacuum.