Air Differential Pressure Switch. Suitable for applications where airflow proving or filter monitoring is required. The switching set point is adjusted by a knob mounted under the main cover.
Pressure Switch comes complete with a duct fixing kit, consisting of PVC Hose and 2 plastic duct adaptors.
It has a set of normally open and normally closed contacts allowing monitoring of both rises and falls in pressure.
The switch is commonly used with a Kitchen Gas Interlock panel where air proving is necessary to allow Gas flow, and to monitor filters to notify you when they are dirty and need replacing.