The pneumatic switch is a miniature momentary time delay switch. Pressing on the actuation button of the switch actuates the switches contacts. The contacts stay actuated for a time delay, which is adjusted using the brass knob at the back of the switch. Turning the brass knob controls an internal flow of air that regulates the time delay. These units are used in many switch assemblies for security and industrial control applications. 

Pneumatic component test stand is used to accomplish the testing required by the commercial overhaul manual or technical order. These test stands provide instrumented and controlled airflow to the components, and provide any electrical, mechanical, or pneumatic stimulus to the component required for actuation. This equipment is used to measure the pressures, temperatures, flows, mechanical speeds, shaft excursions, voltage, current and frequencies.