Thermostat Pneumatic (TP) is a type of automatic control system used in HVAC and industrial applications. It uses an external sensing device, typically a self-regulating pneumatic actuator, to regulate the air temperature or pressure within a defined range. The TP senses changes in the ambient environment via its attached sensor and responds by opening/closing valves, dampers, or other mechanical components to control the flow of ambient air. This ultimately helps to regulate climate in a building or area, improve energy efficiency, optimize processes, and reduce operating costs.