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2. Pressure switch - Wikipedia

   en.wikipedia.org/wiki/Pressure_switch

   Switch enclosures may also be required to be weatherproof, corrosion resistant, or submersible. An electronic pressure switch incorporates some variety of pressure transducer (strain gauge, capacitive element, or other) and an internal circuit to compare the measured pressure to a set point. Such devices may provide improved repeatability ...

3. Johnson Controls - Wikipedia

   en.wikipedia.org/wiki/Johnson_Controls

   Johnson Controls office in Ontario. Johnson Controls International plc is an American, Irish-domiciled multinational conglomerate headquartered in Cork, Ireland, [3] that produces fire, HVAC, and security equipment for buildings.

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5. Furnace - Wikipedia

   en.wikipedia.org/wiki/Furnace

   Furnace (central heating): a furnace, or a heater or boiler, used to generate heat for buildings; Boiler, used to heat water; also called a furnace in American English when used for heating and hot water in a building; Jetstream furnace or Tempest boiler, a design of wood-fired water heater

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9. Windcatcher - Wikipedia

   en.wikipedia.org/wiki/Windcatcher

   The windcatcher can function in two ways: directing airflow using the pressure of wind blowing into the windcatcher, or directing airflow using buoyancy forces from temperature gradients (stack effect). [2] [4] The relative importance of these two forces has been debated. The importance of windpressure increases with increasing wind speed, and ...