Miniaturised ceramic gas sensor technology, developed originally for measuring oxygen levels around spacecraft reentry vehicles, is now being used in systems that accurately control heater combustion, one of the major sources of pollutants. They reduce exhaust gases that are harmful for the environment and at the same time lessen the fuel consumption by 10–15%. Developed by TU Dresden and German company EXCUBE from European space technology, and supported by ESA’s Technology Transfer Programme and its partner MST, this technology is now used by the German company ESCUBE in systems controlling industrial heaters.