9 electric apparatus and instruments; measuring, signalling and monitoring equipment; heat meters; equipment for testing and calibrating heat meters; electrical and electronic remote control, remote metering and remote monitoring equipment; data transmission equipment; data processing equipment; measuring, control and regulating apparatus for non-electrical quantities; measuring, control and regulating apparatus of all kinds for heating, ventilation and air conditioning and their components; electronic controlling, regulating, measuring and signalling equipment and installations for building management systems and building services systems; burner and flame monitors, U.V. detectors, smoke detectors and oxygen probes; software