Common metals and their alloys, ores; metal materials for building and construction; metal ducts for ventilating and air conditioning installations; grilles of metal

Electronic and electric controllers for air conditioning, ventilation, heating and cooling apparatus, devices and installations; communications controllers; digital controllers; electronic controllers; power controllers (electric); programmable controllers; network controlling apparatus; speed controllers (electronic); temperature controlling apparatus; temperature monitors, thermal sensors (thermostats); devices and controlling apparatus (thermostats, other than valves) for central heating installations; thermostat controllers for heating installations; electric apparatus for controlling the operations of machines; electrical apparatus for controlling the speed of motors; electronic instruments for controlling systems in buildings; electrical resistances for incorporation into ventilating apparatus; electrical apparatus for reversing the speed of motors; speed controllers (non electronic)