9 Apparatus and instruments for weighing, measuring, signaling, automation, control and checking apparatus, systems and instruments, namely sensors for measuring water or air temperatures, digital signal processors, pressure sensors; computer controlled apparatus, namely computer based apparatus for designing the layout of heating and cooling systems and flow and temperature measuring instruments; computer controlled systems for measure and control of flow and temperature primarily comprising gauges, displays, sensors and timers; and systems, namely computer based systems for designing the layout of heating and cooling systems and flow and temperature measuring systems comprising gauges, sensors and timers, circuit boards and computer software for use in the field of heating, ventilation and air conditioning, all the aforementioned goods for heating, cooling, ventilation, water supply, temperature adjustment, power supply, air conditioning and security devices in buildings; transformers, rheostats, and structural parts for the aforementioned goods