9 Scientific apparatus and instruments, namely, sensor chips, conductivity meters; electric apparatus and instruments, namely, switches, time switches, circuit breakers, master switches, gang switches, accumulators, conductors, cables, coils; weighing apparatus and instruments; signaling apparatus and instruments, namely, signal processors, rotating lights; checking apparatus and instruments, namely, electronic systems for monitoring the status of doors and windows whether open, closed, secured; apparatus for recording, transmission or reproduction of sound and images; pre-recorded magnetic data carriers featuring data concerning facilities operation, namely, thermal conditions, air circulation speed and volumes, general building maintenance data, presence or absence of residents in their flats, presence or absence of cars in garage places, fire-extinguishing apparatus, pre-recorded digital recording discs featuring music; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; apparatus and instruments for scientific research in laboratories, namely, furniture, glassware, filters, thermometers, storage tubes, electric bath heaters; apparatus to convert electronic radiations into electric energy, namely, photovoltaic solar modules; computers hardware and software for facilities management, namely, controlling building environment, access and security systems