Metal detectors; Inverters for power supply; Security alarm controllers; Fire and smoke detectors; Converters for electric plugs; Solar batteries; Photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and concentrating optics, and control algorithms; Electric plugs; Converters, electric; Carrying cases, holders, protective cases and stands featuring power supply connectors, adaptors, speakers and bat...