Inverters; Rectifiers; Transformers; Battery charge devices; Chargers for electric accumulators; Circuit boards provided with integrated circuits; Computer peripheral devices; Computer servers; Converters for electric plugs; DC/AC power converters; Downloadable computer programs for the enabling of access or entrance control; Electric control devices for energy management; Electric power converters; Electric sensors; Electrical inductors; Electronic frequency converters for high velocity electro motors; Electronic integrated circuits; Fuel cells; High voltage transformers; Low-voltage power supplies; Microwave antennas; Power controllers; Radio-frequency transmitters; Radio transmitters; Rechargeable batteries; Rectifier modules; Semiconductor devices; Telecommunications transmitters; USB charging ports; Voltage stabilizing power supply; Wireless chargers