Ammeters; Inverters; Thermo-hygrometers; Thermocouples; Thermostats; Voltmeters; Wattmeters; Cable connectors; Circuit breakers; Electric contacts; Electric junction boxes; Electric relays; Electric storage batteries; Electrical distribution boxes; Electrical switches; Electricity meters; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Indicator lights for circuit boards; Photoelectric sen...