Electrical and optical measuring, signaling and control devices and equipment, namely, high-precision Ohm meter for resistance measurement, measuring devices for energy quality measurement and devices for planning, modeling, determining and measuring consumption in energy supply systems; testing devices for testing electrical switches, relays, electrical energy meters and switching devices; electrical switchgear, namely, electronic power sources for electrical switchgear; voltage and current testing, monitoring and fault recording devices for electrical power supply systems; measuring devices for energy quality measurement; electrical energy utilization metering devices for determining the consumption schedules of energy supply systems; line fault detectors for high-voltage cables; downloadable and recorded operating software and software applications for the aforementioned goods; systems for testing and monitoring high voltage supply grids comprised of voltage and current testing devices, resistance measuring devices, monitoring and fault recording devices and energy quality measurement devices; components and spare parts included in this class of all aforementioned goods.

Paper; printed matter, namely, paper signs, books, manuals, curricula, newsletters, information cards and brochures in the fields of circuit breaker testing, relay testing, resistance measurement, electronic power sources, fault recording and energy quality measurement; printed manuals and printed instruction sheets in the fields of circuit breaker testing, relay testing, resistance measurement, electronic power sources, fault recording and energy quality measurement.

Installation, maintenance and repair of electrical and optical measuring, signaling and control devices and equipment, of testing devices for electrical switches, relays, electrical energy meters and switching devices, of switchgear for electrical power supply, of testing, monitoring and fault recording devices for electrical power supply systems, of measuring devices for energy quality measurement, of devices for determining the consumption schedules of energy supply systems, of line fault locators and devices for high­ voltage technology as well as of equipment and systems comprised of the aforementioned goods.

Technical and scientific consultation in the field of electrical power supply design; technical consultation in the field of power plant engineering, namely, testing and evaluation of power plant equipment to improve performance and efficiency of the equipment; technical verification of power system designs; quality control consultation for energy quality measurement devices and devices for testing, monitoring, and recording the operational status of electrical power supply systems; scientific consultation related to electrical power supply systems; production, namely, development and programming, installation, updating, design and rental of computer operating software and software applications for electrical and optical measuring, signaling and control devices and equipment, of testing devices for electrical switches, relays, electrical energy meters and switching devices, of switchgear for electrical power supply, of testing, monitoring and fault recording devices for electrical power supply systems, of measuring devices for energy quality measurement, of devices for determining the consumption schedules of energy supply systems, of line fault locators and devices for high-voltage technology as well as of equipment and systems comprised of the aforementioned goods.