Optical communication equipment, namely, optical transmitters, optical receivers; electric test and calibration devices for calibrating and testing ammeters and galvanometers; ammeters; surveying apparatus and instruments; automation system for power plants comprised of ammeters, voltage meters, non-contact voltage testers, multimeters, intelligent motor protector in the nature of voltage surge protectors, harmonic analyzers and insulation resistance testers, network communication and backend...

Optical communications systems comprised of optical and electronic hardware and computer software for the transmission of data between two points; astronometric measuring machines and instruments; electric meters; testing and measuring equipment for use in testing the performance and efficiency of power plant equipment; electro-dynamic apparatus for the remote control of railway points; distribution transformers; current rectifiers; automated process control system, namely, micro-processor ba...