Optical communication devices, namely, optical probes in the nature of optical sensors for data exchange between electric energy meters or gas meters, and other metering equipment, optical transmitters and optical receivers; intercommunication apparatus, namely, modem, sound amplifiers, and electrical outlet sockets; electric connectors and couplers; instrument transformers; electric signs

Water meters; Optical scanners, other than for medical use; Optical transmitters; Transceivers; Electricity metering apparatus; Electrical cable; Multimeters for measuring electrical voltage; Multimeters for measuring electrical resistance; Electronic instruments for the measurement of electrical parameters; Meters for measuring electrical voltage; Meters for measuring electrical resistance; Electric power analysers; Electric circuit testers; Electricity connectors