Electric or electronic sensors for energy measurement equipment; Electric or electronic sensors for voltage measurement; Electric or electronic sensors for high-voltage sensing equipment and lower voltage synchrophasor applications, namely, high voltage current sensors; Electric or electronic sensors for phasor measurement units; Electric or electronic sensors for high voltage measurement equipment, namely, voltage sensors; Electric or electronic sensors for voltage and current transformers

Repair, installation, and maintenance of energy measurement equipment, namely, voltage transformers and current transformers; Repair, installation, and maintenance of high-voltage sensing equipment and lower voltage synchrophasor applications, namely, high voltage current sensors, high voltage voltage sensors and phasor measurement units