Lab, bench, production and utility electrical and electronic measuring and testing products, namely, AC power sources, frequency converters, AC power supplies, DC power supplies, DC power sources, DC electronic load measurers and testers in the nature of digital or analog multimeters, AC electronic load measurers and testers in the nature of digital or analog multimeters, AC source measurers and testers being clamp meters for measuring electricity, and DC source measurers and testers being clamp meters for measuring electricity; and excluding batteries, mechanical and hydroelectric energy generating devices, remote sensors, accelerometers, voltage sensors, current sensors, microphones, conduits, electronics enclosures (sold empty), waterproof enclosures, permeable pavers, pavers, slabs, walkways, pathways, sidewalk systems, roads, snowmelt systems, heated sidewalks, heated roads, decorative flooring, decorative pavers, DC-DC converters, microprocessors, UPS, inverters, solar panels, power combiners, switchgears, and energy meters