Digital multimeters; multimeters; electric meters; voltage meters; ammeters; ohmmeters; thermometers; electronic instruments for measuring temperature; temperature gauges; [ electrical, metal, optical, and telecommunication cable analyzers; electrical, metal, optical, and telecommunication cable testers; ] Digital insulation multimeters; [ network testers; wireless network testers; electrical, metal, optical, and telecommunication cable certification testers; optical fiber testers; optical fiber certification testers ]