Sakelar, switch - switch, fiting - fiting, kombinasi fiting, perlengkapan-perlengkapan untuk menghubungkan - memutuskan - menyambung aliran listrik, panel-panel listrik, box meteran listrik, ampere meter, KWH/meteran listrik, volta meter, stop kontak, sakelar, stecker, sonar, optik, kaca mata, lensa-Iensa, mikroskop, teropong, teleskop, pita-pita magnetik, pita cassette, pita video disk recorder, MP3 player, MPE G4, wireless CCTV, speaker, digital video recorder, walky talky, laser disk, piringan hitam, compact disk (audio, video), antena, booster, radar, parabola, accu, baterai, batu baterai, bel listrik, transformator, travo, ballast, stepup, stepdown, pesawat-pesawat ukur, speedometer, seterika listrik, mesin fotocopy, disket, pesawat-pesawat pemadam api, alat solder listrik