PH (piringan hitam ), pita cassette, pita video disk recorder, laser disk, piringan hitam, CD/compact disk (audio, video), VCD, DVD, pita-pita magnetik, segala macam jenis antena, segala macam tipe antena, antena-antena, antena CB, antena mobil, antena TV, antena bracket, antena magnetbase, round rotator (alat untuk dipakai pada antena), antena outdoor/luar, antena indoor/dalam, antena parabola, radar, pesawat penerima radio, televisi, tape recorder, video, mesin bicara, gramaphone, rewinder, amplifier, loud speaker, microphone, megaphone, headphone, wireless, optik, kaca mata, lensa-lensa, mikroskop, teropong, teleskop, pesawat komunikasi, telephone, airphone, walky talky, handy talky, pesawat telex, accu, baterai, bel listrik, kabel telepon, transformator, travo, ballast, step up, step down, mesin faksimile, komputer, mesin hitung, kalkulator, kas register, printer, pesawat-pesawat ukur, speedometer, ampere meter, meteran listrik, volta meter, modem-modem, monitor (program komputer), CPU, stop kontak, sakelar, switch-switch, fiting-fiting, kombinasi fiting, stecter, sonar, seterika listrik, mesin fotocopy, disket, pesawat-pesawat pemadam api, alat solder listrik