Radio, radio cassette, televisi, tape recorder, amplifier, ìpower ampli, loudspeaker, speaker box, VCD,video, mesin bicara, ìgramaphone, pickup, rewinder, microphone, megaphone, headphone, ìwireless, optik, kaca mata, lensa - lensa, mikroskop, teropong, ìteleskop, pesawat komunikasi, telephone, airphone, walky talky, ìhandy talky, pesawat telex, pita-pita magnetik, pita cassette, ìpita video disk recorder, laser disk, piringan hitam, compact ìdisk (audio, video), antena, booster, radar, parabola, accu, ìbaterai, batu baterai,bel listrik, kabel listrik,kabel telepon, ìtransformator, travo, ballast, step up, step down, mesin faksi- ìmili, komputer, mesin hitung, kalkulator, kas register, mesin ìteleks,printer, pesawat-pesawat ukur, spedometer, ampere meter, ìmeteran listrik, volta meter, modem - modem, monitor (program ìkomputer), cpu, stop kontak, sakelar, switch - switch, fiting- ìfiting, kombinasi fiting, stecker, sonar, seterika listrik, ìmesin fotocopy,disket, pesawat-pesawat pemadam api, alat solder ìlistrik, alat fotografi, kamera