Pesawat penerima radio, televisi, tape recorder, video, mesin bicara, gramaphone, rewinder, amplifier, loudspeaker, microphone, megaphone, headphone, wireless, VCD, optik, kaca mata, lensa-lensa, mikroskop, teropong, teleskop, pesawat komunikasi, telephon , walky talky, handy talky, pesawat telex, pita-pita magnetik, pita cassette, pita video recorder, laser disk, piringan hitam, compact disk (audio video), antena, booster, radar, parabola, accu, kotak accu, baterai, pengisi baterai, batu baterai, kotak-ko tak listrik