Elektronik yaitu: pesawat televisi, tape recorder, amplifier, speaker, equalizer, tuner/ radio, compact disc player, VCD player, DVD player, laser disc player, kabel audio, microphone, pesawat telepon, mainan video, computer disk, disk dan pita audio dan video, pesawat video, antena parabola, booster, ballast, trafo, bel listrik, mesin teleks, audio mixer, professional power amplifier, sound processor (compressor limiter, active-crossover, professional equalizer, echo, delay), professional speaker system (untuk band, untuk lapangan, untuk studio), mesin penjual, mesin-mesin bicara, kas register, batu battery, pesawat penggerak otomatis