Turn on, turn off the appliance, low-frequency hum:
-
Movement, Low frequency electric drone
-
Electric sparks
-
Start up, shutdown,, Electronic energy
-
Turn on, turn off the appliance,
-
Low frequency rumble
-
Wall switch
-
Multichannel switch
-
Button click
-
Small electric motor
-
Electric discharges, Jacob’s ladder
-
Current, discharge, electricity
-
Tesla coil, Electric discharges
★★★★★