Turn on, turn off the appliance, low-frequency hum: Listen & Download Turn on, turn off the appliance, .mp3 Error! Change your browser, please! ⇓ Download Switch ⚠ Shoots an electric arc indoors ⚠ Shutdown,, Electronic energy, start up ⚠ Electric sparks ⚠ Low frequency electric drone, movement ⚠ Electrical discharge surge ⚠ Low frequency rumble ⚠ Wall switch ⚠ Small electric motor ⚠ Small switch, toggle switch ⚠ Discharge, Current, electricity ⚠ Multichannel switch ⚠ ★★★★★