Turn on, turn off the appliance, low-frequency hum:
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Wall switch
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Electrical discharge surge
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Electric discharges, Jacob’s ladder
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Electric sparks
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Start up, shutdown,, Electronic energy
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Turn off the appliance,, Turn on
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Tesla coil, Electric discharges
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Low frequency electric drone, movement
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Low Frequency Electric Drone
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Toggle switch, Small switch
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Multichannel switch
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Shoots an electric arc indoors
★★★★★