Small electric motor:
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Low frequency rumble
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Toggle switch, Small switch
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Movement, Low frequency electric drone
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Turn on, turn off the appliance,
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Multichannel switch
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Electricity, Current, discharge
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Shutdown,, Electronic energy, start up
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Electric discharges, Tesla coil
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Jacob’s ladder, Electric discharges
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Wall switch
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Electric sparks
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Button click
★★★★★