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SpeakerDevice5SpeakerDevice is a type of device that converts electrical signals into sounds loud enough to be ...^
ElectricDevice146A Device that uses Electricity as its primary power source.^
    ElectricSpeakerDevice4A combination SpeakerDevice and ElectricDevice.^
        Loudspeaker2A SpeakerDevice for projecting sound through the air. A loudspeaker produces louder sound than ea...^
        Earphone.Earphone is a type of Device that that converts electric signals into sound and is usually held...^

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