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A headset combines a headphone with a microphone. Headsets are made with either a(n) single-earpiece or a(n) double-earpiece (mono to both ears or stereo). Headsets provide the equivalent functionality of a telephone handset but with handsfree operation.
Best Answer: The purpose of the neutral wire in this application is to allow the operation of the electronics inside the switch itself. If you look carefully, there are LEDs on the left side of the switch. This tells you that this is an electronic dimmer that needs a neutral to complete the electrical circuit.