| http://www.w3.org/ns/prov#value | - The dimmer output voltage oscillates during each period from a positive voltage to a negative voltage. (The positive and negative voltages are characterized with respect to a reference direct current (dc) voltage level, such as a neutral or common voltage reference.) The period of each full cycle 202.0 through 202.N is the same frequency as Vline, where N is an integer.
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