These central vacuum hoses have a two-way switch that turns on/off the vacuum system in one direction, and the vacuum system AND an electric power nozzle / power brush in the other direction. Narrow your search by choosing 1) those hoses with an attached power cord for standard 110V household outlets (pigtail cord) or 2) hoses that have conductive metal prongs to get their power from the vacuum inlet (direct connect for 110V powered valve inlets).
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