Theater Solutions OVCDG Outdoor Speaker Volume Control Gray Weatherproof Dial Switch Theater Solutions OVCDG impedance matching dial gray outdoor volume control, use up to 8 pairs of speakers, 150 watts RMS per channel, use up to 14 gauge wire Use with 4ohm, 8ohm, and 16ohm speakers, impedance matching, use any amp with the independent ground, unit dimensions are 2.75" x 4.5" x 2.75" PVC weatherproof housing, 1" diameter mount, full instructions included Use for in wall or in ceiling home entertainment, home theater, multiple room system, industrial sound system, marine audio, pools, spas, yards, decks This listing and price is for 1 volume control and full instructions