This product is an electric volume control knob that can be mounted on the wall or ceiling. It is designed to match the impedance of your speaker system and has a maximum output power of 100 watts. The unit comes with white and ivory plates, installation accessories, and possibly other components. It is recommended for use in home audio systems and has X-10 connectivity technology. The product dimensions are 2.76 x 3.7 x 4.49 inches and it weighs 1.3 pounds.