SpeakerCraft's S4VC / S6VC Multi-Room Speaker Selectors with Volume Controls allow the operation of multiple pairs of speakers when using one amplifier or receiver. Once the speakers are connected to the selector, individual pairs may be turned on or off as desired using the push buttons on the front of the selector. A separate volume control for each pair allows the ability to control or limit speaker volume right at the selector. When engaged, the rear protection switch ensures safe operation, even by those unfamiliar with the system. Installation utilizing Direct Connect makes wiring the selector to your speakers quick and easy. With a simple turn of a screw, wires are solidly secured and a perfect electrical bond is created. The process is quick, simple, and eliminates the worry of wires becoming loose.