The Hi-Fi 2 Volume-Source Control is a 4-button keypad interface in single-gang Decora style. Uses Standard Cat5 Wiring. The four buttons adjust volume (up/down), power, and source. A white OLED display shows the source name, a volume bar chart, bass, treble, balance, and other settings. Routed IR repeater function allows use of source equipment remote controls. The VSC connects with a single Cat5.