The Intrasonic RETRO-VC Volume Control is compatible with the Intrasonic RETRO Intercom System. It allows you to select different sources to play music through separate from other stations in the house (AM, FM, AUX input) and is used to control music and voice volume through ceiling and wall speakers.
The RETRO-VC mounts in a single-gang J-box (not included) and requires decora style trim plate (not included).