The Atmosphere C-ZSV controller is an intuitive wall controller for total control of an Atmosphere system. The C-ZSV enables control of multiple zones and groups for source selection and volume adjustments, as well as more advanced capabilities such as scenes recall, messages recall, routine recall, GPO control, and bell schedules. Zone control and other capabilities are completely customizable through a simple opt-in structure within the AZM user interface. Each Atmosphere accessory is a plug-and-play, intelligent device, specifically designed to be approachable and intuitive. The Atmosphere accessory bus allows for up to 8 devices to be connected to a single accessory port, reliably sending audio and data over 1000ft per port.