Broan ISA445WH 6-5/16 x 8-1/4 x 1-7/16 Inch Bright White Indoor Speaker with Control

Interior speaker use up to 9 remote stations and 3 door speakers. Talk from any stations and 'Master', answer without pressing any buttons. Answer door from any station or 'Master'. Control radio and CD player from remote stations; turn on/off, select radio memory channels, CD tracks. Control music and intercom volume using built-in control.