Nutone IS518 8" Interior Speaker BRIGHT WHITE • "Selective call" intercom, allows calls to be made between two selected stations • "All call" intercom calls all stations at the same time • "Hands-free" answering at all stations • One button talk/listen: Push to speak, release to hear reply • Audible signal announces someone is calling • Answer door from any intercom station, response is hands-free • "Listen-in" monitoring for baby's room, keep tabs a on person confined to a bed • Private mode prevents unwanted intercom calls • Separate electronic touch volume controls for intercom and program volume • Use IR-80 rough-in -Measures 10-1/8" x 11-1/2" x 2-1/8" in-wall depth, 13-17" projection PLEASE NOTE THE SHIPPING AND RETURN POLICIES NEAR THE BOTTOM OF OUR HOME PAGE.