NuTone IS-400 Series Intercom
Indoor Room Station - Vintage Speaker Unit.
These units allowed for room-to-room communication, door monitoring, and sometimes radio playback when connected to a master console. Controls: The panel features a volume knob and buttons for "Inside/Patio Talk," "Door Talk," and "End Call".8.25" x 6.25" X 1".Pre-owned. Clean . Plate And Screws Included.