Check the listing for details. TekTone Apartment Speaker Station, 4 Wire (IR204E). Color: N/A, Condition: New. Listed at 28.04 USD. Clearly hear visitors at your apartment complex's front door with the TekTone Apartment Station, 4 Wire. These voice intercom stations connect to TekTone Entrance or Vandal Panels to enable clear voice communication and door-release operation. The apartment station features three momentary action push buttons — Talk, Listen, and Door Release — that activate when the buttons are held down. Each button is labeled by English text, international symbols, and Braille for near universal understanding and easy operation.Push-and-hold button operated voice intercomsClear voice qualityEasy to flush mountInstallation Details The Apartment Station flush mounts into a wall with a IH103 mounting plate, or IH101 box (both sold separately). The Apartment Station faceplate is made of flame-retardant ABS plastic and blends well with any setting. NOTE: Requires a AM492xx series Entrance Panel, a PK543A Amplifier, and SS102A Transformer for operation (all sold separately).Technical DetailsManufacturer Part #: IR204EUPC: 812664020030Type: Surface MountFinish: Flame-retardant ABS plasticControls: Individually replaceable push buttons with self-wiping contacts. Identified for talk, listen and door functionsSpeaker/Mic: 2.5 inches (89 mm) with voice response. Also used for electronic tone signal.Connection: Screw terminalsHousings: IH103 mounting plate or IH101 boxDimensions: (H) 6.875 x (W) 5 x (D) 1.25 inches (175 x 127 x 32mm)