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IST RETRO Doorbell Adapter


Order now and we'll ship same business day (if ordered before 3 pm PST).


WARNING: Cancer and Reproductive Harm –


Add a 2-Wire Doorbell Button to Your IST RETRO System

The IST RETRO Doorbell Adapter is an add-on control board for the IST RETRO Intercom System that allows you to connect your existing 2-wire doorbell button to the system, instead of the standard 4-wire button. When the doorbell button is pressed, your IST RETRO room stations will chime.

  • Connects a 2-wire doorbell button to the Master Station
  • Triggers room stations to chime when button is pressed
  • Wires into the door speaker input on the Master Station

The control board installs behind your IST RETRO Master Station. The doorbell's two wires connect to the board and the board's 3-wire adapter cord connects to the master station's door station input.

IST Takes You Inside Your Sound

Since 2005, IntraSonic Technology (IST) has been enriching the residential audio experience by manufacturing robust yet easy-to-use home audio systems. The IST product line offers a premium home audio selection, including music distribution systems, video door intercom systems, and associated accessories. Envelop yourself "inside your sound" with IntraSonic Technology.


  • Manufacturer Part #: RETRO-DBB
  • Warranty: 2 Years