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DoorBell Fon Telephone Keypad Relay Trigger


Usually ships in 3-5 days.


WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov


Add-On Module For The Doorbell Fon System

Used exclusicely with the Doorbell Fon Controller (ACDP28C), the DoorBell Fon Telephone Keypad Relay Trigger can be set to perform one of two possible functions. It can be used an an Intercom Module to convert all landline phones into an intercom system. Alternatively, the relay can be used as an Outbound Relay Trigger Controller, allowing you to trigger an external device by pressing a button on your telephone keypad.

  • Intercom Module: Enhances the existing DoorBell Fon system by converting all the phones in your home or office into an intercom system. No new wiring or programming is required.
  • Outbound Relay Trigger Controller: Provides dry contact closure via the star (*) or other selected keys on the telephone keypad by using dip switch S1. Triggers the operation of electrical devices, such as an electric door strike.

The Telephone Keypad Relay Trigger functions as an Intercom Module if JP5 AND JP6 are set to "OFF". It works as an Outbound Relay Trigger Controller if JP5 AND JP6 are set to "ON".

Note: ACDP29SWIM is only compatible with the ACDP28C. Both functions cannot be used at once. Unit must be used as either an Intercom Module OR an Outbound Relay Trigger Controller. Requires connection to the Door Fon Main Controller, sold separately.

DoorBell Fon: Your Door-To-Phone Intercom Solution

Tired of walking all the way across your home or office just to answer the door? Wouldn’t it be easier to simply answer the door – from your phone? The DoorBell Fon Door Intercom Station is just what you’re looking for! The DoorBell Fon will bring Simplicity, Safety, and Convenience to your home.

Simplicity: The DoorBell Fon is simple to install. All you need is two wires from the Door Intercom connecting to the Main Controller and your phone line to pass through this Main Controller. That’s it! No programming and no codes to worry about. Don’t want to run new wires from your door? No problem! Just use your existing doorbell wires to connect to the Main Controller.

Safety: With the DoorBell Fon, you get the intrinsic safety feature of a door intercom system. You’re notified that someone is present and can communicate without physically being at the door. If you add a 3rd party camera hidden behind our discrete camera slot, you can see who is there as well. With our Door Strike Controller and a door strike, you can even open the door from your phone.

Convenience: With the DoorBell Fon, you have the convenience of answering and opening the door from any room with a phone. No more leaving the comfort of your couch to answer the door. No more hurrying to get dressed when the doorbell rings. No more rushing out of the bathroom when someone is at the door. You don’t have to drop what you’re doing just to let someone in your home!


  • Dimensions:
    • Module Only: 5.75 x 2 x 0.875 inch
    • Module with Dust Cover: 6 x 2.188 x 1.75 inches
    • Base with Butterfly Clips: 6.875 x 2 inche