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DoorBell Fon Inbound Trigger Relay


Usually ships in 3-5 days.


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


Activates External Device When Door Station Button Is Pressed

The DoorBell Fon Inbound Trigger Relay is an add-on module for the Doorbell Fon System. When a visitor presses the button on a Door Station, the relay allows your doorbell to chime or another external device to be triggered at the same time your phone rings.

The Inbound Trigger Relay provides a dry-closure when the Door Station button is pushed for 800ms (8/10ths of a second). It mounts into a wall or structured wiring enclosure. The unit can be powered by internal AA batteries or by an external 3.5V to 5V DC power supply.

Note: This module does not provide power to external devices. It connects an external power source through the dry-closure on the module, which can connect to the external device.

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: 5.8125 x 2 x 0.875 inches
    • Module with Dust Cover: 6 x 2.188 x 1.75 inches
    • Base with Butterfly Clips: 6.875 x 2 inches
  • Power: 1A at 30VDC, 0.5A at 125VAC, 0.3A at 60VD


  • Doorbells and melodic chimes
  • Cameras and camera switchers
  • Exterior lights
  • Strobe lights (for the hearing impaired)