Link Between A Second Door & Every Phone In The Home!
The Holovision Backdoor Intercom is the "extra" door unit for expansion of the Doorman System. The Doorman creates a communication link between the door and every telephone in the house, and comes standard as a 1 door system, expandable to 2 doors using this extra unit.
Available Finishes: Brushed Anodized Aluminum, Black Textured Powdercoat, Oil Rubbed Bronze Powdercoat
Note: Requires the Holivision Doorman system to operate (sold separately).