ON-Q Adorne Intercom Adorne Interior Intercom Unit Magnesium (AI6000M1) The video doorbell camera transmits images from the front door to every Intercom unit throughout the home, and each interior unit can communicate with other interior units via Audio. Includes a power cable and must be plugged into an existing outlet. It can be surface-mounted to the wall, or placed on a tabletop through use of the integrated easel back. System limit is three interior Intercom units per system.