The Model 566-RING is based on the Ring Elite intercom and camera system. It has 2 intercoms, allowing the unit to ring a mobile device as well as a POTS systems - ideal for situations when a family member is traveling and someone at home (housekeeper, child, etc) needs to answer the door. It is designed to take advantage of all the features of the Ring Elite, including a push forward notification to the Ring app on your iOS or Android device. It comes with a variety of keypad options and it is offered in a variety of finishes and can be customized.