MULTIPLE DWELLING HOUSE INTERCOM SYSTEM

PROBLEM TO BE SOLVED: To provide a wireless key system which allows a resident to unlock an entrance lock without taking out a key, and which allows only specified persons for the multiple dwelling house to unlock an electric lock.SOLUTION: In a multiple dwelling house intercom system comprising an ID terminal for opening the entrance door, a multiple dwelling entrance machine is provided with: an ID terminal reading unit which reads information of the ID terminal by radio when calling operation is performed; a first storage unit which stores the room number of a room master unit associated with the information of the ID terminal; a room number ID comparison unit which compares a called room number input when call operation is performed by a calling unit and read ID information read by the ID terminal reading unit with a called room number and read ID information stored in the first storage unit; and a door opening control unit which controls opening of the entrance door when the room number ID comparison unit determines matching.