To provide an intercom device wherein residents left in the house can go out smoothly without issuing a crime prevention alarm.

When a password number input to a password number input unit 407 is a preset number, a master unit CPU 409 cancels a crime prevention monitoring state temporarily, does not issue a crime prevention alarm from a speaker 401 even if a crime prevention sensor detection unit 406 detects that a crime prevention sensor 30, 31, 32 or 33 is abnormal within a predetermined time, and makes a transition to the crime prevention monitoring state again when a predetermined time elapses after cancellation.