INTERCOM MASTER UNIT WITH TEMPORARY CALL-OUT INVALIDATING FUNCTION

摘要

PROBLEM TO BE SOLVED: To provide an intercom system capable of protecting elderly people with dementia from fraud of a door-to-door seller by temporarily invalidating call-out without performing complicated operation.;SOLUTION: A radio communication unit 110 gives a notice to a main control unit 101 when receiving an acknowledgement from a mobile terminal 3 and stores "present at home" in a mobile terminal information storage unit 111. When the acknowledgement is not received for certain time, "outing" is stored in the mobile terminal information storage unit 111, and thereby when there is call-out from an intercom slave unit 2, ringing of a call-out sound of an intercom master unit 1 is invalidated if there is no one capable of responding and ringing of the call-out sound of the intercom master unit 1 is performed if there are one or more people.;SELECTED DRAWING: Figure 2;COPYRIGHT: (C)2019,JPO&INPIT