LOBBY INTERPHONE FOR MULTIPLE DWELLING HOUSE

摘要

PURPOSE: To provide a lobby interphone for multiple dwelling house in which t e transmission sound volume for interphone talking is performed easily and quickly and the adjustment preformed by a 3rd party or the like is prevented properly. ;CONSTITUTION: The interphone is provided with control signal transmission means 12, 13 sending a control command requesting revision of a transmission sound volume of interphone talking to a house information panel 3 or a warning monitor panel 2. After the transmission of the control command, when a control command commanding increase/decrease in the transmission sound volume is returned from the house information panel 3 or the warning monitor panel 2, a transmission sound volume control means 15 revises the transmission sound volume of interphone talking according to the control command.;COPYRIGHT: (C)1994,JPO&Japio