Interphone unit with television
专利汇可以提供Interphone unit with television专利检索，专利查询，专利分析的服务。并且PURPOSE:To make it possible to confirm a visitor and decide immediately whether rejection is required or not, by connecting the visitor and the receiver in the room by an interphone and projecting the video of the visitor to the screen. CONSTITUTION:Master equipment 1 is installed in the living room and so on, and slave equipment 6 of the interphone and TV camera unit 10 are installed on the outside door or gatepost, and electronic lock unit 5 is mounted on the door or the gate. When the visitor depresses switch 11 is front of camera unit 10, the bell of master equipment 1 sounds, and simultaneously, the visitor is projected onto screen 2 of master equipment 1 by the operation of TV camera 9. The visitor is confirmed by screen 2 in the room. If service is required after confirmation of the visitor, handset 3 is removed from master equipment 1 to perform service to the visitor. If the visitor is permitted to enter into the room, lock unit 5 can be released by depressing the push button installed in master equipment 1, and visitor can enter into the room.，下面是Interphone unit with television专利的具体信息内容。
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