| 摘要 |
PURPOSE: A security interphone device and a method thereof are provided to previously block accidental crime or premeditated crime by supplying voice of a home owner to a visitor through a security interphone device. CONSTITUTION: A chime bell informs a call of a visitor to the inside through an alarm signal. An internal call device(300) transmits and receives a voice signal from an external call device(100). A recording device(400) transmits the voice signal to the external call device in order to output the voice which is selected by a user to the external call device. |
