| 摘要 |
The present invention provides a security system capable of operating a switch by using a call line of a front door camera. The system includes: a camera phone (100) which generates a unique voltage for each key in response to a key input when the key input is made through a key matrix unit (132) while receiving a call signal and an image/audio signal; a switch (200) for electrically opening and closing the door; and a household terminal (300) which applies power to the camera phone (100) when the call signal is input from the camera phone (100), detects the data of the unique voltage of each key generated by a key matrix unit (132) of the camera phone (100), and controls the switch power applied to the switch (200) depending on whether the detected data matches the data stored in a memory. |
