| 摘要 |
A door having a security system is provided. A latching groove (3), which is used as a coil, and a latch (4), which is used as a magnet, are formed in the door. When a door knob is rotated to open the door, the latch is separated from the latching groove, and currents are generated. The generated currents are transferred to a security system through a wire (2). Thereby, the present invention prevents the waste of power by allowing an electromagnet to penetrate the coil on the inner side of the door when the door is opened. |
