| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To simply confirm the locking status of a person's own house from a key always carried in his going out. <P>SOLUTION: This key 1 receives a signal showing the unlocking state or the locking state from a door through a terminal 36 of a key part. In a display part 13, in the unlocking state, a red light emitting element 31 is lighted to indicate, and in the locking state, a blue light emitting element 33 is lighted to indicate. The key 1 is informed of the locking or unlocking state of the door confirmed on the door and dwelling house side by radio communication. The key 1 lights the light emitting element according to the locking or unlocking state on receiving the information as described above. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
