| 摘要 |
PURPOSE: A gate keeper is provided to rapidly notify dangerous situations to outside for safety of an owner. CONSTITUTION: An electronics opening/closing device using a password which is inputted for normal times use and a password which is inputted for emergency use. The electronics opening/closing device is normally operated when the password which is inputted for normal times use is inputted. The electronics opening/closing device is normally operated and a emergency contact function is operated through communication facilities when the password which is inputted for emergency is inputted.
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