| 摘要 |
<p>A plug is provided with plug terminals (12a, 12b) to be inserted in a receptacle for electric power supply, a body (10) having a surface from which the plug terminals (12a, 12b) protrude, a light emitting element (20) for outputting warning, and an operating section protruding from the body (10). Lighting of the light emitting element (20) is controlled according to operating conditions of the operating section.</p> |
