| 摘要 |
PURPOSE:To improve a fine sight, to eliminate the fear of a line disconnection failure and to improve a safety by providing a terminal part for connecting an extension and a line wire and a terminal part for connecting a low tension power line at both the ends of the rear part of a device main body and separating both the parts by the insulating separator of an existing switch box. CONSTITUTION:On the rear part of one side of the main device, the terminal part 32a for connecting the small activity line such as the line wire, the extension, a speech line is exposed. On the rear part of the other side, the device main body 33 on which the low voltage side terminal part 32b for connecting the low tension power line or the like and an attaching frame 35 for fixing the main body 33 by a screw by fitting a central protrusion 33a into an opening window from a rear part are formed. The frame 35 has a dimension which can be stored in the existing switch box 36. The insulating separator 39 protruding from the bottom part of the switch box 36 is fitted into a fitting groove 40 to prevent the low tension power line 41 from contacting the small activity line 42. Since a wiring is not exposed, the fine sight can be obtained. |
