| 摘要 |
<p>The switch (10) has an insert (12) inserted into a building wall, and a rocker switch (22) connected with the insert and accessible from a side of a surface of the wall with the insert. The rocker switch has a CPU and organic LED display consuming electricity during operation. A part (18) of the insert is provided for producing a temporarily variable electromagnetic field (19) in or at the insert, and the rocker switch includes a receiver coil for recovering electric current from the field, by which the energy for operating the CPU and the display is provided.</p> |
