| 摘要 |
<p>The Christmas tree light has an electric light source (1) which is operated independent of the electrical mains network via an electrochemical cell or battery (3), with a remote-controlled on-off switch (4) and an associated remote-control receiver (5) between the energy source and the electric light source, all remote-control receivers using the same remote-control frequency for simultaneous on-off switching of a number of Christmas tree lights.</p> |
