| 摘要 |
This invention provides a system for controlling electrical appliances. The system comprises:
a marshalling device which comprises an input port connectable to at least one output port and to at least one connection port; and
an extension device which comprises at least one output port and a connection port,
wherein, in use, the extension device is connected to the marshalling device through the connection ports such that the output port of the extension device is connectable to the input port of the marshalling device. |
