| 摘要 |
In a first system in which the present invention is used, one or more electric power relay devices are used to supply electric power to electric devices. The electric power relay device has: one or more output ports for supplying electric power to a downstream side; a communication means in each output port for communicating with the downstream side to which the output port is connected; and a control means that is able to use the communication means to request the operation of an electric-power-saving function of a first electric device provided with an electric-power saving function among electric devices positioned on the downstream side of the output port. |
