| 摘要 |
PURPOSE:To attain control of the desired load through plural placed having transmission terminals by superposing a high frequency signal modulated by the control signal on a power line. CONSTITUTION:Plural plug sockets switches 2 and a plug socket adaptor 1 are connected to a power line 6 via an attachment plug 7. The connection/ disconnection is carried out between the line 6 and a load 5 connected to the adaptor 1 with push of a switch 4, for example, among those switches 2 or a switch 3 provided to the main body of the adaptor 1. The state of the load 5 is inverted with push of the switch 3 or 4. The power line transport communication is performed for load control and therefore no exclusive wiring nor its incidental construction are required. Thus a control switch can be set at any place as long as the line 6 is provided there. This attains the control of a single load through plural placed.
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