| 摘要 |
PURPOSE:To prevent an indoor optional operation by the third party by connecting a carrier wave stopping filter between a control module connected to a commercial power line, and outdoor plug socket, and connecting a load to the outdoor plug socket. CONSTITUTION:When a control request for controlling a specified load has been generated in a control terminal, the control terminal 15 transmits a signal which has been constituted of a carrier wave for showing a control module to which its load is connected, and the control contents, onto a commercial power line 8. The control module which has received this signal through the commercial power line 8 controls the load which has been connected to itself, transmits a signal which has been constituted of a carrier wave of the contents for showing a load state of after the control, to the control terminal 15 through the commercial power line 8. The control terminal 15 which has received this signal displays its fact on a monitor. The control module 10 is connected directly to the commercial line 8, therefore, a load 14 which is connected to an outside plug socket 13 can be controlled freely from the indoor control terminal 15. |
