| 摘要 |
PURPOSE:To control plural electrical apparatus by one timer without providing special wiring by controlling a control module which controls each apparatus by a timer control means which inputs operation time and operation information of plural apparatus, and a control signal generator. CONSTITUTION:Among electrical apparatus 25, 26, 27 and 28, the electrical apparatus 25 where you want to control, time and the control operation are set by a timer control means 29. A control signal outgoing device 24 transmits the control signa whose frequency is higher than power source frequency (50/60Hz) satisfactorily to all control modules 20, 21, 22 and 23 through a lighting line 19 when the set time comes. The above-mentioned control modules 20, 21, 22 and 23 which receive the control signal, control turning on/off for the above-mentioned electrical apparatus 25 in accordance with the operation information which is set by decoding the received signal. Even if plural electrical apparatus are connected to the lighting line through the control modules in the above-mentioned operation, the controlled apparatus by the kinds of the overlapping control signal on the lighting line can be changed freely. |
