PURPOSE: To improve the switch operability of an electric equipment for domestic use such as an illuminator or an air conditioner without installing any switch on the surface of walls and without executing high-accuracy work to a door by installing a radio operation part, which transmits a driving control signal by radio, on the entrance door to a room.

CONSTITUTION: A radio operation part 16 is installed near a knob 13A of a door 13. On the other hand, a control part 17 is installed at the illuminator hanging part of a ceiling 14. The radio operation part 16 transmits the driving signal for an illuminator 15 such as an ON/OFF signal in this case by the radio of weal radio waves or infrared rays. The control part 17 is connected to the illuminator 15, receives the ON/OFF signal from the radio operation part 16 and controls the state of feeding to the illuminator 15 based on this signal. The radio operation part 16 is just fixed but it is not necessary to execute the high-accuracy work to the door 13. Further, since no wiring is required, the device can be fitted to the plate or frame of the door 13 where wiring is disabled, and this fitting position accuracy can be made low as well.