An illumination controller includes a communication interface circuit configured to communicate with a luminaire via radio waves; an input device configured to obtain a manipulation instruction; and a control processor configured to generate at least a first command and a second command according to a corresponding manipulation instruction obtaining state of the input device, and transmit the command generated to the luminaire via the communication interface circuit, wherein, when the control processor has generated the first command according to the manipulation instruction obtaining state, the control processor is configured to repeatedly transmit the first command, generated to the luminaire at first transmission intervals, and when the control processor has generated the second command according to the manipulation instruction obtaining state, the control processor is configured to repeatedly transmit the second command generated to the luminaire at second transmission intervals different from the first transmission intervals.