To enable the automatic rotation of the control of lighting load at the same illuminance pattern with one switch operation by computing the lighting load control condition corresponding to plural switches to be controlled with pattern.

When switches of a remote control switch 1 to be controlled with the same illuminance pattern are operated, computing signal is input from a relay unit 7 with terminal unit to an input unit of a sequencer 8. The sequencer 8 stores the input while adding 1 to the last count value (m), and turns the corresponding output unit address on, and outputs the control signal to a contact point input terminal 6. In canceling the input unit signal, the sequencer 8 discriminates the stored count value, and resets the count value when it achieves the set value (n). The set value (n) can be set in response to the number of the same illuminance pattern. When the input unit signal is canceled, the sequencer 8 is switched to the waiting condition till a following computing signal is input. Automatic rotation of plural illuminance patters can be performed with this computing.