Patent ID: 8669708

Claim:
An illuminance sensor setting device comprising: an illuminance sensor which detects the illuminance value of ambient illuminance and outputs a signal to control a lighting apparatus so as to light up or extinguish the lighting apparatus in accordance with the detected illuminance value; and a setter configured to perform operation settings of the illuminance sensor, wherein the illuminance sensor and the setter are provided separately from each other, and connected to a transmission signal line in a lighting control system, the setter is configured to set an illuminance sensor address of the illuminance sensor, a control address of the lighting apparatus, and an operation illuminance, the illuminance sensor address, set through the setter, is shared by the illuminance sensor and the setter, when the settings have been performed, the setter is configured to transmit, to the transmission signal line, a setting signal indicating the settings, together with an information signal indicating the illuminance sensor address, and the illuminance sensor, when the illuminance value detected by the sensor has reached the operation illuminance, is configured to transmit, to the transmission signal line, an information signal indicating the control address, and a control signal for lighting up or extinguishing the lighting apparatus.