The light sensor will change the output voltage depending on the light intensity. The spectral sensitivity is similar to the human eye, covering the full spectra of visible light, with a peak at 570nm (green/yellow). The change of the voltage according to the light intensity can be set with the three jumpers on the board. Set those jumpers according to printing on the board. The light sensor can be used with the ANALOG IN and the DIGITAL IN of the Field Kit’s Sensor Interface.