The Wireless Light Sensor features two separate apertures: one for ambient light measurements and one for directional light measurements. The ambient sensor measures illuminance and UV Index, while the spot (directional) aperture measures light level and color intensity. Our software displays the relative intensities of Red, Green, and Blue filtered light to a calculated total value of the 3 lights. Our white light sensor is just the unfiltered response from the chip of an unfiltered portion of the detector.  The light available to drive photosynthesis (PAR), total light power per area (irradiance), and relative brightness to the human eye (illuminance) are also available as calculated measurements within PASCO Capstone (version 1.8 or later) and SPARKvue software (version 2.6 or later).