The Ambient 4 Click Board™ is a light intensity-sensing and measuring Click Board™, which features an accurate, light-intensity sensor labelled as BH1721FVC, made by ROHM Corporation. It offers a high measurement accuracy in the range between 1x to 1.35x of the actual light intensity. The spectral response of the sensor is calibrated to closely match the spectral response of the human eye. Thanks to its high level of integration, the sensor requires a minimal number of external components, allowing the Click Board™ to incorporate an additional level translating IC, ensuring a reliable data transfer over the industry-standard I2C interface.