Moving toward more environment-friendly processes to perform specific organic transformations is more necessary than ever. Inspired by Nature that uses light as inducer with photosystem II (PSII), a new Ru-based dyad combining a photosensitizer with a catalytic partner was developed. Upon irradiation with low power consumption blue LEDs, this system proved its effectiveness during the catalytic oxidation of various sulfides and alcohols with water as unique oxygen atom source.