The PL-LED160L optional wavelength LED light source is designed for photocatalytic applications. The internal installation of high-energy lamp beads in the light source emits strong and stable monochromatic light waves when ignited, with high energy density and stable output. It is an ideal light source to replace traditional gas discharge light sources for extracting monochromatic light. It has been widely used in research fields such as photoaging testing, photocatalysis, industrial catalysis, photocatalytic hydrogen production, photochemical synthesis, photodegradation of pollutants, water pollution treatment, biological illumination, vitamin synthesis, optical detection, various monochromatic light acceleration experiments, deep ultraviolet band acceleration experiments, etc.