Waterproof diffuser luminaires are designed for demanding applications in damp or dusty environments. Robustness, ease of installation and quality are particularly in demand here. They usually have an elongated shape and are characterized by an increased degree of protection. In the past, bath lights were mainly operated with fluorescent tubes, whereas today most models are combined with LED tubes. These have a significantly longer service life and save up to 90% of the electricity costs compared to conventional tubes. LED damp-proof diffuser luminaires are an energy-efficient, low-maintenance and long-lasting lighting solution for a wide range of applications.