An argon-dye laser system for the clinical application of photodynamic therapy and photodynamic diagnosis is presented. Two out-patient treatment rooms and three operating theaters are served by an argon-dye laser system which can be accessed by remote-control from each treatment room. The argon-dye laser offers a wide range of light wavelengths with sufficient energy for all kinds of photosensitizers and fluorescent substances. This report presents our experiences with the first remote-controlled laser configuration which is being used routinely in clinical practice for photodynamic therapy and photodynamic diagnosis.