The breakthrough of LED technology currently being experienced in architectural lighting is probably the biggest development in lighting technology for decades. ERCO plays a leading role in implementing these advances with practical LED lighting tools. The new technology takes the possibilities for realising efficient visual comfort to a previously unattainable level. With our "tune the light" approach, we develop innovative products and methods for producing, directing and controlling light, enabling designers and users alike to optimally exploit the advantages of LEDs. The aim of this brochure is to explain this specific approach and to help to shape a safe and inspirational transition into a new age of architectural lighting.