For the renovation of the 20 metre high production hall, the lighting needed to be fully converted to LED. At the same time, there was a requirement for constant and uniform lighting throughout. The high degree of modularity of the Ralite Highbay II range of spotlights allows the lighting intensity to be programmed according to requirements. The driver is also used to programme the constant light output (CLO) of each luminaire so that its reduction in luminous flux is automatically compensated for throughout its entire service life. This guarantees not only a consistent level of lighting but also safety and productivity.