Modern stable lighting in livestock production has special demands: high humidity and frequently high levels of dust and ammonia provide challenging conditions for lighting. Furthermore, stables for cattle, sheep, goats, swine and horses should have optimum quality of light that provides a pleasant color temperature for animals1. The lighting specialist Osram has now developed a solution that meets the complete range of requirements for modern stable lighting in the form of the Monsun 2 LED luminaire with a cover made from the thermoplastic resin polymethylmethacrylate (PMMA). The ammonia-resistant damp-proof luminaire with special PMMA cover is not only an innovative solution for the special ambient conditions existing in livestock stables, but is also an economic decision for managers aiming at maximum energy efficiency.