First LED luminaire with constant luminous flux at an individually selectable colour temperature from 2,500 – 6,500 K – adjustable via bus signal or manually. Producing neither heat nor UV radiation in addition to a standard beam angle choice of 16°/25°/40° it opens up new ways for lighting museums and shops. With power consumption of only 40 W – 75 W the spotlight can operate for 50,000 h without any loss of lighting quality. This means energy savings of 50% by comparison with halogen-lamp technology. TEMPURA owes its impressive product features to the innovative LEXEL technology™.