☆ System efficacy up to 140 lm/W ☆ Extended system service lifetime up to 50,000 hrs (L80/B50) at ambient temperature 35°C ☆ Outstanding colour rendering performance (Ra = 75 / 80 / 85 / 90) ☆ Glare protection,light control with lens ☆ Simple single-point chain-suspended or bracket-ceiling mounted in groups for mains cable connection ☆ Thermal management due to stack effect, rounded upwards housing prevents soiling and the collection of dust ☆ Instant full light on, and instant restart with 100% full luminous flux ☆ Optional with 0-10V dimming and dali dimming ☆ DIN13021 design standard ☆ Housing of finish color : aluminum grey RAL9007/jet black RAL9005