☆ System efficacy up to 120 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) ☆ Stable colour constancy,  Consistent light output ☆ Instant full light on, and instant restart with 100% full luminous flux ☆ Optional with 0-10V dimming and dali dimming ☆ Housing of finish color: aluminum grey (RAL9007)