☆ System efficacy up to 130 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 ☆ Optional with 0-10V dimming and dali dimming ☆ DIN13021 design standard ☆ Ceiling-surface mounted and ceiling-embedded mounted avaliable ☆ Photocell or sensor function workable ☆ Housing of finish color: traffic white RAL9016 or silver grey RAL7001