... maintaince 3.IP 65 4.long life Induction Explosion-proof Light RY403 100wOperation Voltage: 220-240V 50HzColor of Housing ... Ra)4. High lumen efficiency: 80Lm/W, constant light flux, lumen maintenance rate after 2000 hours>95% ... of requirements7. No flick, no glare: comfortable light for eyesight protection8. Mercury content is less than ... , please feel free to contact.Best Regards, MS Marilyn Yao