... No strobing during working, fast response (no delay) , no damage with frequency switching and energy saving 90% than conventional down lights ... frequency.It is not only safe , but also small measurement with high efficiency and high power factor .Long lifespan: Toppo introduce ... 30000.8%40001.4%50002.2%60003.1%3,Application area Available for City,Buildings,Plaza,Hotel,Offices.,etc 3-8 inch (5-20W) LED ...