... No UV & IR radiationOperating TemperatureAbout -20 to +40 Degree CelsiusStorage TemperatureAbout -30 to +65 Degree CelsiusColor temperatureWW: 2700-3500K NW: 4000-4500K ... EPISTAR, SAMSUNG 2, High Flux, CRI>80, UL pl lamp in coincident with LM79 and LM80 (energy star standard) 3 ... IC-ST, Semiconductor-Fairchild. 5, Stepless dimmable, applicable with most SCR dimmers, pl g24 g23 spotlight no flicker. ...