... /60HzLight Source:Samsung smd ledsQuantity of LED:60pcsWattage:30WLuminous Flux:1900LMProduct Dimension:¢460xH115mmPF:>0.92Materials:Copper PCB , Aluminum base , PMMA coverConversion Efficiency ... : Household, hotel, restaurant, school, hospital, museum, walkway etc. Surface Mounted LED Oyster Light with Motion Sensor & Dimming Function