... 90% energy 4.can get free samples 5.display showcase can replace 30W Name display showcase Power consumption 2W, Input Voltage AC12V ... lumen loss and better illuminating effect.5Stable and Efficient LED Driver(Efficiency>=85%),with PFC solution(PF>0.92).6Dust-proof ... enviroment. Applications: Offices,factories,shouping mall,school,airports,metrohousehold,,etcWarranty display showcase