1,Low price and high reliability 2,High efficiency 3,High power factor 4,CE,ROHS Specification:1, Input voltage: 100-240Vac2, ... : 0.12A Max.3, Power factor: ≥0.904, Static loss: 0.3W5, Output voltage: 18-21V6, Output current: 300mA7, Output power: 6W8, Efficiency:79%9 ... °C11, Size: 67*25*21MM 6W LED constant current driving power supply(indoor use)