... and high reliability 2,High efficiency 3,High power factor 4,CE,ROHS Specification:1, Input voltage: 100-240Vac2, Input current ... loss: 0.3W5, Output voltage: 18-21V6, Output current: 300mA7, Output power: 6W8, Efficiency:79%9, Ripple voltage: 1V10, ... Operating Temperature: -20~+50°C11, Size: 67*25*21MM 6W LED constant current driving power supply ...