... AC 47~63 Hz DC Output 5V 3A Efficiency >80% Output Ripple and Noise <120MV 5V 3A SWITCHING POWER ... is a professional manufacturer of AC DC Adapter, switching power supply,waterproof power supply with 11 years experience, ... safety requirement (UL,RoHS,PSE,GS,CE,FCC,CE,EK,SAA,BS Approved).2. Sample: ... input Current Limiting..............<2.5A(under min AC input and full load)Efficiency..............>80% DC ...