... 3. UL, ETS/EMC/CE 300w 85~264V 12v ac dc power supply with CE Rohs UL ETS EMC1 ... . Specification of UN300W-S-12:DC output: 12V 25A load regulation: 0.5%ripple&noise: 120mV ... efficiency(Typ.): 83% AC input voltage range 85~264VAC selected by switchinput frequency ... 2,3,4,5,6,8,11Cooling method convectionUniversal AC input/full rangeProtection: overload/ over voltage/ short ...