... 3, High reliability, low ripple & noise 4, CE,GS,RoHS,ErP,CB 1, Features 12v ac dc power supply CEC & Energy Star complianceSingle Output1 Year warranty ... Cooling: By natural airIndoor use6, Safety and EMC:Certification: CCC, CE, GS UL;Regulation: EN60950-1Dielectric Strength: Primary to Secondary 3000Vac, 5mA. ... 2A20W15V 1.33A 20W16V 1.25A 20W12V 2A24W24V 1A24W 12v ac dc power supply for telecom use