... , CB, UL, SGS certificationScopeWireless routers, switches, reading machines, e-books, digital photo frame, electronic tools, high-definition player, electric toys, advertising ... )Output ripple and noise100mVp-pInsulation ResistanceDC500V 100M Ω(min)MTBF>20000Hrs USB 5W Power adapter UL SFN050100-US