... 2. CE,UL,PSE,SAA,GS,CB,C-TICK 3. dimension: 58*25*41mm 4. packing:PE ... ParameterLine Regulationload RegulationCross RegulationV1:4.2V ±5.0% ±5.0% N/A DC Output Current ParameterMin CurrentRate ... 50HzInsulation Resistance...........≥50MΩ ,500VDC Dielectric Strength Testing 100%Hi-pot test ItemSpecificationRemark Primary to Secondary1.5KVac<5mANo ... /A N/A 230V 4.2V 0.5A 500mA AC DC USB Power Adapter