... Switching Power supply AC into DC 4. 2Year Warranty S-25 Series Single Output Switchin Power SupplyAC input voltage range ... RangeOutput Voltage ToleranceRipple & NoiseEffciencyS-25-55V, 0~5.0A25W +10, -5%±2%50mV72%S-25-1212V, 0-2.1A25.2W ... ±10%±1%100mV76%S-25-1515V, 0~1.7A25.5W± ... 10%±1%100mV77%S-25-2424V, 0~1.1A26.4W ...