... Power Supply 1.*(30V,1mA to 3 A), linear power supply,30V,3A 2.*Low Ripple and Noise 3.*Ideal for Education and PS ... Channel: Fixed 5V OutputSecond Channel: 0.00V to 31.9VOutput VoltageFrom 0.00V to 31.9V adjustableOutput CurrentFrom 0.00A to 3.00A adjustableCurrent changeThere ... press, if you want a little current from 1m A to 999m A, press down the button and adjust it.RippleCV ...