... , extremely clean ripple and noise, comprehensive over-voltage over-current over-temperature protection, user friendly interface ... the interferencel Outstanding line regulation rate:≤0.01%+2mV(voltage),≤0.01%+1mA(current)l low ripples noise:< ... 300uVrms/2mVppl Four operating mode : independent , parallel connection , series connection ,plus-minus;l Over-voltage ...