MASTECH VARIABLE REGULATED DC POWER SUPPLY 0-30V 0-30A Two level of control for both current and voltage outputs: coarse and fine for ease of use Outputs: Adjustable at 0-30 V and 0-30 A Input voltage: 110V AC and 220V AC switchable Ripple noise: CV &lt;= 10 mV RMS, CC &lt;= 10 mA RMS Warranty: 1 year.