Mastech Dual DC Regulated Power Supply 0-50 V @ 0-5a Two level of control for both current and voltage outputs: coarse and fine for ease of use Dual adjustable outputs: 0-50V and 0-5A Ripple noise: CV &lt;= 0.5 mV RMS, CC &lt;= 3 mA RMS Input voltage: 110V AC and 220V AC switchable Warranty: 1 year