Tekpower DC Regulated Variable Power Supply, 0-30V & 0-6A, TP3006D Linear Power supply, Continuous voltage adjustment from 0 to 30 volts, current from 0 to 6 amps Coarse/Fine Adjustment for both Voltage and Current 110V/220V seletable Input, you can use it in USA or Europe Back-lit LCD digital display 1 year warranty