The AK-20 is an action-packed student power supply kit. Once assembled it is not only useful but also visually stunning.It comes with an attractive acrylic clear case and a three digit seven segment voltage readout. Includes a power supply, cord and output leads with alligator clips. Adjustable 2 Watt DC power supply with an output voltage range of 1.25 to 12VDC Input voltage is 115VAC.