These DC power supplies were manufactured for HDAmodelworx with longer than normal power cables. 12v/2Amp with a combined power cord length greater than 5 feet power cable. Regulated supply. We have chosen to make both of our power supplies a little larger in amps than what is needed for most model projects. A 1.5 amp supply is more than ample, but when building a large model with a lot of lighting effects a 2 amp supply will provide just a little more growth room for the most demanding modeling project.