Power Supply 1-12 V Ac/Dc. A simple, robust and reliable power supply, ideal for basic electricity experiments. Output voltage is selected by way of control knob. Output is protected by thermal cut-out. Weight: 2.8 kg. Dimensions (L W H): 185 225 118mm.DC Output:• 1-12 in V steps• A max AC Output:• 1-12 in V steps• A max