This listing is for a Harrison Labs Power Supply, range 0-40 volts, 0 - 0.5 AMPS, Model 865B. It is used but seems to work well. It needs a bit of a cleanup, but would look excellent when done....as shown in pictures. Please be sure it is what you are looking for, as returns aren't accepted. Pls ask any question. PayPal only. Thank you. PRICE REDUCED 11/28 !! AGAIN 2/12 !!