This is a buy it now for a tested and fully functional Whelen 2X6, 6 outlet strobe power supply for the Whelen Edge 9000 series of lightbars. These are great condition power supplies in perfect working order. We test them all before they are listed and they are retested for at least 1 hour before they ship to insure you are receiving a supply in perfect working order! Any questions you might have, feel free!