Strip is delivered without power supply. (But is also expressly stated in the article description) If you have lying around a 12 V power supply somewhere, there is the not a problem. The controller also offers a lot of functions and the whole thing makes a very atmospheric light. A star's deduction for the fact that the controller apparently regularly "hang up" and then nothing more lights. But if you pull the power supply and reconnected it's back. But I find this one at this price so can live quite well.