The following strips all included a power supply. There's no need to buy extra. It can be easy plugged and used. Remote Control Waterproof RGB Led Strip 220V smd Lamp Outdoor lights Specification Led type: 220V smd 5050 RGB led strip Output power: Max 15W / m Size: W15mm x H 7mm Emitted Colour: RGB High brightness Great for Home Garden Decoration Protection Rate: Waterproof IP67 Working Temperature: -20 ~ 60 degree Long service life, more than 50,000 hours Cuttable every 100cm Applications: Light up colourful home life, DIY household lights for hallways, stairs, trails, windows Light up colourful life hotels decoration use, Theaters, clubs, shopping malls, festivals and performances What's in the box 1x rgb led strip 1x rgb controller 1x rgb remote (With Introduction)