The decorative LED Light Rails are 12 volt dc and come with a cigarette lighter power connection (with switch). They come in White, Blue and RGB color change. To mount the LED Light Rails use the two sided adhesive tape to mount it directly to an object or the included, plastic mounting brackets to hook them where you need the Decorative Interior LED Light Rails. One pair comes to a pack that’s two rails connected to a cigarette lighter power adaptor. Great for lighting the floor panel’s, car doors, trunks and the glove box.