Please Note: Products are designed and rated for use in the United States using 120 volt current. With or without a transformer, this product is not recommended for use outside the US. Blacklight comes with UL Listed metal fixture and 18" long blacklight tube. For indoor use only. Plugs into any standard AC outlet. Power Cord is approximately 6.5" long. Can be mounted on the wall. Takes a 15-watt black light tube (type T8). Please Note: Blacklight fixture can only hold 1 blacklight, not 2 lights as pictured on the package image. Please Note: Make sure the blacklight bulb is secured tightly in the holder for the light to operate properly.