Electric Optics Middy EL Wire Inverter is a great mid-sized inverter. It takes up very little space, and provides enough power for many applications including costumes, signs and more. This 12V DC inverter powers from 10-16.25 Feet of Electric Optics EL Wire and can be used when you have a 12 Volt source already, such as a car battery, or a 2 Prong Wall Unit. Unit will come with a Male Connection, ready to attach an Easy Female Connector to. The female connector is commonly soldered on the ends of EL Wire. Also included is an exposed positive and negative lead wire, which will hook up to your power source. This unit does NOT come with its own power source.