The Retract-A-Light Low Voltage 6 Light Kit includes everything you need to get started; 6 lights, a controller with transformer, 24 hour timer and compressor, all tubing and wire and wire connectors. These automatic, air-activated fixtures extend from underground and shine beautiful bright light in an 8-foot diameter from each halogen bulb. They then retract back into the ground during the day, safe from damage caused by lawn equipment, vehicles and children playing.