The Trex 30W Transformer is a high-tech power supply designed to provide years of power to your outdoor lighting projects. The lighting transformer comes withone cable, which can be attached to a splitter or adapter without the need for wire nuts, and a photo-activated timer with several options for customizing the run-time of your light system. The 30W Trex Transformer is designed specifically for outdoor use, withstanding years of tough weather including rain, wind and hail.