J&J Electronics Low Voltage Transformers are packed with features such as a proprietary vibration sound dampening system and electrical line noise filtration technology. These premium transformers are designed specifically to operate modern LED and low voltage swimming pool lighting systems in harsh environments such as high heat, humidity and around chemicals typically found near pools, spas and fountains. They are UL listed for swimming pool lighting applications and come in 2 popular wattage capacity ratings; The TR-150 model is capable of handling up to 150W of electrical load and the TR-300 will handle up to a 300W electrical load. Each model has a 3 different voltage output taps of 12,13 and 14VAC. Color: Beige.