Vista Professional Outdoor Lighting HP-300T Stainless Steel HP Transformer with Mechanical 24-hour Timer 300W. Our next generation of transformers includes many new features while maintaining the quality and reliability that Vista is known for. Some of the features include an extra-large terminal strip for multiple low voltage cable connections and a 120-volt terminal strip for easy hardwiring. A custom-designed, weathertight, clear-coated, stainless steel casing seals components from moisture and debris. Take-apart stainless steel hinges allow for easy door removal and greater access during installation. All Vista Transformers come with a lifetime warranty.