The TYCO PAK 1 HO Train Transformer is a ready-to-go control unit that provides 6VA of power, with the ability to output both 18 VDC and 20 VAC. Specifically designed for model railroads with a 1:87 scale, this transformer operates on 120V AC power and is made in the United States. Perfect for enthusiasts looking to power their HO gauge train layouts, this TYCO transformer offers reliable performance and efficient power conversion.