The Lionel Vintage Trainmaster Type-KW Transformer is a 190W AC power unit designed for model railroads and trains. Manufactured in the 1950s, this black plastic transformer features an analog control system and is compatible with DCC control systems. With a scale of 1:90 and a voltage of 115V, this vintage Lionel transformer is a ready-to-go unit that allows train enthusiasts to power their O gauge model trains with ease.