The MTH Rail King Z-1000 100 Watt Hobby Transformer Power Pack & Controller 40-1000 is a ready-to-go pre-built black transformer with a scale of 1:48 and a wattage of 100W. It features an analog control system and operates on AC power at 120V. Designed for model railroads in O gauge, this transformer is suitable for hobbyists aged 14 years and up. Made by brand MTH in China, this transformer is essential for powering and controlling model train layouts.

Good working condition.   Controller is like new.  Please see photos as they are part of the description.   Thanks.