The HO Marklin Digital 6017 Booster is a track control unit designed for model railroads and trains. Made of metal and plastic, this pre-built unit operates on AC power and features digital control system technology. Originating from Germany, this 1:87 scale booster is compatible with HO gauge model railroads and weighs 1 lb. 8.3 oz. Perfect for controlling and enhancing the performance of your model railroad layout, this Marklin booster is sure to enhance your train experience.