This AHM Power Pack is a pre-built item that is ready to use right out of the box. It is made of pressed steel and steel materials and has a yellow color finish. This model railroad transformer has a wattage of 100-200 W and operates on 111-120 V voltage. It is compatible with DCC control system and has an analog control system. This AHM Power Pack was manufactured in 1970 and is a vintage item. It is a HO scale model that has a 1:87 gauge. The central station model is not painted and weighs 1 lb. It is a great addition to any collection and will provide hours of enjoyment for any train enthusiast.