A superb introductory set to the amazing World of computer control by Hornby. This set includes the amazing eLink; digital unit which when connected to a Windows PC or laptop and with the RailMaster; software loaded provides control access to a staggering 9999 locomotives and in excess of 2000 electrical accessories and points. The set is ideally suited for those who wish to build on this train set. The MidiMat included in this set can certainly help with this development with track extensions being made easy with the addition of extra Track and Building packs. Included in the set is a GWR Class 2721 locomotive fitted with a digital decoder. The two wagons and brake coach are included, but additional rolling stock can be added. The set is ideally suited for those who wish to build on this train set. The MidiMat included in this set can certainly help with this development with track extensions being made easy with the addition of extra Track and Building packs. Set includes the eLink digital unit and a 1 amp transformer. A PC or Laptop (not included) are required to operate this train. One supplied. For ages 5 years and over. WARNING(S): Not suitable for children under 3 years old. For domestic use only.