Prodigy Advance2 consists of three elements. The power pack transforms the power from your mains socket to the base unit. The base unit is the brains behind the operation, it contains all the technology you need to send DCC commands to your trains and accessories. However, short of turning the power on and off, you'll find your closest companion is the Walkabout Controller which plugs straight in to the base unit.
The Walkabout is a handheld controller that you use to send your commands to the Base Unit, which then sends them on to the relevant decoder on your layout. You control the speed and direction of your trains from here. One of the key features of DCC operation is that each of your locomotives has a numeric address which you select as and when you want to run that locomotive. The handset this pack is fitted with a clear and bright blue display.