"I bought this in order to power our Christmas train. Once I knew I had all the correct parts it was VERY easy to set up and assemble.
The only drawback being that this came with virtually NO instructions. (NOTE: the instructions come with the Lego kit you purchased the power function for). However, once you use it and know how it works with the Legos that you purchased it for you can use it VERY easily for future products or to assemble your own original design.
Was very easy to set up and get going per the Lego instructions and after that it was VERY EXCITEDLY to see all Legos in action!!!"