Roco Z21 system
I am looking to start using DCC. I have a couple of locomotives with Roco decoders in them. Is there a recommended Roco system to start with? I see the various units available. I don't see well. So I downloaded the Z21 app on my IPhone which works very well with my screen reader. However, I am unsure what unit to buy to make everything work.
Also, how do I make DCC switches?