I installed a Lionel SC-2 TMCC switch & accessory controller. I won it on Ebay and it got here Monday. I removed the remote switches and I had to rewire the all the switches (4) for the SC-2. Once I got it all wired, then I had to program ID numbers for the switches. After dealing with some slight difficulties, I got it working. Now I can add the 4x6 extension and activate the switches without having to walk around the layout to get to the remote switches. Plus it's cheaper than buying command switch tracks.