I have many DC Remote Turnouts and some DCC Remote Turnouts on my layout. They are both capable of being operated either electrically or manually. I also have a couple of DC Remote Turnouts that only operate manually through a slider under the points that sticks out on either side of the track for easy access. It has a very positive click when it locks the points in either direction. I understand these turnouts may be part of the Expansion Pack. Finally, my question is how do I purchase these switches separately?