WE HAVE EXPERIENCE WITH TOUCH TOGGLES, MTH DCS AND LIONEL COMMAND CONTROL. WE DO NOT RECOMMEND TOUCH TOGGLES. See below.
There is a reason that you do not see these being used on O gauge layouts
We used them on about 30 turnouts, first with DCS and MTH products. Ross track and turnouts and Tortoise switch machines. They were fabulous/fantastic/easy to install/and they worked! We were sold.
Enter Lionel and, when connected, you never saw so many flashing lights and noise of turnouts changing. I talked to the Kevin Hunter, the owner numerous times, installed a ground rod thru the train room floor, nothing worked. He is very nice and tried to help.
Kevin sent us a ground connector. No help.
Then one day we held the wire we had attached to the Touch Toggle control ground and touched the toggle with our other hand. It worked perfectly.
So we took a piece of aluminum, attached the wire to it and screwed it to the Benchwork. Most of the time when you press the aluminum plate and the touch toggle at the same time, it works. Not always. Then you wet your fingers, touch and hold, and it may work.
We left them installed on the freight and passenger yards for the present but we are still building the layout and seldom use those turnouts. We do not have time to try and figure this out despite the significant $$$ invested.
Our other turnouts are now controlled by the MTH AIU and require separate relays because Tortoise require a longer time to throw than the momentary AIU provides. They work perfectly.
WE DO NOT RECOMMEND THE USE OF TOUCH TOGGLES AND LIONEL COMMAND CONTROL.
I searched here and found someone else who had tried Touch Toggles. He could not get them to work either.
If you want to know more, I will be glad to talk with you. My advice is, if you use or intend to use Lionel command control, stay away. E-mail address is under my personal info.
Note that Lionel has some other control methods such as Bluetooth, etc. We have not tried that. Our layout is fairly large and we need the broader systems.
Good luck..if by some chance you find an answer, please let me know what it is. We would like to use these in yards and the engine service area. What we are doing now is not a satisfactory answer.