Dave, here is a link to all of the transfer switches currently offered by Southwire/Surge Guard:
https://rvpower.southwire.com/produc...sfer-switches/
My 2018 Cornerstone has a 40350-RVC transfer switch. I'm not sure but I believe Entegra is currently installing the 40450-RVC. Your coach may have a 41260 or it might have a 40350-RVC.
The 40350-RVC and 40450-RVC are virtually identical except the 40450-RVC has one additional feature called "Shore Power Sensing." Southwire defines the shore power sensing feature as follows:
"RVC network communication of both generator and shore power availability through exclusive shore power sensing technology.
Allows the RVC network to better control the power source of the RV and reconnect with shore power when it is available."
If you want to replace your transfer switch, I would go with the 40350-RVC or 40450-RVC - take your pick.