Hey All, I'm currently looking at putting Saturn Zen switches in to match the e-DLTs I have around the place. I'm trying to look at my options - does the 40 series mech work in the Saturn Zen switches? Or is the only option to either use a R504xNL or a coupler? I'm guessing the mechs on the R504xNL can't be interchanged with traditional 240 switches either, and are C-Bus only?