This is strange, I’m certain mine is a UK model as it has a 3 pin plug, and I’ve got a Z wave module installed in my Conexis L1 lock and have managed to set it up to work the ring alarm base station just fine. Unless they’ve removed something from the software to prevent this since I installed mine I can’t understand what’s going wrong. Sanjeev any chance you can shoot me an email and we can chat maybe I can talk you through it.