The market is not yet providing much of what we need; and that is retro-fit modules for existing power and light switches. So I was pleased to find this thread and the recommendation for Fibaro Z-Wave Dimmer 2 Mini-Modules (even as switches). I then looked on vesternet and found a couple of other options which look cheaper by Aeon Labs, Qubino, Everspring and Philio (http://www.vesternet.com/smart-home/technologies/z-wave/lighting-sockets/module). Can anyone comment on these other products as alternatives please? My own viewing was that none are suitable for the core UK market as they all need 3-core wire; so we only have one option in the Fibaro Dimmer 2…?