Hi, I have an old dimmer switch at home that I really like... it's basically just a big plain square. I love that I can just touch anywhere on the square without having to aim at a button. I was recently trying to get more just like it but all I can find look exactly the same as the ones in B&Q. They seem to have a small circle in the middle. I'm wondering, does this mean you can only control the light by touching this small circle? Can anyone confirm this? And if this is the case does anyone know somewhere in the uk that sells touch switches that have a much larger activation area? Thanks.