I have it connected as pure on / off switch for the patio lights, so I can not write anything to the dimmer function. But he also turns still on 15Meter by two walls throughout - and very quickly. (Not like outlet remote controls, where you desperately holding the button down and thus wags in the air, until finally doing something.)
The case could actually be significantly smaller, there's a lot of space in there. But the content consists of only one to be taken lightly board that one thereby also easily constructed fast and elsewhere. I think the thing great and am sorry to have not the same a few more orders on stock.
