This cable system from Paulmann with 7 spots is easy to install and who knows Paul man who knows that there's a good quality. The frames are of course made of plastic, as in corresponding pitches no sagging is heavy versions materialize. But this falls not on unpleasant. The transformer is very low, of course, there is a slight noise like all transformers, but this is only audible in absolute silence and with full concentration on the transformer. For all LED fans: Operate 7x 4W LEDs and everything works fine. Therefore do not worry before that it does not work in the FAQ, it was described as theoretically possible, in practice, it is proved.