The finest ingredients side innovation, quality, safety (vital electricity!) And reliable, albeit a little expensive, but ... I have a lot in our large T2 (at least almost 6 or even 8 Units), it avoids damaging all original wall made of our new home by plugging / unplugging / replugging (... ... ...). And it makes "clean" especially with 3 doses (+ T) arranged for each outlet. In short: TOP: very big thank you to the R & D engineers of the house L.