I got the Stiebel Eltron exchanged for a 12 year old machine AEG the same price range. From a performance point of a world of difference. Quick hot and (remeasured) degrees accurate hot water this time also in sufficient quantity for showering and washing. Illustrated easy to understand installation instructions. I was excited! Cable feed possible and even the terminals were able to up and down to be replaced from the top down. Ideal for replacement in older installations. That must simply fit. Ultimately, you can turn the whole unit including display also. Only one plug in the wall? No matter using the supplied mounting plate can always find the right hole. So I also put away the drill again. The supplied fittings are suitable for even the most unusual pre-installation. Everything is flexible and adaptable. I'm rarely happy about so many technical refinements. Turn on the bolts for securing ne matching mother? One does not need. It is a universal quick-closing part with plugged thereby ne half turn and the DEH budge. Phew. Am really excited. Do not be fooled by the picture. The DEH is greater than in the photo (fortunately or else I would have nachtapezieren).