I bought it because of its excellent value for money. 3-year warranty so no quality level concern. I got out of the package and have tested all OK! I appreciated that two screws and two pins are provided and length. Anchors for hollow plaster or concrete block. The base allows to double-sided tape for allergic to the drill. I verified on the government website it matches the regulatory characteristics that is the case: CE Standard EN14604. The EN 14604 is marked on the back of the box just to the right of EC small. For the price I am very satisfied when we see that some sell their detector 20.