Although produced by the same manufacturer and sold to be assembled with each other, the diameter of the double-sided adhesive affixed onto the magnetic medium Nemaxx NX1 exceeds 5 mm beyond the hollow where it is supposed to position based on the Nemaxx FL10 sensor. We must therefore either overlap the adhesive, or apply the solution proposed by the seller questioned about it: "We are well aware of this fact you can use the magnetic support on the diameter which overlaps with the smoke detector either. the middle (even if the surface that glue is not very large it takes), or moved to one side to increase the sticky surface. "DIY appearing me does not ensure the sustainability of fixing the sensor and therefore the security expected of this product.