I had hoped so much to me! In particular, protection of my new car against marten attacks. Unfortunately no avail. The insulation of the hood is as tattered as with my old car! Ironically, on the unit of damage is particularly great! The device works as described, my wife can also hear the beep, I do not (maybe I'm too old? :-)). Fortunately, the boy has a bite taken no cables and other important lines ....... insurance cover is then but a different matter. Two points for the timely delivery and 1 month without marten damage.