The alarm handle does what he should. We use it currently on our patio door and sleep calmed in the neighborhood after several burglaries. The installation was very easy and did not take long, the processing is OK, but could be more solid at the transition to the window frame. Yes, as mentioned, it may be that you now and then triggers a false alarm - not very nice, because I always troubled me animal - at least one can say with certainty that there would be a burglar does not go differently. Schön would have been if the handle could conclude.
