The second - and we are still very satisfied

The first mat I had almost three years and it had to be replaced, because to me the real bell was fallen down (for x times.) And had now replaced a contact - even I could solder makeshift back, so that the bell, the delivery time for the new still survived. For the little money there is in my opinion absolutely amazing that it has held for so long, incl. Relocation and several vacations where the mat had to be there, estimated 5000 patio door openings / closings and said three years out there !! and only half protected from the door. The wire had taken no harm, though he was most of the time not "misplaced", but was clamped just as in the corner of the door frame. The battery lasts very long, two consumed during the three years, the third has been only very briefly in it.

Conclusion: anytime again and I'll probably a precaution ordered a reserve.