Strengths: It somewhat works and does the job. Spend $40 bucks more and get yourself something better!
Weaknesses: Shock sensor sucks and is not thorough, oversensitive at specific areas of car and not so well in other areas.
Summary: An alarm is as good as its installation. The original installation was mediocre at best this time around. I have multiple cars with 3 different alarm systems. I was very displeased with the performance of this alarm even after having it all checked out and tweaked. The shock sensor was extra sensitive for only the roof and windshield but nothing else unless you want false alerts. Remounting didn't help at all. The worst of the ones i've used.