Category one delivers the highest standard of security with equally alarm and immobiliser functions merged. Category 2 provides only an immobiliser, which even now prevents the car from setting up without having authorisation. Both of those are passively set and give superb defense against theft. Quite a few Insurance plan https://medium.com/@trackerfit11/why-choosing-a-thatcham-tracker-strengthens-vehicle-security-6b79d8a9c256