which is better?
i see pros and cons with all of them
shock:
pros, will tell you if someone kicks your car, breaks your window, tries to jack it up
cons sparkplug ceramic trick on windows will not shock it enough, annoying if a car with a loud exhaust drives by.
interior microwave:
pros,will detect if someone actually gains entry to cabin
cons dosnt stop someone jacking up, kicking etc
external microwave:
Pros will detect someone lurking around, jacking etc
a nuicance if people are simply walking past
????
tell me your experiences, without going into details of your own system of course.