Interesting, I don't need anything to trigger my alarm. It just goes off within minutes of me leaving the car. We live in rural France, in a tiny village with no through traffic, so no subwoofers or loud exhausts. If I have Sentry Mode on and a USB stick in there are so many recordings that I need to rotate USBs daily to avoid them overfilling and being rendered useless. There is nothing to see on the USB recordings, unless it's shifting sunlight or leaves rustling on the trees.
If I don't have a USB in I just get constant false alarms.
It appears the security feature is far too sensitive but Tesla (France) only say it's a known issue and may be fixed with a future software update.
For the time being I just have to burn through USBs or turn off Sentry and an the alarm.