Surprising Insight: Compared Car Alarms with 108dB & tested Sensors... Anti-Theft Magic for Vehicles We were intrigued by the 108dB Car Alarm System’s claim of a potent vibration sensor, and now we’ve tested its performance firsthand. The upgrade to version 4.0 delivers on its promise, with a magnetic installation design that’s both sleek and practical. On our evaluation, the alarm triggered decisively during simulated vibrations, but what impressed us most was the silent nature of its operation until engaged. The wireless remote control felt intuitive, and the red light offers a subtle yet effective deterrent. While volume alone doesn’t guarantee theft prevention, the alarm’s reliability and seamless integration into our testing vehicles make it a standout contender. For those seeking a balance of visibility and smart design, we find this system offers genuine anti-theft magic—well worth considering for added vehicle security.