The Psychology Behind Emergency Alarms: How They Deter Threats

We often think of personal safety devices as technical tools — a siren, a flashlight, a keychain. But at the heart of it, an emergency alarm like BoomBird works because of psychology . It's not just about how loud it is, but how it makes people think, feel, and react — especially in threatening situations. Let’s break down the science and psychology behind personal safety alarms and why they’re such a powerful form of deterrence. What Is an Emergency Alarm? A personal safety alarm is a compact device that, when activated, emits a very loud sound (usually around 130dB) — equivalent to a jet engine taking off. BoomBird also includes a flashing strobe light , drawing attention even in dark or crowded places. But the impact of the alarm goes far beyond volume. How Loud Sounds Disrupt Threats 1. Startling the Attacker A loud, unexpected sound shocks the brain’s nervous system , disrupting the attacker’s intent. In psychology, this is called the “startle reflex” — an ...