Resonant™ 133 dB Personal Alarm, LED Light, Ultra Slim, AAA Battery Powered

Our founder didn't set out to make another personal alarm — he'd already built the #1 best-selling personal alarm company in the United States and sold it. But he kept thinking about what the perfect alarm would look like. The answer is Resonant™: our slimmest design ever, powered by a single standard AAA battery, producing the loudest alarm we've ever made.  Not all alarms are created equal. 

Resonant is better.

Attention changes everything.

Most personal alarms are marketed on one number: how loud they are. Loudness matters — but it isn't the point. The point is what that sound does. Pull the pin, and Resonant emits a continuous 133 dB tone that interrupts an unfolding situation, alerts everyone nearby, and creates an opportunity for you to move toward safety.

Not to confront. Not to escalate. To make the moment visible — instantly — to everyone around you.

Engineered for the moment it matters.

Activation is deliberate and simple: pull the pin, and the alarm sounds continuously until the pin is reinserted — so it keeps drawing attention even if it's dropped or set down. Many users activate the alarm and immediately move away from the source of danger; some safety instructors recommend exactly that — create distance while the alarm keeps working behind you.  The last thing that assailants want is noise and attention.  

Barely thicker than its own battery.

At just 0.5", this is the slimmest profile personal alarm we have ever made. It sits flat in a pocket, clips flush against a keychain, and slips into a running belt or travel pouch without a second thought. Because the best safety device is the one that's actually with you.

Powered simply. Built to last.

One standard alkaline AAA battery — available anywhere in the world, replaceable in seconds. No charging cables, no proprietary cells, no sealed disposable design. An integrated LED safety light earns its place daily: a keyhole at night, a dark path, the bottom of a bag.  Not all personal alarms are created equal.

A quiet kind of confidence.

For students crossing campus after a late class. For runners on early-morning routes. For travelers, commuters, and seniors. Resonant offers something subtle but real: the confidence of knowing that if a moment ever turns uncertain, you can make it loud, visible, and public in under a second.

Pull the pin, and everything changes: heads turn, attention arrives, and the moment is no longer private. You will be heard.