Not everyone feels at ease with self-defense tools that rely on physical confrontation, and I’m no exception. For many, myself included, personal safety alarms offer a straightforward alternative. These devices are especially helpful for families, whether it’s a child signaling for help after getting separated in a crowded space or a parent needing a quick way to alert others in an emergency. But personal safety alarms are useful for everyone, from solo joggers to commuters and hitchhikers.
In this guide, I’ve rounded up some of the best personal safety alarms that I and WIRED staffers have tested. We also have a guide for the Best Personal Safety Apps, as well as a guide for apps that help people with disabilities travel more easily.
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What Is a Personal Safety Alarm?
A personal safety alarm is a portable device designed to alert others if you’re in danger. Think of it as a handheld, wearable security system. When activated, it emits a loud, often piercing, siren to draw attention from nearby people and potentially deter the assailant. Most panic alarms blast at least 120 decibels, which is comparable to a thunderclap or a jet taking off, but volumes can vary. Many models also feature an LED flashlight, and some even go a step further by sending emergency alerts to preset contacts or 24/7 monitoring services.
TSA-friendly and allowed in places where other self-defense tools (like pepper spray) might be prohibited, personal security alarms can also offer peace of mind. Unlike your smartphone, they’re are built for simplicity and speed in urgent moments; no need to unlock a device or fumble with a safety app. This makes them ideal for college students, children, and seniors who need safer alternatives to traditional self-defense tools.
Other Reasons to Consider a Personal Alarm
If you’re hiking or camping in areas with wildlife, a loud alarm might help scare off dangerous animals if they wander too close. While it’s no guarantee—and it’s always best to be educated on avoidance techniques when exploring the great outdoors—a sudden sound can sometimes discourage a rogue raccoon or coyote from venturing closer.
Some safety alarms are equipped with features that connect you to emergency responders, which can be invaluable for medical emergencies. Alternatively, a loud siren can grab the attention of someone who can call 911 on your behalf if you’re not able to.
A Note on Pepper Sprays and Gels
Pepper spray is legal in all 50 states, but be sure to read your specific state’s fine print before you purchase. Most states only allow adults 18 and older to buy and carry, but additional restrictions may apply. Wisconsin and California, for example, regulate both the size of the canister and the concentration of oleoresin capsicum (OC) it can contain. In Massachusetts and New York, you can purchase pepper spray only from a licensed in-state pharmacist, so online shopping is off the table.
It’s also important to note that pepper spray (and gel) is classified as a weapon in some jurisdictions, meaning anyone with prior convictions is prohibited from carrying it altogether. Pepper spray is also often banned in certain spaces, including but not limited to government buildings, schools, and commercial flights. Ignoring local laws could lead to fines and/or criminal charges, so double-check the rules in your place of residence before you swipe that credit card.
We personally triggered every alarm and, when applicable, spoke to the emergency responders. Here’s what we evaluated:
- Portability: We looked at the size and weight of each device, prioritizing discreet devices that are easy to carry.
- Sound: Every alarm we chose produces between 120 and 140 decibels—loud enough to startle would-be assailants and alert bystanders in a crisis.
- Price: We factored in upfront costs and recurring expenses, such as subscription fees or replacement batteries. We also tested battery life.
- Ease of Use: Safety alarms should be simple to operate in high-stress situations. We also assessed the user experience during setup and the accessibility of customer support.
- The Extras: We took stock of included features and tested how well they performed compared to its competitors. Some alarms included these extras at no additional charge, while other companies required monetary upgrades; we kept this in mind.
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Photograph: Arlo
Best for Most Situations
Arlo Safe Button Accessory
The Arlo Safe Button Accessory is lightweight and refreshingly discreet. It’s designed for moments when pulling out your phone might be impractical or even unsafe. You’ll have to first connect it to the Arlo Safe app, though (iOS, Android). Much like Noonlight, Arlo’s Safe Button lets you hold down the physical button (or the in-app button) if you’re feeling uneasy. Enter your PIN within 10 seconds to deactivate, or don’t deactivate to dispatch emergency services.
The subscription-free plan notifies your designated emergency contacts via GPS tracking, but paid subscriptions will unlock access to services like real-time police notifications and live video streaming. Subscriptions cost $5 a month for individual coverage, $10 for the family plan, and $25 per month for the Safe and Secure Plan—which includes camera monitoring features if you own Arlo’s security cams.
The cap design (and included key ring) makes it easy to attach to a key chain or purse, but it also comes with a removable clip if you prefer to secure it to your clothing. It holds up OK for walking, though it’s not the best for runners who need a more stable option. Also, note that the Arlo Safe Button requires Bluetooth to be on and needs to stay close to your phone to work.
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Photograph: Flare
Best for Discreet Situations
Flare Smart Safety Bracelet
Unlike most wearables, the Flare Safety Bracelet actually looks like a piece of jewelry. You can choose from beaded, leather, or cuffed designs in a few different metal finishes (gold, silver, and slate). The SOS button is cleverly hidden, too.
One tap on the button triggers a “fake” phone call, which you can personalize through Flare’s mobile app (only available on iOS). It could be a “call” from a partner or roommate—anyone you’d typically get a check-in from. It comes from a real number saved to your contacts with a custom name, a brilliant exit strategy for an unsafe situation—or unpleasant date—without raising suspicion. But if you’re dealing with more than just an ick, holding down the button sends an alert and your location to your appointed contacts and/or 911. Here’s more information on how it works.
Flare is $149, which includes an app subscription, and a battery is built to last up to a year. After that, you’ll have to purchase a new bracelet.
Note: Flare picks five people each month who are in need to receive a free bracelet. You can nominate yourself or someone you know here.