Glass Break Alarm 2-Pack, 100 dB Vibration Sensor, Adhesive Mount, Battery Operated with Batteries Included, No Wiring, Window & Door Security for Homes and Apartments

You’ve probably noticed it too: the sliding glass door that doesn’t quite lock right, or that basement window nobody thinks twice about. Ground-floor glass is where a lot of break-ins start, and most people don’t do anything about it because they assume fixing that means a security system, an installer, and a contract. It doesn’t.

Who this is best for: Renters who can’t drill into window frames or run wires through walls. Homeowners who want a fast, affordable second layer of protection on top of existing locks. Anyone with a vacation home, a college dorm, or an apartment where a full alarm system isn’t practical—or allowed.

If you’re looking for something you can install in the next five minutes without calling anyone or reading a manual, this is it. Two alarms means two points of coverage—a bedroom window and a back door, or two vulnerable windows on the same side of the house. That’s usually all it takes to cover the entry points a burglar is most likely to try first.

Key Features & Benefits

• 100 dB siren — loud enough to startle an intruder and alert you or neighbors, comparable to a motorcycle engine at close range
• Vibration-triggered sensor — responds to the shock of breaking glass or a forced door, not just sound, cutting down on false alarms
• Adhesive mount — sticks to glass or frames with no drilling, no wiring, no damage to rentals or fresh paint
• Batteries included — works right out of the box, no separate trip to buy button cells
• Compact, low-profile design — mounts discreetly so it doesn’t stand out or invite tampering
• Two-pack coverage — protect two entry points for less than the cost of one traditional sensor kit

How It Compares

Practical Details

These alarms are legal to use in all U.S. states—no permits or registration needed for personal use. Each unit comes with the adhesive mount, batteries, and alarm sensor ready to install. Check the adhesive periodically, especially in humid climates, and replace batteries roughly once a year or when the test button sounds weak.

Grab the 2-pack and cover the two windows or doors that worry you most. If you need more coverage, browse the rest of our door and window alarm lineup to round out your setup.

FAQ

Will this damage my window frame or glass?
No. The adhesive mount is designed to hold securely without leaving residue or damaging paint, glass, or frames when removed carefully. It’s a common choice for renters who need something reversible.

Does it trigger from normal house vibrations, like slamming a door?
The sensor is calibrated to respond to the sharp impact of breaking glass or forced entry, not everyday vibrations like walking nearby or closing a door normally. Some sensitivity testing during setup helps you find the right placement.

How long do the included batteries last?
Most users get about a year of standby life from the included batteries under normal conditions. The alarm includes a test button so you can check battery strength anytime without waiting for a failure.

Can I use these on both windows and doors?
Yes. The adhesive mount works on glass, wood, and most metal door frames, making it flexible enough to protect whichever entry points concern you most.