Glass Break Alarm 2-Pack – 100dB Vibration Sensor, Wireless Window Door Security, Battery Operated Home Protection System

Most break-ins happen through windows, not doors. While you’re investing in deadbolts and door sensors, intruders are looking for the glass entry points you’ve left completely unprotected. These wireless glass break alarms close that gap.

Who This Is Best For: Homeowners with large windows, sliding glass doors, or ground-floor exposure who need coverage beyond a traditional door-focused security system. Renters who can’t install wired systems. Anyone who wants professional-grade window protection without monthly monitoring fees or complex installation.

These aren’t generic stick-on alarms that go off when someone walks by. The vibration sensors are calibrated to detect the specific frequency patterns of breaking glass while ignoring normal household vibrations. When glass breaks, you get an immediate 100dB alert — loud enough to wake the house and send intruders running.

Key Features & Benefits

• 100dB Piercing Alarm — Loud enough to wake neighbors, not just household members
• Vibration-Activated Sensor — Detects glass breaking, not wind or normal movement
• Wireless Battery Operation — No wiring, no installation complexity, works anywhere
• Two-Unit Coverage — Protect your most vulnerable windows with professional redundancy
• Instant Activation — No delay between glass break and alarm response
• Weather-Resistant Housing — Reliable operation in varying temperature and humidity

Practical Details

Each alarm runs on included batteries with months of standby time. Simple adhesive mounting works on any glass surface — windows, sliding doors, storm doors. Test button confirms operation. Legal in all US states as a security device. Package includes two complete alarm units with mounting hardware and batteries.

Windows are the most common break-in point because they’re the most overlooked. These alarms give you professional-grade glass break detection at a fraction of the cost of a monitored system. Two units mean you can cover your most exposed windows with reliable backup protection.

Frequently Asked Questions

Will these go off from normal vibrations like closing doors or footsteps?
No. The sensors are calibrated specifically for glass-breaking frequencies. Normal household activity won’t trigger false alarms, but actual glass breaking will activate the 100dB alert immediately.

How loud is 100dB compared to other alarms?
100dB is equivalent to a motorcycle engine at close range. It’s loud enough to wake everyone in the house and alert neighbors. Most personal alarms are 85-90dB, so this provides significantly more stopping power.

Do these work on all types of windows?
Yes, they work on single-pane, double-pane, and tempered glass. The vibration sensor detects the breaking pattern regardless of glass thickness. They’re equally effective on sliding doors, storm windows, and standard house windows.

How long do the batteries last?
In standby mode, batteries typically last 6-12 months depending on temperature and humidity conditions. The low-battery indicator gives you advance warning when replacement is needed. Replacement batteries are standard and available anywhere.