Glass Break Alarm – 100dB, 2-Pack, Battery Powered

Windows are the most common forced-entry point in residential break-ins, and most standard security setups leave them underprotected. The Glass Break Alarm addresses that gap directly — a compact, vibration-sensing device that mounts in seconds and triggers a 100dB siren the moment an intruder applies force to the glass. No hub required. No subscription. Just immediate, reliable detection where it counts.

Who This Window Alarm Is For

This alarm is built for renters who can’t drill or hardwire a security system, homeowners who want a fast supplement to an existing setup, and anyone protecting a ground-floor unit, garage window, or sliding glass door. It’s equally practical for small business owners monitoring a storefront after hours, or families who want a simple device that every household member — including kids — can understand and operate without instruction.

Is It the Right Fit for You?

Choose It If You Want

• Peel-and-stick installation with zero tools
• Vibration-based detection that activates on impact, not just sound
• Two units covering two separate entry points out of the box
• A self-resetting siren that doesn’t require manual intervention after each trigger

Consider Another Option If You Need

• A networked smart-home alarm that sends push notifications to your phone
• Magnetic door and window sensors that detect a door swinging open
• A monitored system with professional dispatch capability
• Motion detection coverage across an entire room rather than at a specific pane

Glass Break Alarm Features and Benefits

• 100dB Siren: Produces a 100dB alert loud enough to wake occupants and deter intruders — equivalent to a car horn at close range.
• Vibration Sensor Detection: Responds to the physical force applied to glass, triggering before the pane fully shatters so you get an earlier warning.
• 30-Second Auto-Reset: The siren runs for 30 seconds, then resets automatically — conserving battery life without requiring you to manually silence the unit.
• Peel-and-Stick Mount: Adhesive backing attaches to any smooth window or glass door surface in seconds. No screws, no damage to frames or sills.
• Compact Form Factor: At 2.5″ x 0.75″ and 0.2 lbs per unit, the alarm sits flush against glass without obstructing blinds or curtains.
• Batteries Included: Each unit runs on three 1.5V LR44/AG13 button cell batteries, included in the package — ready to deploy immediately.
• 2-Pack Configuration: Two fully independent units per order, letting you cover two windows, two glass doors, or one entry point per floor simultaneously.

How the Glass Break Alarm Compares

Before committing, it helps to know how vibration-based window alarms stack up against other common entry-point security options.

Care and What’s Included

What’s in the Box

• Two Glass Break Alarm units (white)
• Six 1.5V LR44/AG13 button cell batteries (three per unit, pre-installed)
• Adhesive backing on each unit for immediate mounting

Care and Maintenance

Wipe the sensor face with a dry cloth periodically to keep the vibration pickup clear of dust. If sensitivity decreases over time, replace the AG13 batteries with fresh 1.5V LR44 or AG13 button cells available at any hardware or electronics retailer. Avoid mounting on textured or porous surfaces — the adhesive requires a smooth, clean glass or frame surface for a secure hold.

Glass Break Alarm: Frequently Asked Questions

How does the Glass Break Alarm detect a break-in attempt?

The alarm uses a vibration sensor mounted directly on the glass surface. When an intruder strikes or applies force to the window, the sensor detects that physical impact and triggers the siren immediately. Because it responds to vibration rather than sound alone, it can activate even before the glass fully breaks, giving you an earlier alert than audio-only detection systems.

How loud is the Glass Break Alarm, and how long does it sound?

The siren outputs 100dB — enough to be heard throughout most standard residential spaces and to attract attention from neighbors or passersby. The alarm runs for 30 seconds after activation, then automatically resets and is ready to trigger again. No manual reset is needed between events, which is a practical advantage when you’re away from home.

Can I install the Glass Break Alarm on any type of window?

The unit is designed for smooth glass and glass door surfaces. The peel-and-stick adhesive backing adheres securely to clean, flat glass. It is not recommended for textured or frosted glass where the surface may prevent full adhesive contact. At 2.5″ x 0.75″, the profile is low enough to fit on most standard window frames without blocking the view or interfering with window hardware.

How many entry points does one purchase cover?

Each purchase includes two fully independent Glass Break Alarm units, each with its own batteries. That lets you protect two separate windows, one window and one glass door, or one entry point on each floor of a home — without buying additional hardware. Each unit operates independently, so triggering one does not affect the other.

Add Window Protection to Your Home Tonight

Two units, no wiring, and batteries already installed — the Glass Break Alarm is ready to deploy the moment it arrives. Select your quantity and add to cart to close the most overlooked gap in residential security.