SimpliSafe Glassbreak Sensor - 20ft. Range - Sound Detection Technology - Latest Gen
Quick take
The SimpliSafe Glassbreak Sensor helps protect vulnerable windows by listening for the sound of breaking glass (up to a 20 ft detection range) and triggering your SimpliSafe alarm. It pairs with the SimpliSafe app for phone alerts and runs on a lithium battery rated for about 4 years. The biggest buying caveat is that glassbreak detection is sensitive to placement and sound conditions, so it is not a “set and forget” sensor in every home layout.
Pros and cons
Pros
- Built to detect breaking-glass sounds and trigger an alarm within a stated 20 ft range.
- Supports instant phone alerts via the SimpliSafe app.
- Long battery life, lithium powered (about 4 years).
- Simple installation with peel-and-stick, with screws also available.
- Designed for SimpliSafe Gen 3 home security system compatibility.
Cons
- Performance can be harder to verify than door or motion sensors, so placement matters.
- Not the right choice if you need coverage inside rooms for general movement (it is a glassbreak sensor, not a motion detector).
- Review feedback shows mixed confidence in real-world sound triggers versus controlled testing.
What buyers think
Buyer feedback is generally positive about setup ease and overall system usefulness, with multiple comments describing the sensor as straightforward to install and helpful for peace of mind. A recurring theme is that glassbreak detection can be evaluated with recommended testing methods, and that when it’s positioned well it supports awareness of glass-entry attempts. At the same time, some buyers express limited confidence in real-world detection compared to controlled test sounds, which highlights the practical importance of correct placement and sound conditions. Overall, the review evidence supports the idea that this sensor works best when it is used specifically for protecting glass areas rather than replacing motion detection.
What this sensor does, and how it fits into a SimpliSafe system
This is a sound-based glassbreak sensor for the SimpliSafe home security ecosystem. Instead of watching for motion, it listens for the unique sound pattern associated with breaking glass and, when triggered, helps activate the alarm. The unit is specified for a maximum detection range of 20 feet, which makes it most relevant for protecting nearby windows and glass entry points where someone would have to break a pane to get in.
Key specs that matter for buying
- Detection method: sound detection designed for breaking glass.
- Maximum range: up to 20 feet.
- Power: battery powered (lithium), with an average battery life of about 4 years.
- Mounting: wall mount, peel-and-stick installation is supported (screws and extra adhesives are included).
- Compatibility: SimpliSafe Gen 3 home security system.
- Model: GBK301 (white).
Installation and daily usability
Setup is designed to be simple. Buyers commonly describe the install experience as easy, and the included options (peel-and-stick plus hardware if you prefer) make it flexible for different window-wall layouts. Once mounted, you’ll use the SimpliSafe app flow to add and configure the device so it can communicate alarm events and notifications to your phone.
Pros and cons, translated into real-world use
Best for
- Homes that want glass-entry coverage for windows and other glass-front vulnerabilities.
- Buyers who already use SimpliSafe Gen 3 and want to add detection where motion sensors may not be ideal.
- Anyone looking for app alerts so you get notified when trouble is detected.
Who should avoid it
- People who need motion detection for room-level movement, since this unit is purpose-built for glassbreak events.
- Buyers who want totally carefree performance without paying attention to placement. Glassbreak sensing depends heavily on how sound travels in your home.
- Anyone using a different security platform (it is intended for SimpliSafe Gen 3 compatibility).
Verdict: is it worth it?
The SimpliSafe Glassbreak Sensor is a solid add-on if your goal is to strengthen the “glass” layer of home security. Its appeal is the combination of 20 ft sound detection, app-based phone alerts, and low-maintenance battery life. The main reason to pause is that glassbreak sensors can be more placement-sensitive than sensors like door/window contacts, so it’s worth taking time to mount it correctly near the glass areas you want protected. If you are comparing options, consider whether you specifically need glassbreak coverage, or whether a motion sensor would better match your household setup and threat model.
Price and availability
For the most current pricing and availability, check the listing page here: Buy on Amazon.
FAQ
What range does the SimpliSafe Glassbreak Sensor cover?
It is specified for up to a 20 ft detection range for breaking-glass sound events.
Does it work with SimpliSafe Gen 3?
Yes, it is designed to be compatible with the SimpliSafe Gen 3 home security system.
How long does the battery last?
The battery is rated for about 4 years average life (lithium, battery powered).
How do you install it?
It supports peel-and-stick installation on a wall, shelf, or similar surface, and it can also be installed using included hardware (screws and extra adhesives).
Is it a motion detector?
No. It is a glassbreak sensor that listens for the sound of breaking glass, not a motion detector for general room activity.
Specifications
| Product Title | SimpliSafe Glassbreak Sensor - 20ft. Range - Sound Detection Technology - Compatible with The SimpliSafe Home Security System - Latest Gen |
|---|---|
| Category | Electronics > Security & Surveillance > Home Security Systems |
| Brand | SimpliSafe |
| Manufacturer | SimpliSafe |
| Model Number | GBK301 |
| Color | White |
| Item Weight | 0.14 Pounds |
| Power Source | Battery Powered |
| Maximum Range | 20 Feet |
| Mounting Type | Wall Mount |
| Battery Description | Lithium |
| Battery Average Life | 4 years |
| Compatible Devices | Desktop, Laptop, Smartphone, Tablet |
| Number of Batteries | 1 Lithium Metal batteries required. (included) |
| Operating Temperature | 60 Degrees Fahrenheit |
| Antenna Location | Residential security |
| Smart Home Compatibility | Smart Home Compatible |
| Item Dimensions D x W x H | 2.13"D x 1.6"W x 2.13"H |
| UPC | 815017029667 |
| Manufacturer Warranty Description | 1 year manufacturer |
| Mfr Part Number | GBK301 |
| Item Type Name | SimpliSafe Glassbreak Sensor - 20ft. Range - Sound Detection technology - Compatible with the SimpliSafe Home Security System - Latest Gen |
| Built-In Media | Extra Adhesives, Glassbreak sensor, Screws |
| Unit Count | 1.0 Count |
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