SABRE Wedge Door Stop Security Alarm
- 120 dB alarm, audible up to 1,500 ft
- 9V battery required, not included
- 0.75 inch gap limit under inward-swinging doors
- Non-skid pad, no wiring, works in power outages
- Low battery indicator
- 6.5 x 1.75 x 1.75 inches, 4.8 ounces, 90 day warranty
Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A wedge alarm that goes under an inward-swinging door and sounds when pressure is applied. The battery is not included, and the door gap must match the listed range.
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ASIN: B00M30SQGACategory: Home Security Systems
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Overview
A renter, student or traveler gets a battery-powered alarm that slides under the door with no tools or wiring. The wedge sounds when door pressure is applied, and the non-skid pad helps hold the door shut.
It works in a bedroom, dorm, hotel room or apartment, alone or as a backup for a home alarm. It only fits doors with a small gap beneath, and the listing gives conflicting range figures.
Who it's for
People in temporary housing who want a loud alert with no wiring. Hotel guests and dorm residents are named. Anyone with a wide gap under the door should choose a different alarm.
Pros and cons
- Slides under the door in seconds
- No wiring needed
- Works during power outages
- Low battery indicator
- Battery not included
- Only fits small door gaps
- Range figures conflict in the listing
Performance notes
The wedge senses pressure from the door and triggers the siren, so it needs a snug fit under the door. A larger gap prevents activation. A small screwdriver is needed to open the battery compartment cover.
Specifications
| Brand | Sabre |
|---|---|
| Dimensions & fit | |
| Item weight | 4.8 ounces |
| Item Dimensions L X W X H | 6.5 x 1.75 x 1.75 inches |
| Size | 1 Pack |
| Capacity & performance | |
| Maximum Range | 1,500 ft (description) |
| Audible Noise | 120 dB |
| Power & efficiency | |
| Power source | Battery powered |
| Voltage | 9 volts |
| Construction & materials | |
| Color | White |
| Compatibility & installation | |
| Mounting Type | Wedge under inward-swinging door |
| Compatible Devices | Home Security System |
| Included components | |
| Unit Count | 1 Count |
| Warranty & support | |
| Warranty Description | 90 days limited |
| Other details | |
| Number Of Batteries | 1 x 9V alkaline, not included |
| Door gap | Up to 0.75 inch |
| BuiltIn Media | door stop alarm |
| Control Method | App |
| Mfr Part Number | HS-DSA |
| Sensor Technology | Contact Sensor |
Closest rivals on specs
Philips LRM3320W Window and Door Alarm 4 Pack- Item Weight 0.3 vs 0.4 pounds (-25%)
- Voltage 9 vs 1.5 volts (+500%)
aosu D1 Classic Solar Security Camera 4-Cam Kit- Item Weight 0.3 vs 7.41 pounds (-96%)
- Voltage 9 vs 5 volts (+80%)
Frequently asked questions
How do I install the SABRE door stop alarm?
Slide it under the crack of an inward-swinging door. No wiring is needed, and a small Philips #1 screwdriver opens the battery cover.
Does the SABRE door stop alarm include a battery?
No. The description says it requires 1 x 9V battery, not included.
Will it work with any door?
It works with doors that have a 0.75 inch gap under the door. A greater gap prevents activation.
Does it need power?
No wiring is needed, so it works during power outages.