Home » Products » Door Stop Alarm 120dB with Tamper Sensor — Wedge Blocks Entry and Triggers Siren, Movement Detection, On/Off Switch, Low Battery Indicator, 9V Battery Operated, 6.375″ x 1.75″
Door Stop Alarm 120dB with Tamper Sensor — Wedge Blocks Entry and Triggers Siren, Movement Detection, On/Off Switch, Low Battery Indicator, 9V Battery Operated, 6.375" x 1.75"
Door Stop Alarm 120dB with Tamper Sensor — Wedge Blocks Entry and Triggers Siren, Movement Detection, On/Off Switch, Low Battery Indicator, 9V Battery Operated, 6.375" x 1.75" - Image 2
Door Stop Alarm 120dB with Tamper Sensor — Wedge Blocks Entry and Triggers Siren, Movement Detection, On/Off Switch, Low Battery Indicator, 9V Battery Operated, 6.375" x 1.75" - Image 3

Door Stop Alarm 120dB with Tamper Sensor — Wedge Blocks Entry and Triggers Siren, Movement Detection, On/Off Switch, Low Battery Indicator, 9V Battery Operated, 6.375″ x 1.75″

SKU: ST-DSAL
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$7.95

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This door stop alarm does two things at once — it physically blocks a door from opening and triggers a 120dB siren the moment someone tries to push through. Add the built-in movement sensor that activates if anyone tampers with the device, and you have a compact security system that turns any door into a defended entry point.
  • 120dB alarm siren activates when pressure is applied to the door stop wedge
  • Physical wedge creates a barrier that prevents the door from opening
  • Built-in movement sensor triggers alarm if the device is tampered with
  • On/off switch on back with low battery indicator light for easy monitoring
  • Compact 6.375" x 1.75" at 0.5 lbs — powered by one 9V battery (not included)

Two Defenses in One Device

Most alarms only make noise. This one physically stops the door from opening while simultaneously firing a 120dB siren — one of the loudest alarm levels available in portable security. The combination of a physical barrier and an ear-splitting alert creates a layered defense that an intruder cannot quietly overcome.

Who This Door Stop Alarm Is For

Hotel and Airbnb travelers who want both a physical door block and an audible alarm. College students securing dorm room doors that may have unreliable locks. Solo travelers who need peace of mind behind closed doors in unfamiliar locations.

Homeowners reinforcing bedroom or bathroom doors as a secondary security layer. Anyone who has ever wondered whether a hotel room door lock is truly secure.

Is This the Right Choice for You?

Choose the Door Stop Alarm if you want:

  • A physical barrier that prevents the door from being pushed open
  • One of the loudest portable alarms at 120dB
  • Tamper detection that triggers the alarm if the device is moved

Consider something else if you need:

  • An alarm that works on doorknobs or windows (portable door guard is better)
  • A permanent home security solution with monitoring

How the Dual Defense System Works

Place the wedge against the bottom of any inward-opening door. When someone pushes the door, pressure on the stop plate compresses the alarm mechanism and triggers the 120dB siren. The alarm continues until pressure is released — as long as someone is pushing, the siren is screaming. This is not a timed alarm that stops after a few seconds; it responds directly to the threat.

The built-in movement sensor adds a second layer. If someone tries to slide, kick, or remove the door stop itself, the sensor detects the tampering and triggers the alarm independently. The on/off switch on the back lets you arm and disarm the device easily, and the low battery indicator light tells you when the 9V battery needs replacing.

Quick Comparison: How Does a Door Stop Alarm Stack Up?

Feature Door Stop Alarm Portable Door Guard Magnetic Door Alarm Barking Dog Alarm
Physical Barrier Yes — wedge block ✔ No No No
Alert Volume 120dB ✔ 98dB 90dB Varies
Tamper Detection Movement sensor ✔ Vibration sensor No No
Portability Travel-ready ✔ Travel-ready ✔ Semi-permanent AC powered
Installation Place on floor ✔ Hang on knob ✔ Adhesive mount Plug in
Best For Hotels and travel Travel and dorms Home perimeter Home interior

Practical Details

Dimensions: 6.375″ x 1.75″. Weight: 0.5 lbs. 120dB siren activated by door pressure. Built-in movement tamper sensor. On/off switch on back. Low battery indicator light. Powered by one 9V battery (not included). No installation or tools required. Manufactured by Safety Technology.

Block the door and sound the alarm — add the 120dB Door Stop Alarm to your travel security kit now.

Frequently Asked Questions

Does the door stop alarm work on all types of doors?

It works on any inward-opening door with a gap at the bottom for the wedge. Carpeted and hard floors both work, though hard surfaces provide the best grip. It is not designed for outward-opening doors since the wedge needs to brace against interior floor space.

How loud is 120dB compared to other alarms?

120dB is comparable to the volume of a rock concert or a thunderclap. It is significantly louder than standard door alarms in the 90-100dB range. At this volume, anyone nearby will hear the alarm clearly, and the noise itself serves as a powerful deterrent against entry.

Will the alarm keep going as long as someone pushes the door?

Yes. Unlike timed alarms that sound for a set duration and stop, the door stop alarm activates based on physical pressure. The siren sounds as long as force is applied to the wedge plate. Once the pressure is released, the alarm stops automatically and remains ready for the next activation.

ManufacturerSafety Technology
Decibles120 db
BatteryOne 9 Volt
Weight0.5 lbs
Dimensions6 3/8" x 1 ¾”

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