Door Stop Alarm With Sensor

Door Stop Alarm with Sensor — Portable, Loud, Ready to Deploy

If you need a door stop alarm with a built-in motion sensor, the 120dB Door Stop Burglar Alarm is the call. It wedges under any inward-swinging door, triggers on contact, and emits a 120-decibel siren that neutralizes the element of surprise — no installation, no wiring, no guesswork. See the 120dB Door Stop Alarm →

Our Top Pick: 120dB Door Stop Burglar Alarm

120dB Door Stop Burglar Alarm with motion sensor wedge design

This alarm is purpose-built for exactly this use case. The wedge sits flush against the base of a door; any forced entry compresses the sensor and fires the 120dB alarm instantly. That output — equivalent to a thunderclap at close range — buys you critical response time in a hotel room, rental, dorm, or temporary residence. It runs on a single 9V battery, weighs next to nothing, and packs flat in any luggage.

Alarm Output: 120dB piezoelectric siren
Power: 9V battery operation — no wiring or charging required
Design: Wedge profile fits inward-swinging doors; activates on compression

Price: Original price was: $7.95.Current price is: $6.75.

See the 120dB Door Stop Alarm →

What to Look For in a Door Stop Alarm with Sensor

Not every door alarm delivers the same level of performance. Prioritize these criteria before you buy:

Trigger sensitivity: A compression-based sensor activates the instant the door moves — no delay, no setup needed after placement.
Decibel output: Anything below 100dB is easily ignored. A 120dB alarm creates immediate disorientation and alerts others in adjacent rooms.
Power source: 9V battery operation means instant readiness — no recharging cycles, no dead device at 2 a.m.
Form factor: A true wedge profile works on any hard-surface floor, at any door gap height, without modification.

Browse the full lineup of door and window alarms to see all available options.

Frequently Asked Questions

Does this door stop alarm work on carpet?

The wedge design performs best on hard flooring — tile, hardwood, and laminate. On thick carpet, the wedge may not seat firmly enough to trigger reliably on light contact. For carpeted rooms, consider pairing it with a door or window alarm mounted directly to the door frame.

How loud is 120dB in practical terms?

120 decibels is roughly equivalent to a live rock concert at close range or a thunderclap nearby. In an enclosed room, that output is immediately disorienting for an intruder and loud enough to alert occupants in adjacent rooms — which is exactly the tactical purpose of the alarm.

Can I use this alarm in a hotel or rental property?

Yes. That’s one of its primary use cases. The wedge requires no installation, leaves no marks, and deploys in under five seconds. Pack it with your travel kit, place it under the hotel room door before you sleep, and recover it when you check out. No tools, no damage, no hassle.

Ready to Secure Any Door — Tonight

A door stop alarm with a motion sensor is one of the simplest, most effective layers of security you can add to any temporary or permanent space. The 120dB Door Stop Alarm deploys in seconds and costs less than a meal — there’s no reason to leave your door unprotected. Get the 120dB Door Stop Alarm → or explore the full door and window alarm collection.