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Portable Door Guard Alarm 98dB with Vibration Sensor and Flashlight – Travel Security, Detects Through Metal and Wood

SKU: ST-DG
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Original price was: $11.91.Current price is: $10.12.

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Hang it on any doorknob and it becomes your personal security guard. The Door Guard uses a vibration sensor that detects movement through metal and wooden doors — even if someone's wearing gloves. Built-in flashlight, runs on 2 AAA batteries, and it's small enough to throw in a travel bag.

  • Vibration sensor detects movement through metal and wooden doors — even with gloves
  • 98dB alarm sounds when the door is disturbed — loud enough to wake you and scare intruders
  • Built-in LED flashlight for navigating dark hotel rooms and unfamiliar spaces
  • Portable at just 4" x 2" x 1¾" and 0.15 lbs — perfect for travel and dorm rooms
  • Runs on 2 AAA batteries with a 1-year warranty from Safety Technology

Take Your Door Security With You Everywhere

Here’s the deal — hotel room locks are fine, but you don’t know who has a key card. Airbnb doors might have old locks. Dorm rooms have RAs with master keys. The Door Guard hangs on any doorknob and uses a vibration sensor to detect when someone messes with the door — not just when it opens, but when someone touches, jiggles, or bumps it. Even through gloves. It gives you a 98dB heads-up before anyone gets inside.

Who This Alarm Is For

Travelers — hotel rooms, Airbnbs, hostels. College students in dorms. Anyone sleeping in an unfamiliar place who wants an extra layer of security beyond whatever lock is on the door. Real estate agents doing solo showings. Nurses or healthcare workers resting in on-call rooms. If you sleep behind a door you don’t fully trust, this was built for that exact situation.

Is This the Right Choice for You?

Choose the Door Guard if you want:

  • Portable door security that travels with you — weighs almost nothing
  • Vibration detection that works before the door even opens
  • A built-in flashlight for dark, unfamiliar rooms

Consider something else if you need:

  • Something that physically blocks the door — the door stop alarm wedges under the door
  • Permanent home security — magnetic door alarms are better for fixed entry points

Detects the Attempt, Not Just the Entry

Most door alarms trigger when the door opens. This one triggers when someone messes with the door. The vibration sensor picks up physical disturbance through metal and wooden doors — a key turning, a handle jiggling, a shoulder bump. It doesn’t matter if the person is wearing gloves, because the sensor reads vibration through the door material itself. That gives you warning before the door is even open, which is time you wouldn’t otherwise have.

The built-in flashlight is a smart addition for a travel product. When you wake up in a dark hotel room because the alarm just went off, you want immediate light to see what’s happening. It’s small but practical — exactly what you’d need in that moment.

Quick Comparison: How Does a Door Alarm Stack Up?

Feature Door/Window Alarm Motion Sensor Security Camera Barking Dog Alarm
Setup Peel and stick ✓ Mount and aim Install + WiFi Plug in and aim
Monthly Fees None ✓ None ✓ Often required None ✓
Detection Type Contact — door/window opens ✓ Movement in room Video motion Radar through walls ✓
Portability Travel-friendly ✓ Semi-portable Fixed install Semi-portable
Best For Entry points, travel Room coverage Recording evidence Whole-house deterrent

Practical Details

The Door Guard measures 4″ x 2″ x 1¾” and weighs just 0.15 pounds — lighter than a granola bar. It runs on 2 AAA batteries, which you can find anywhere in the world. Hang it on the inside doorknob of any standard door. Made by Safety Technology with a 1-year warranty.

Throw it in your travel bag and forget it’s there — until the night you need it and it wakes you up before someone gets in.

Frequently Asked Questions

Will it fit on any doorknob?

It hangs on standard round and lever-style doorknobs. Most hotel rooms, dorms, and apartments use standard hardware. It’s designed to be universal for travel.

What if housekeeping touches the door?

It’ll go off — that’s the point. If you’re sleeping and someone touches the door, you’ll know. Turn it off when you leave the room or when you’re expecting housekeeping. It’s a simple on/off control.

Is 98dB loud enough to be effective?

In a quiet hotel hallway at 2 AM? Absolutely. 98dB is louder than a blender and more than enough to wake you up and make whoever’s at the door reconsider their timing. Combined with the vibration detection, you get an early warning system that doesn’t need to be deafening to be effective.

ManufacturerSafety Technology
Decibles98 db
Battery2 AAA
Warranty1 year
Weight0.15 lbs
Dimensions4" x 2" x 1 ¾”

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