2-in-1 Personal & Burglar Door Alarm – 120dB Dual-Mode with Pull Chain Activation, 9V Battery Powered
Original price was: $16.41.$13.95Current price is: $13.95.
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One alarm, two jobs. Carry it as a 120dB personal alarm that activates with a pull chain, or hang it on a doorknob and it goes off the second someone touches the door. Hotel rooms, dorm rooms, apartments — this little box does double duty.
- 120dB alarm is loud enough to be heard across a building or down a street
- Personal alarm mode activates by pulling the chain — instant attention-getter
- Burglar alarm mode hangs on any non-metallic doorknob and triggers on contact
- Runs on one 9-volt battery for reliable, long-lasting power
- Compact at just 4¼ x 2¼ x 1 inches — takes up almost no space
A Personal Alarm and a Door Alarm in One Device
Most personal alarms just make noise when you pull a pin. Most door alarms just hang on a knob. This one does both, and it switches between modes without any tools or setup. Traveling? Hang it on the hotel room door. Walking at night? Pull the chain and 120 decibels of attention hits the street. It’s one of those products that earns its spot because it actually does two useful things.
Who This Alarm Is For
Travelers who stay in hotel rooms and want an extra layer of security beyond the deadbolt. College students who want a door alarm for the dorm and a personal alarm for the walk home. People living in apartments who want a simple, no-installation alarm on their door. Anyone who wants a loud personal alarm without buying a separate device for each use.
Is This the Right Choice for You?
Choose this 2-in-1 alarm if you want:
- Both personal and door alarm in a single, affordable device
- A travel-friendly security option for hotel rooms and rentals
- 120dB volume that’s loud enough to get real attention
Consider something else if you need:
- A keychain alarm for everyday carry — this is a bit big for keys
- A louder alarm — check the 130dB options if maximum volume matters
How Both Modes Work
In personal alarm mode, you carry it with you and pull the chain when you need attention. The 120dB alarm fires off instantly — loud enough to startle an attacker and get everyone within earshot looking your direction. That kind of attention is usually enough to make someone back off.
In door alarm mode, you hang the device on any non-metallic doorknob. The sensor detects when someone touches or jiggles the door handle and the alarm blasts immediately. No wiring, no apps, no Wi-Fi — just hang it and go to sleep. It’s especially useful in hotels, Airbnbs, and dorm rooms where you can’t install permanent security.
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 alarm runs on one 9-volt battery, which is widely available and easy to replace. The unit measures 4¼ by 2¼ by 1 inch and weighs 0.23 pounds. Black housing that’s low-profile and doesn’t attract attention on a doorknob. Comes with the pull chain included. No installation, no setup — just add a battery and it’s ready to go.
Two functions, one device, under twenty bucks. Keep it by the bed when you’re home and throw it in your bag when you travel.
Frequently Asked Questions
Why does it only work on non-metallic doors?
The door alarm mode uses a sensor that detects vibration on the doorknob. Metal doors and knobs can interfere with the sensitivity. It works great on standard interior doors, hotel room doors, and most apartment doors. If you have a metal door, test it before relying on it.
How loud is 120 decibels?
120dB is louder than a car horn and roughly equivalent to a thunderclap. It’s definitely loud enough to wake you up, alert neighbors, and make an intruder reconsider their choices. You’ll hear it through walls, doors, and down hallways.
How long does the 9-volt battery last?
In standby mode, a quality 9-volt battery will last for months. The alarm only draws significant power when it’s actually sounding. Keep a spare battery on hand, especially for travel, and you’ll always be ready.
| Decibles | 120 db |
|---|---|
| Battery | One 9 Volt |
| Color | Black |
| Included | Pull Chain |
| Weight | 0.23 lbs |
| Dimensions | 4 ¼" x 2 ¼" x 1" |
Additional information
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