2-in-1 Personal and Burglar Door Alarm 120dB — Dual-Function Portable Security, Motion-Activated Door Knob Sensor, Pull-Chain Personal Alarm, 9V Battery Powered, Compact Travel Size
$9.31
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Two missions, one compact device. The 2-in-1 Personal and Burglar Alarm pulls double duty — hang it on any non-metallic door knob and it automatically triggers a 120dB alarm when someone touches the handle. Carry it with you and pull the chain to deploy it as a personal safety alarm. One tool, two layers of security.
- 120dB alarm is loud enough to deter intruders and attract immediate attention
- Door knob mode automatically activates when an intruder touches the handle
- Pull-chain mode converts it to a portable personal alarm in seconds
- Compact design at 4.25" x 2.25" x 1" — ideal for travel and everyday carry
- Powered by one 9-volt battery for reliable, long-lasting operation
Dual-Purpose Security That Travels With You
Preparedness means having the right tools for the situation — and situations change. The 2-in-1 Personal and Burglar Alarm adapts to your environment. At home or in a hotel, it guards your door. On the street, it becomes a personal alarm in your hand. One device, zero gaps in your defense plan.
Who This Alarm Is For
Travelers who sleep in hotels, Airbnbs, and unfamiliar rooms will find immediate value in the door knob mode. College students in dorm rooms, nurses staying in on-call rooms, and anyone who needs temporary room security without permanent installation will appreciate how quickly it deploys.
As a personal alarm, it’s built for joggers, evening commuters, and anyone walking alone who wants a loud deterrent within reach. The pull-chain activation is simple enough to use under stress — just grab and pull.
How Both Modes Work in the Field
In door alarm mode, you hang the unit on any non-metallic door knob. The built-in sensor detects when someone touches or turns the knob, instantly triggering the 120dB alarm. There’s no delay, no setup, and no installation — just hang and arm. This makes it ideal for securing temporary spaces where you can’t install hardware.
In personal alarm mode, the attached metal chain serves as the activation pull. Keep the alarm in your pocket or bag with the chain accessible. One firm pull and the 120dB siren fires, drawing attention from everyone nearby and creating a deterrent that most attackers won’t stick around to face.
Is This the Right Choice for You?
Choose the 2-in-1 Alarm if you want:
- Portable door security with zero installation for hotels and dorms
- A personal alarm you can also use as a room guardian
- Reliable 120dB alert in a compact, travel-ready package
Consider something else if you need:
- A physical barrier at the door — a door stop alarm provides wedge resistance
- A dedicated personal alarm with keychain attachment for everyday carry
Quick Comparison: How Does the 2-in-1 Alarm Stack Up?
| Feature | 2-in-1 Alarm | Door Stop Alarm | Keychain Alarm | Motion Sensor |
|---|---|---|---|---|
| Volume | 120dB ✔ | 120dB ✔ | 120-130dB ✔ | Varies |
| Door Protection | Knob sensor ✔ | Wedge + alarm ✔ | No | Motion zone |
| Personal Carry | Pull chain ✔ | No — stationary | Keychain ✔ | No |
| Portability | Pocket-size ✔ | Portable | Keychain ✔ | Plug-in |
| Physical Barrier | No | Wedge block ✔ | No | No |
| Best For | Dual use: door + personal | Hotel/dorm doors | Walking, running | Permanent install |
Practical Details
The 2-in-1 alarm measures 4.25″ x 2.25″ x 1″ and weighs 0.23 lbs — compact enough for a suitcase, gym bag, or jacket pocket. Runs on one 9-volt battery (not included). Black housing with pull chain and door knob hook. No tools or installation required for either mode. Made by Safety Technology.
Secure your space and your safety with one versatile device — add the 2-in-1 Personal and Burglar Alarm to your protection toolkit today.
Frequently Asked Questions
Does the door alarm work on metal door knobs?
The door alarm is designed for non-metallic doors and door knobs. On metal knobs, the sensor may not function correctly because the conductive surface can interfere with the touch-detection mechanism. For metal doors in hotels or commercial buildings, consider pairing it with a door stop alarm for reliable room security.
How long will the 9-volt battery last?
In standby mode, a quality 9-volt battery will power the unit for several months of regular use. The battery drain is minimal when the alarm isn’t actively sounding. Keep a spare battery in your travel kit and replace it when the alarm volume starts to weaken — a fading alarm is a sign it’s time for a fresh battery.
How do I turn the alarm off once it sounds?
In door mode, simply remove the unit from the door knob. In personal alarm mode, push the chain back into the unit to silence it. The alarm is designed to be loud and persistent — it won’t stop on its own until you deactivate it, which is exactly what you want in a genuine emergency.
| 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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