Stun Master 2-in-1 Personal Alarm and Door Burglar Alarm 120dB – Keychain Pull-Chain Activation, Door Knob Alert, 9V Battery, Compact 4.25″ x 2.25″ Design

SKU: AL-2
Categories:

$10.95

Buy with Confidence
Covered by a 30-Day Money Back Guarantee. If it's not right for you, returns are easy and hassle-free.

Secure Checkout - Satisfaction Guaranteed - Money Back Guarantee

Secure checkout • 100% Satisfaction Guaranteed • 30 Day Money Back Guarantee • Easy Returns • Fast Customer Support

One alarm that does two jobs. Hang it on a door knob and it goes off if anyone touches it. Pull the chain when you’re out walking and it works like a personal alarm. Pretty handy for the price.

  • 120dB siren — loud enough to be heard from a distance and startle anyone nearby
  • Door knob mode — hang it on any non-metallic door; sounds automatically when knob is touched
  • Personal alarm mode — pull the metal chain to activate instantly, no buttons to fumble with
  • Compact size — 4¼” x 2¼” x 1″, weighs under a quarter pound, easy to carry or stash
  • Simple power — runs on one standard 9V battery, nothing fancy to deal with

Two Alarms in One Small Package

Most people want something simple — something that works without a lot of setup or thinking. This little alarm does that. Hang it on a door knob before bed or when you’re in a hotel room, and it sounds the moment someone touches the knob. Take it off in the morning and clip it to your bag or keys as a personal alarm. One device, two uses, about the size of a TV remote.

It runs on a standard 9V battery and weighs less than a quarter pound, so it’s genuinely easy to keep around. A lot of safety gear ends up in a drawer because it’s bulky or complicated. This one doesn’t have that problem.

Who This Personal Alarm Is For

College students are probably the most obvious fit — door alarms are handy in dorms where you don’t always know who might walk in. Same goes for anyone in an apartment with thin walls and a shared hallway.

Travelers who stay in hotels or Airbnbs would get good use out of it too. Even with a deadbolt, a door knob alarm adds another layer without any installation or tools. Just hang it and go to sleep.

The pull-chain personal alarm side is useful for dog walkers, joggers, and anyone who commutes on foot at odd hours. You’re not looking for a fight — you just want to make noise and draw attention if something feels wrong.

Is This the Right Choice for You?

Choose this 2-in-1 alarm if you want:

  • A door alarm for hotels, dorms, or rental properties without any installation
  • A personal pull-chain alarm for walking, running, or commuting
  • Something lightweight and affordable you’ll actually keep on you

Consider something else if you need:

  • A permanent home security solution with sensors on multiple entry points
  • A louder standalone personal alarm with a dedicated wrist strap

How It Works

The door knob mode is straightforward — loop the alarm over any non-metallic door knob and the internal sensor trips the moment the knob moves. No wiring, no app, no Wi-Fi. Just hang it and it’s armed. That’s the kind of simple that actually gets used.

For personal alarm mode, you hold the body and pull the metal chain. The 120dB siren fires immediately. To stop it, you reinsert the chain. It’s the same basic mechanism used on most keychain personal alarms — simple and reliable because there’s not much to go wrong.

120 decibels is genuinely loud. For reference, that’s about the volume of a jackhammer at close range. Tested mine in the garage and it was obnoxious. That’s the point.

Quick Comparison: How Does This 2-in-1 Alarm Stack Up?

Feature 2-in-1 Door/Personal Alarm Standalone Personal Alarm Door Stop Alarm Window/Door Sensor Alarm
Sound Level 120dB ✓ 120-130dB ✓ 120dB ✓ 100-120dB
Door Protection Yes ✓ No Yes ✓ Yes ✓
Personal Carry Yes ✓ Yes ✓ No No
No Installation Yes ✓ Yes ✓ Yes ✓ Partial
Price Range Budget ✓ Budget ✓ Budget Budget–Mid
Best For Travel + daily carry combo Joggers, commuters Hotel door security Permanent home setup

Practical Details

Size is 4¼” x 2¼” x 1″ and it weighs 0.23 lbs — light enough to forget it’s in your bag. Runs on one 9V battery (not included — worth grabbing one when you order). Works on non-metallic door knobs only. Includes the pull chain for personal alarm mode. Color is black.

Simple, affordable, and actually useful in two different situations. If you want one thing that covers door security at night and personal protection during the day, this is an easy call.

Frequently Asked Questions

Will this work on hotel room doors?

Yes, as long as the door knob is non-metallic, which covers most hotel room doors. Just loop the alarm over the knob before bed. If the hotel uses a lever-style handle instead of a round knob, it may not hang properly — in that case a door stop alarm might be a better fit for travel.

How do I stop the alarm once it goes off?

For door knob mode, remove the alarm from the knob. For personal alarm mode, reinsert the metal pull chain into the device. Both methods stop the siren immediately. It’s designed to be simple to deactivate so you’re not stuck dealing with a blaring alarm in an awkward situation.

What battery does it take and how long does it last?

It uses one standard 9V battery. Battery life depends on how often the alarm sounds — in standby mode watching the door, a 9V can last quite a while. Most people find they replace it once or twice a year with normal use. Keep a spare 9V around and you’re set.

Is 120dB loud enough to actually be effective?

120 decibels is legitimately loud — comparable to a rock concert or a power saw at close range. It’s enough to startle someone, wake people nearby, and draw attention. It won’t stop a determined person on its own, but that’s not really the point. The goal is noise and attention, and 120dB does that well.

Decibles120 db
BatteryOne 9 Volt
ColorBlack
IncludedPull Chain
Weight0.23 lbs
Dimensions4 ¼" x 2 ¼" x 1"

Additional information

Related products