4.9 | 10,000+ Reviews

SentryGuard Pro

SentryGuard Pro

check_circle Ear-piercing 120dB intruder alert

check_circle Wedges doors firmly shut

check_circle Non-skid base prevents sliding

5 units left at this price
 
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SentryGuard Pro

SentryGuard Pro

$30.00
$30.00 $49.00
SAVE 38% Sold out
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I never stay in a hotel without this anymore; the peace of mind is unbeatable. The alarm is ear-piercingly loud and the wedge holds the door firmly shut.

Sarah J.

How does the alarm actually work?

The device is a dual-function security tool. When placed behind a door, the wedge-shaped design physically blocks the door from opening. If an intruder applies pressure, the metal sensor plate is depressed, immediately triggering a powerful 120dB siren to alert you.

Does it work on all floor types?

Yes. The unit features a non-skid pad on the base that prevents the alarm from sliding. This allows it to work effectively on various surfaces, including tile, wood, and carpet.

What kind of battery does it need?

The alarm is powered by a single 9V battery. Because there is a dedicated power on/off switch, you can preserve the battery life when the device is not in use.

How loud is the siren?

The alarm produces a high-pitched 120dB siren. This volume is designed to wake you up and provide enough noise to scare off an intruder or alert neighbors.

Can I adjust how sensitive the alarm is?

Yes. There is a sensitivity switch on the side with three levels: High (H), Medium (M), and Low (L). This allows you to adjust the amount of movement or vibration required to trigger the siren.

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See It In Action

    Stop Intruders Before They Enter

    Unexpected break-ins are a leading cause of home security anxiety. Our heavy-duty door stop alarm wedges firmly under any door, instantly blocking entry and sounding a piercing 120dB siren to keep you safe every time you lock up.

    Why Homello Outperforms Every Other Option

      Others
    works on all floor surfaces
    adjustable sensitivity switch
    powerful 120dB alarm siren
    no installation or wiring
    physical entry barrier

    What Our Customers Are Saying

    • Total peace of mind for solo travel

      This security duo is a must-have for anyone traveling alone. The portable lock is solid and fits standard doors without any tools. The 120dB siren is incredibly loud, and the non-skid pad keeps the wedge firmly in place to block entry.

      Emily S. — Verified Purchase

    • Better than my apartment's deadbolt

      I feel so much safer in my ground-floor apartment with this alarm behind the door. It’s easy to set up with a 9V battery, and the sensitivity switch lets me adjust exactly how much movement triggers the siren. The 120dB alert is loud enough to wake me and alert neighbors.

      Jason M. — Verified Purchase

    • Simple, reliable, and portable security

      I love how compact this set is for hotel stays. The alarm acts as a physical barrier, and the 120dB siren is piercingly loud. It works perfectly on both my hardwood and carpet floors thanks to the high-grip base that prevents sliding.

      Sarah L. — Verified Purchase