Door Alarm - Instant Security Protection

Why Choose the Door Knob Alarm?

This door knob alarm from TBOTECH delivers a 120 dB siren—louder than a jackhammer—when triggered by a touch on the doorknob, instantly alerting you and deterring intruders. Its vibration-sensitive design detects attempts to enter, ensuring rapid response. Measuring 4.25" x 2.25" x 1" and powered by a 9-volt battery (not included), it hangs on any metal doorknob (or non-metallic doors with non-metal frames) without wiring.

The versatile security device doubles as a personal alarm—clip the chain to your wrist and pull to activate the siren for on-the-go safety. Compact and portable, it’s perfect for homes, hotel rooms, or temporary accommodations, offering reliable protection wherever you are.

Key Features of the Door Alarm

• 120 dB Siren: Piercing sound alerts you and deters intruders instantly.
• Vibration Trigger: Activates with the slightest doorknob touch for rapid response.
• Dual-Purpose Design: Functions as a door alarm or personal safety device.
• Easy Installation: Hangs on doorknobs in seconds, no wiring needed.
• Portable Size: Compact 4.25" x 2.25" x 1" for home or travel use.

Who Uses This Security Device?

This alarm is ideal for versatile security needs:

• Travelers: Secure hotel or motel rooms with an instant alert system.
• Elderly Residents: Simple protection for home or personal safety.
• Families with Sleepwalkers: Prevent wandering with a loud alert system.

Why Buy from TBOTECH?

TBOTECH delivers premium security solutions with exceptional benefits:

• 90-Day Money-Back Guarantee: Shop with confidence.
• Fast Shipping: Orders ship promptly with tracking.
• Expert Support: Over 20 years of experience in safety products.

Related Products

Explore more security options:

• Door Stop Alarm – 120 dB wedge alarm to block and secure doors.
• Sticky Gel Defense for Your Home – A non-lethal gel spray for added home security.