Door Knob Alarm: Your Entry’s Silent Sentinel

Safeguard your space with the TBOTECH Door Knob Alarm (AL-2). Picture a stranger testing your door—hang this on the inside knob, and a 120 dB siren erupts at their touch, exposing their intent before they step in.

Door Knob Alarm: Instant Intrusion Alert

This door knob alarm blasts a 120 dB siren—louder than a jackhammer—when anyone grabs the knob from outside. Hang it on any metal doorknob (wooden/composite doors with non-metal frames work too); vibration triggers it instantly. No wiring, no fuss—installs in seconds with a 9-volt battery (not included). At 4.25" x 2.25" x 1", it’s portable for home, travel, or motel stays.

Dual-purpose design shines: clip the chain to your wrist as a personal alarm—pull to unleash the siren if attacked—or use it as a sleepwalker deterrent, waking them before they wander. TBOTECH, with over 20 years of reliability, offers this protector with fast shipping and a 90-day guarantee. Pair it with a Sticky Gel Defense for Your Home for total security. Order your Door Knob Alarm now—unseen vigilance at your fingertips!

Features

• 120 dB Siren: Piercing sound unmasks intruders.
• Vibration-Sensitive: Triggers at the slightest touch.
• Portable Design: Hangs on knobs, clips to you.

Get your TBOTECH Door Knob Alarm today—peace of mind that roars!