Portable Door Security Lock, Door Jammer

Instant Alarm Protection – Sleep Soundly, Anywhere

Protect your space with the high-sensitivity alarm built into this industrial-strength portable door jammer. Designed to alert you instantly at the slightest vibration, this device adds a critical layer of safety to your home, office, school, or hotel room. Whether you're a frequent traveler or a concerned homeowner, rest easy knowing that your sleep is guarded against forced entry.

Upgraded Strength – Built to Block, Built to Last

Our upgraded door jammer features a body made from thick, anti-crack aluminum alloy, delivering long-lasting durability and peace of mind. The base is crafted with high-quality, wear-resistant rubber, ensuring a powerful grip on all floor types. Its smart design redirects force to effectively prevent door breaches, making it your dependable partner for stronger home security.

Compact, Tool-Free, and Travel-Ready

Stay safe on the go with this lightweight, compact door stopper that fits easily in your bag or pocket—plus, we include a bonus storage pouch for easy transport. Designed for quick, tool-free setup, it fits most door sizes (gap: 0.2–1.38", thickness: 1.18–1.97") and offers fast release in emergencies. Ideal for travelers, renters, and anyone who wants portable security in seconds.

Product Specifications

Color: Red
Material: Zinc Alloy
Weight: 8.2 oz (Total package: 12.7 oz)
Product Dimensions: 5.5 x 4.3 x 2 inches

Alarm Specifications

• Battery Type: 2 × CR2032 (included)
• Alarm Volume: 80 decibels
• Indicator Light: Flashes every 6 seconds
• Battery Standby Time: Up to 3 months
• Alarm Duration: Beeps for 5 seconds per trigger

Installation Instructions

1. Align the jammer under the door handle and insert it

2. Tighten the bolts clockwise to secure it

3. Turn on the alarm switch

4. Test by trying to open the door from the inside