High-Decibel Alert for Maximum Security: This portable alarm door stopper features an 80dB high-decibel alarm that effectively deters intruders and immediately alerts occupants to potential threats, ensuring reliable protection. Adjustable and Durable Design: Equipped with an adjustable anti-theft jammer, this alarm door stopper fits most door types. Built with high-strength alloy, it ensures long-lasting durability and stability for enhanced security. Quick and Tool-Free Installation: No tools required-set up or remove the alarm door stopper for bottom of door in just seconds. Perfect for use at home, in hotel rooms, or while traveling. Vibration-Activated Alarm System: Designed with an advanced vibration sensor, the alarm triggers instantly when force or movement is detected, providing dependable safety for any door. Compact, Portable, and Battery-Powered: Lightweight and easy to carry, this portable alarm door stopper runs on two long-lasting button batteries, offering up to 3 months of standby time. Its compact design makes it ideal for travelers seeking quick and effective security solutions. Colour:red Material:alloy Package Contents: 1 * Portable Alarm Door Stopper Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.