Portable Anti-Theft Alarm with Smart Sensor for Doors, Easy to Install, Secure for Travel, Hotel or Home

【High-Sensitivity Alarm Sensor】The Flintronic door stopper features a loud 80-decibel alarm. Equipped with a high-sensitivity smart sensor chip, it immediately sounds an alarm for up to 5 seconds upon detecting vibration. Two built-in high-capacity CR2032 button batteries provide ultra-long standby time, ensuring lasting peace of mind. 【Innovative Design】This metal lever door stopper adopts an integrated triangular design, intelligently applying the principles of physics. It cleverly directs the door's pushing force towards the ground, shifting the center of gravity and effectively achieving a stable door-holding effect. The non-slip rubber plate on the bottom provides strong grip and stability on various floor surfaces. 【Durable and Lightweight】This integrated anti-theft door opener is made of lightweight aluminum alloy. It not only boasts excellent strength and durability but is also lightweight and easy to carry. It weighs only 252g, takes up minimal space, and easily passes through various security checkpoints. It also comes with an exclusive storage bag so you can take the safety belt with you. 【Easy to Install】 This door stopper is quick and easy to install, taking only three seconds to install and remove. It is specially designed for inward-opening doors and requires no drilling or tools. Simply place the door stopper in the gap between the door and the floor, then tighten the bolts clockwise. (Note: The gap between the door and the floor should be between 5 and 25 mm) 【Security Guard】 With this retractable door alarm, you don't have to worry about unwanted guests entering your home, whether you're staying in a hotel, traveling, living alone, or on a business trip. When living alone, you don't have to fear any unusual movement outside the door. It's like having a private bodyguard you've hired, allowing you to sleep peacefully until dawn. Features: 1. The alarm has a high-pitched 80-decibel alarm. Once triggered, the alarm will sound for 5 seconds. 2. Lightweight and portable, equipped with a dedicated carrying bag. 3. Sturdy aluminum alloy casing, beautiful and elegant. 4. Anti-slip rubber base design, strong grip, not easy to slip. Product parameters: Material: Aluminum alloy; Color: Red; Applicable door thickness: 5-25 mm; Product weight: 252 g; Power supply: 2 CR2032 batteries; Package list: 1 * Door stop alarm, 1 * Sensor, 4 * Batteries, 1 * Drawstring bag, 1 * Instruction manual