Features 1. Our door stopper safety is a portable industrial strength door device that prevents accidental entry and provides protection when traveling at home or in a hotel. 2. Made of superhard materials, it has a small size and high strength, allowing you to feel at ease. In emergency situations, it can be easily removed by lifting it upwards. 3. Whether you are an adult or a child, you can easily use it. Place the bottom of the door panel under the door, directly below the door handle. Adjust the support legs to tighten the door stopper. Test the door and ensure that the door safety device is securely in place 4. Double protection: Once someone opens the door, the alarm barrier will sound immediately, scaring away bad people and helping to wake you up, giving you time to seek help. This is a great helper for you when you are on a business trip, traveling, or living alone. 5. Effective resistance to door prying: The door disruptor safely utilizes the lever principle to effectively resist forced door prying. Specification Product Name: Alarm Barrier Gate Device Material: Aluminum alloy Product Features: Portable and Durable Function: Block indoor doors Suitable door thickness: 5-35mm Product weight: 233 g Product size: 12 x 8.8 cm Package Include: Alarm gate blocker x1