Features_x000D__x000D_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._x000D__x000D_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._x000D__x000D_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_x000D__x000D_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._x000D__x000D_5. Effective resistance to door prying: The door disruptor safely utilizes the lever principle to effectively resist forced door prying._x000D__x000D_Specification_x000D__x000D_Product Name: Alarm Barrier Gate Device_x000D__x000D_Material: Aluminum alloy_x000D__x000D_Product Features: Portable and Durable_x000D__x000D_Function: Block indoor doors_x000D__x000D_Suitable door thickness: 5-35mm_x000D__x000D_Product weight: 233 g_x000D__x000D_Product size: 12 x 8.8 cm_x000D__x000D_Package Included:_x000D__x000D_Alarm gate blocker x1