FJZZHY Door Stop Security Alarm 120DB Portable Door Lock for Traveling Home Apartment Doorstop Safety Tools

Door stop security alarm Install the battery and place it under any door. When it is in the "open" state, when the door pressure is applied, it will emit a super loud alarm of 120db, and the door alarm will be triggered at the same time. It is light and small, easy to carry, easy to set up, and easy to use. Peace of mind at home or when traveling great for travel; ideal for bedrooms, hotels, apartments, dorm rooms, front doors, etc; peace of mind when traveling or working alone Size: 5.9*2.36*1.77inch. Net weight: 4.24oz(120g). Powered by: 1* 9V battery (Not Included). The volume of the alarm: 120dB. Three sensitivity: Low, Medium, High mean a vibration-sensing alarm note: If the gap between the bottom of the door and the ground is less than 0.5CM or more than 3.5CM after opening the door, and the ground is made of marble and other very smooth materials, it may cause the product to fail to operate normally