Features 1. **Sturdy and Durable**: These additional door locks are made of strong aluminum alloy, which is not easy to break or deform. When in the protective position, the rubber suction cups can firmly adhere to the ground, sufficient to resist forced entry by external forces. 2. **Easy to Carry**: This door reinforcement lock is lightweight and compact. It can be placed in a bag or pocket and accompany you at any time, becoming your loyal guardian. This two - in - one door safety device comes with an alarm function. Equipped with a sensitive vibration sensor and an 80 - decibel alarm accessory, it will keep you safe and sound an alarm once an intruder attempts to break in. 3. **Easy to Use**: Whether you are an adult or a child, you can easily use the door stop. Installation and removal only take a few seconds, and you can install this home security device without tools. In an emergency, you can simply lift it up to remove the lock easily. Precautions 1. Due to different lighting effects, the actual color may vary slightly from the picture. 2. Due to manual measurement, a deviation of 1 - 3 cm is allowed. Material Aluminum alloy Dimensions As shown in the picture Styles 1. Integrated door stop (standard version) 2. Integrated door stop (with alarm version) 3. Single suction cup door stop (standard version) 4. Single suction cup door stop (with alarm version) 5. Double suction cup door stop (standard version) 6. Double suction cup door stop (with alarm version) Package List 1 portable alarm door stop