Feature:1. Easy to Use: Simply place the battery powered door stop at the bottom of any door, turn it on, and it's ready to work, with anti slip bottom, so you don't have to worry about it moving around.2. Loud Shrill Sound: With a very loud shrill sound, the 130 decibel alarm is sure to scare off intruders ensuring the safety of your residence or apartment.3. Dual Purpose: This product acts as a door stop alarm and a door stopper, high damping rubber bearing prevents the door from sliding and keeps intruders from entering.4. Compact and Portable: The door stop alarm's compact and lightweight design makes it easy to carry and a must have personal defense tool when traveling.5. Wide Application: Whether you are in a travel apartment or your own residence, our door stop alarm offers the best protection, providing peace of mind for safety and security.Specification:Item Type: Door Stop AlarmMaterial: ABS.Decibels: 130dBPower Supply: 3XLR44 coin cell battery (not included)Package List:1 xDoor Stop Alarm1 x Manual