door stopper alarm

door stopper alarm/alarm/security alarm:Powerful 135 DB alarm with on-off switchCompact and lightweight - Great for travelWedge-shaped design and non-skid pad on the bottom of unit prevent door from openingUse it when you are out, when you are alone, or when you are traveling.Good for Dormitory rooms and hotel rooms.No installation requiredRequires1pc 6F229Vbattery (included)If an intruder attempts to open the door, the wedge-shaped design and non-skid pad on the bottom of the unit will prevent it from opening and activate a alarm, which will scare off the would-be intruder and alert you to the attempted entry.