Door Blocker Alarm Door Top Door Stopper Hotel Home Door Stopper Girls Travel Alone Door Stopper Features: [Dual Function]Can be used as a door stop alarm and door stop to keep the door from sliding and bad guys from entering. Can be used at home or when traveling. [Cycle alarm function]Each time the alarm is triggered, it will automatically stop after 30 seconds and re-enter the alert state. [Alarm]: The door suction alarm is in the "ON" state. Once someone tries to block the door, the door suc