Door Stop Privacy Alarm The Door Stop Privacy Alarm can be placed under your door to trigger an alarm if someone tries to open that door. This makes the unit perfect for apartments, boats, offices, bedrooms, or closets. No installation required. Batteries not included. PRODUCT SPECS Operates on a single 9 Volt Battery (Not Included) Adjustable Sensitivity Vibration Sensor No Installation Required Push this door stop alarm under your door and set it This unit is perfect for apartments, boats, offices, bedrooms or closets
