A door stop alarm has a dual as it can be used as both an alarm and a door stop. Prevents doors from sliding and unwanted intruders from entering, making it perfect protection for your home and when traveling. Our doorstop alarm is designed with three levels of sensitivity: High-Medium-Low. You can adjust it based on the Space between the door and floor and the type of flooring. It's Perfect for doors with floor Space between 0.6 and 1.2 inches, guaranteed to provide extra security in your home or . The door stop alarm is designed with a loud alarm setting that features a loud sound of 120 decibels that activates in the event of unauthorized entry. If someone tries to break in, the door stop will not only block it, but also sound an alarm to alert you. Please note that the volume level cannot be modified. Our doorstop alarm is powered by a 9V battery, ensuring a lifespan of up to one year with normal use. To maintain their effectiveness, we recommend replacing the batteries when the sound is minimized or disappears completely. (Battery not included in package.) Providing user convenience is at the core of our design. No installation required, simply place the alarm behind any door that opens inward. It's compact and , making it perfect for traveling or when living alone. ensuring it's a worry-free safety measure. Material: plastic+metal colour: Black+Silver Package Contents: 4 x Door Stop Alarm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.