KERUI Upgraded Door Stop Alarm with Portable Door Lock, 120dB Siren Security Door Stopper Wedge Alarms for Travel Hotel Home Apartment, Door Stopper Alarm with 3 Levels Sensitivity (Pack of 5) - Door Stopper Alarm & Door Locker

• 【Dual Function Doorstop Kit】-The door stopper alarm in the "ON" status, once someone tries to break in, the door stopper will obstruct and make a loud alarm with 120 dB (volume can not be adjusted) to alert. And the portable door lock provides you with dual protection, preventing unsafe external entry, greatly improving the security of you and your family. 【Non-slip Door Stopper】-The door stop alarm in "off" status, it can be used as common silicone base door wedge. Anti-slip design makes the door not easy to be pushed, so it can maximize your safety. 【Adjustable Sensitivities】-There are high-medium-low levels with an adjustable sensitivity switch on the stopper side, you can adjust according to the gap between your door and floor and the type of flooring. 【Compact and Portable】-Small size, light weight, easy to take. You can carry them as a security guarantee for your travel or business trip. Enjoy the cheerful feeling throughout the journey. 【Easy to Install】-Each door stop alarm is powered by a 9V battery (not included). No need to use tools to install, just simply place the stopper under door (For inward-opening doors only). The gap between the door and the floor should be 10mm (0.39 inch) to 35mm (1.38 inch)., Manufacturer: KERUI