Doorstopper with 100 dB alarm

Your ultimate security system. You simply have to put the door stopper with alarm in front of the door and it is already ready. As soon as the door is opened, the alarm will sound (loudly). No installation required, the alarm is ready to use! By loosening the screws at the bottom with a screwdriver, you can easily change the batteries. Specifications: Height: 43 mm Length: 16.2 cm Width: 4.2 cm 100 dB alarm sound With anti-slip bottom layer 3x AAA batteries, not included