![Door Stop Alarm](http://selfshieldus.com/cdn/shop/products/doorstopalarm_{width}x.jpg?v=1635388274)
Self Shield USA's door stop alarm has a sensor that goes off by movement with adjustable sensitivity that will activate the alarm if it's tampered with. On/off switch is on the back of the alarm and includes a low battery indicator light. Uses one 9-volt battery (not included).