Stop an unwanted visitor from coming through the door regardless of whether you are in your home at a hotel or in a dorm room with this black door stopper alarm by Trademark Home Collection. Sensitivity settings including low medium and high will make you feel safe and secure anywhere you are. Avoid buying counterfeit products and transacting with unauthorized sellers. Look for our logo on the packaging for every one of our products. Trademark Home Collection is committed to providing the consumer with the absolute best price and value on all our products which we ensure by applying a rigorous Quality Control process. Trademark Home Collection is a registered trademark protected by United Staes Trademark law and will be vigorously defended.