Stop an unwanted visitor from coming through the door regardless if you are in your home, at a hotel, or in a dorm room with this door stopper alarm by Stalwart. Sensitivity settings including low, medium, and high, will make you feel safe and secure anywhere you are. IMPORTANT: IMPORTANT: Avoid buying counterfeit products and transacting with unauthorized sellers. Look for our logo on the packaging for every one of our products. Stalwart 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. Stalwart is a registered trademark protected by U.S. Trademark law and will be vigorously defended. MULTIPLE LEVELS OF SENSITIVITY- Get alerted anytime someone opens the door to your room. With high, medium, and low sensitivity options, you can choose how much movement is required to set off the alarm, letting you feel safe and secure anywhere you go. DUAL FUNCTION- Equipped with a non-skid pad, this door wedge can keep any door from opening or closing. Place in front of a door and keep it from closing to permit easy entrance or place behind the door to stop it from opening. TRAVEL SIZE- Whether you are traveling or staying at home, feel safe wherever you go. Throw in any travel bag, and bring the sense of security you feel at home to any hotel or dorm room. PRODUCT DETAILS- Dimensions: 5.25 (L) x 1.6 (W) x 1.4 (H). Requires one 9-volt battery (not included). Includes: Sensitivity switch with low, medium, and high settings. On/Off switch. SATISFACTION GUARANTEED- Stalwart is committed to providing consumers with the absolute best price and value on our entire line of products. NOTE: This is an exclusive product of Stalwart and ONLY Door Alarm Stopper by Stalwart are GUARANTEED to be genuine.