Ensure your peace of mind with our travel door alarms at The Blue Luna. Designed to enhance your safety, these alarms are perfect for use anywhere you travel, whether it's hotels, cabins, or Air BNB's. Compact and easy to use, each alarm operates with a 9-volt battery to provide reliable security. At The Blue Luna, we prioritize your safety with self-defense keychains and accessories tailored for women and girls. Keep your travels worry-free and enjoy the added protection and confidence our travel door alarms provide. 9 Volt battery not included.