New open box The PetSafe Ultrasonic Indoor Bark Control System is a safe and effective way to stop excessive barking without the need for a collar or spray. This device activates through a dog's bark or can be manually controlled, and uses ultrasonic sound to deter barking. The low battery light and indicator make it easy to keep track of battery life, and there's also a limited lifetime warranty included. This product is ideal for dogs 5 lbs. and up, and the compact design makes it perfect for indoor use. Our small family business, Pets and Beyond, is an authorized retailer of the PetSafe brand and we pride ourselves on excellent service and fast shipping. Thank you for considering this product to help control your dog's barking behavior.