Keep every pet safely within their boundaries with the PetSafe Guardian GPS Dog Fence Add-A-Dog Collar, designed as a seamless add-on for the Guardian GPS Dog Fence System. Featuring advanced AccuGuard technology, this collar uses a powerful combination of GPS satellite data, motion detection, and intelligent software to create one of the most reliable virtual containment solutions available today. Whether you’re at home or on the go, this accurate supplementary collar ensures your dog’s safety with technology that minimizes false corrections and adapts to your pet’s movements in real time. This collar allows you to expand your Guardian GPS system to include up to eight pets, with each dog getting their own customizable collar. The tone, vibration, and up to 10 levels of static correction give you flexibility to choose the correction style best suited to your dog’s temperament, making it a versatile training equipment option. Its dual functionality system not only reinforces boundaries but also supports safe and humane training. Durability and comfort are built in. The waterproof collar design can handle splashes, rain, and muddy adventures, while still offering a secure and comfortable fit for daily wear. Since 1988, PetSafe has been driven by a simple belief: safe, healthy pets lead to happier lives for pets and their families. For over 25 years, we've been dedicated to enhancing the lives of pets and the people who love them, treating every pet as a cherished family member and delivering life-changing innovations designed to enrich every moment. With U.S. roots and a global reach, our vet- and trainer-recommended products are built for every pet and backed by exceptional customer support. From backyards to dog parks, we're on a mission to create fields of joy for happy, healthy, and safe pets.