The PetSafe® Wireless Containment System allows you to create a safe and secure 1/2 acre circular boundary around your yard without the hassle of burying wire or installing a physical fence. To set up, simply place the Wireless Containment System transmitter indoors and adjust the dial to cover the perfect size area for your dog. This portable system sets up in 1-2 hours so you can easily take it with you when you go camping and more. This wireless fence comes with the PetSafe® Wireless Pet Containment System Receiver Collar. The battery-operated receiver collar features a tone-only mode for training, plus 5 adjustable levels of correction depending on your dog’s temperament. The collar adjusts to fit neck sizes between 6-28 inches and is recommended for pets who weigh 5 pounds and up. With the purchase of additional PetSafe® wireless fence receiver collars, the Wireless Containment System will contain an unlimited number of pets with a single system. Trust PetSafe® to help keep your pet healthy, safe and happy.