The PetSafe Wireless Containment System allows you to create a secure 1/2 acre circular boundary around your yard without the hassle of burying wire or installing a physical fence. Simply place the Wireless Containment System transmitter in a weatherproof location, plug into an outlet and adjust the dial to cover the perfect size area for your dog. Coverage can be personalized from 5 to 90 feet in all directions from the base unit or up to 180 feet across. This portable system sets up in 1-2 hours so you can easily take it with you when you go camping or go on vacation. This Wireless fence comes with the PetSafe Wireless Pet Containment System Receiver Collar. The battery operated collar features a tone only mode plus 5 adjustable levels of correction depending on your dog's temperament. With the purchase of additional PetSafe Wireless fence collars, the Wireless Containment System will contain an unlimited number of pets with a single system. Kit Includes: Transmitter with power adaptor (Power adaptor images for reference only, actual adaptor appearance may vary), Receiver with adjustable collar, 50 training flags, Test light tool, Long contact points, Contact point wrench, and 1 pre-installed and 2 additional easy-to-install PetSafeRFA-67D-11 batteries