The PetSafe Wireless Fence Pet Containment System will allow your loyal companion to roam free and safely around the yard. The PetSafe wireless fence covers up to half an acre and is portable so you can easily take it wherever you go. With five levels of static correction, the PetSafe wireless fence gives a signal to your dog's receiver collar as a warning to not go any further. Plus, you can expand the PetSafe wireless fence to any number of dogs by purchasing additional receiver collars. For an easy and convenient way to keep your dog close by invest in the PetSafe Wireless Fence Pet Containment System.Features:Specs:Includes: