The PetSafe Basic In-Ground Fence creates a custom play area for your pet outside. Simply bury the boundary wire around the perimeter of your space and place a transmitter within your home. Your pet then wears the included receiver collar that emits a warning beep and then a safe static correction if your pet decides to cross the boundary. Installation can be done in a weekend, and training can be completed in as little as two weeks. Most pets learn their boundaries quickly and begin to enjoy their new play area. As your family grows, you can add an unlimited number of pets with additional receiver collars.