The PetSafe Wireless Pet Containment System offers safety and portability, the new Instant Fence from PetSafe is the first electronic containment system with instant installation. If you can plug in a cord, you can install the Containment System: No unattractive poles to set up and no wires to bury. When your pet leaves the area, he receives a mild correction until he returns - which means its escape-proof. And since Instant system is completely portable, you can take it and your pet wherever you go. So your pet is safe, and your mind is at ease. Protect. Teach. Love.