Petsafe Instant Fence - Offering 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 Instant Fence: no unattractive poles to set up and no wires to bury. Instant Fence uses a constant radio signal to create a "stay zone". When your pet leaves the area, he receives a mild correction until he returns.
Since Instant Fence is completely portable, you can take it and your pet wherever you go. So your pet is safe, and your mind is at ease.