Electric "shock" fence to prevent dogs from digging, knocking down, or even going near your fence. Comes with over 300 ft of wire, control console, plug, collar (two CR2032 batteries NOT INCLUDED), collar manual and collar tester tool. Works great! I dont need it because my dogs are now trained not to mess with my fence anymore! Understand that this isnt brand new, but works as well as it ever did. Normally these run well over $100. Dont let your sweet pets get out and lose them! Once the wire is set up in a circuit, it emits a signal depending on the range you select. Collar will emit a warning beep to let the pups know they are getting too close. They will get a very small shock if rhey go too far, but usually only the first time. More scary than painful. From then on, the beep is enough for them ro back off.