If you already have your dog fence wire installed and need to replace your current dog fence transmitter and collar, you can use the PetSafe Stubborn Dog Radio Fence Without Wire. You can replace any brand of dog fence with this kit. Simply connect your wire to the transmitter then place the collar on your pet
The PetSafe Stubborn Dog Collar has four levels of correction plus vibration in the warning area for an added deterrent. Even dogs that resist training respond well to this system. With 4 higher-intensity settings, these harmless electrical stimulations work so effectively that most dogs will learn to stop in their tracks at the sounds of the early warning tone before any stimulation. Plus, its vibration option is ideal for hearing-impaired or senior dogs!