1) You'll set your pet's boundaries by turning a knob on the transmitter to create a wireless circular boundary for your pet.
2) Once the boundary is set, the transmitter sends radio signals to the receiver collar your pet wears. You'll teach your pet to listen for a warning tone or vibration as he nears the boundaries of the yard.
3) If your pet continues, he will receive a safe but surprising static correction from the collar, reminding him to stay in the yard.