The boundary wire is typically buried 6 inches below the surface. This wire receives and transmits a harmless, state of the art, computer digitally modulated signal from the OT-300 Transmitter encoded, so it doesn’t interfere with your neighbor’s system and theirs will not interfere with yours. The Pet Stop Receiver never falsely activates. Your dog will always be located safely in your yard 100% of the time. Because of our technologically advanced modulations processors and duel functioning Pet Stop dog receivers, your family pet will NEVER experience a false activation of his collar due to an aberrant signal. The wire is installed around the entire area in which you want to contain your pet.