Not a rocket scientist? Don't sweat installation is a snap in only three basic steps. Smart Dog® systems consist of a buried yard wire connected to an indoor radio transmitter. When the dog approaches the wire, a special collar worn around his neck delivers a brief, totally harmless correction that discourages him from crossing the boundary. Corrections typically become less frequent as the dog learns his new limits. Patented run-through protection is a standard feature on all Smart Dog® systems.