The boundary wire for robotic lawn mowers performs a fundamental task – defining the area within which your robotic lawn mower should operate. The boundary wire for an Automower® is easily connected to the AR and AL terminals of the charging station after being placed along the lawn's borders. Once the boundary wire is laid and connected, the Automower® stays within the defined area and mows your lawn. The boundary wire is a signal wire, and the same type of wire is also used as a guide wire, utilized by Husqvarna, GARDENA, and other brands to help the robotic lawn mower quickly and easily find its way back to the charging station.