The Smart Navigator 2.0 continuously monitors the overhead line and provides measured values and fault information to the control room without the need for a pole-mounted box. The indicator is a self-powered sensor, which harvests its power supply from the overhead line. Power is stored in a rechargeable lithium cell for long periods of time with low or no-load current. A set of three units, consisting of one master and two satellites units, exist at each monitored location.