Abstract: A portable device may include a housing sized and shaped to enclose: a power source, a wireless communication module including an antenna and associated transceiver circuitry coupled with the antenna to receive and transmit wireless signals, a human-interaction interface, a memory storing computer-readable instructions; and a processor in communication with the power source, the wireless communication module, and the memory. The housing may be sized and shaped to self-stand when placed at a location. The computer-readable instructions, when executed by the processor, may cause the portable device to: scan, using the wireless communication module, for ones of the plurality of wireless nodes within operating range of the wireless communication module, receive, in response to the scan, wireless-node data from responding ones of the plurality of wireless nodes, generate a user-interpretable signal based on the wireless-node data; and output, using the human-interaction interface, the user-interpretable signal.

Abstract: A wireless tracking device includes circuit components, a battery, and a circuit connecting the circuit components and the battery. The circuit components include a first wireless communication system, a processor, a memory or storage, and a first sensor operable to measure conditions of the wireless tracking device. The wireless tracking device is configured to attach to an overhead electrical line and detect failure events that are experienced by the overhead electrical line based on sensor data monitored by the wireless tracking device.