| http://www.w3.org/ns/prov#value | - In an exemplary embodiment, the system alternates between minimum-power and full-power once every minutes.The system detailed in FIG. 7, including the battery power system, is optimally contained in a weather proof structure constructed of a material, such as wood, fiberglass, or plastic, that will not interfere significantly with the ambient magnetic and electric fields generated by the power lin
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