Certain exemplary embodiments described herein comprise a method comprising a plurality of activities comprising: discriminating an arcing condition from a non-arcing broadband signal, and, in response to detecting an arcing condition, outputting a trip signal to a circuit breaker controlling a predetermined alternating current circuit associated with the arcing condition. The module includes a circuit board on which an upper sensor and a lower sensor are mounted, an upper lens and a lower lens disposed on the upper sensor and under the lower sensor, respectively, and a housing fixing the upper lens and the lower lens spaced apart from the upper sensor and the lower sensor, respectively. These properties are provided, at least in part, by the diffractive profiles of the invention, often having subtlety shaped echelettes with appropriately curving profiles. One set of images has regions of interest, and the other set of images is without regions of interest. A first buffer unit electrically coupled to the load applies an auxiliary power to the load based on usage electric energy of the load.