An electromagnetic device includes a core and a coil in the space between a central section and an outer section of the core and spaced inwardly of an open side of the core such that the coil is completely recessed within the core. The present invention provides a hydrocarbon composite electrolyte membrane for a fuel cell, the hydrocarbon composite electrolyte membrane including at least one composite electrolyte membrane layer having a structure in which graphene nanostructures are impregnated into a hydrocarbon electrolyte membrane. Further, the resilient deflection member may be the exterior member itself or the housing itself. Extra banks of crossover switches may be added to provide redundancy and load-balancing capabilities to the system. The asset may be stored with the re-encoded loudness setting.