A system for monitoring and distinguishing occurrences along a perimeter bounded by a plurality of piezoelectric cables. A first cross-correlator and a transmit baseband filter generates cross-correlated in-phase and quadrature-phase processed filtered baseband signals from an input signal and a second cross-correlator generates cross-correlated in-phase and quadrature-phase processed spread spectrum signals. A magnetic attractive force is produced between the first and second magnetic units to allow for co-rotation of the output shaft assembly with the input shaft assembly. These compositions have been experimentally tested in solid oxide fuel cell and proton exchange membrane fuel cell configurations.