A damper is shown for damping the movements of a valve spring in an engine. In some embodiments, group identifiers are partitioned into different pools and assigned to wireless communication devices based on their mobility. Thereafter, there is formed a single-layer wiring connecting the control gate to the sources or drains of the nMOS transistor and the pMOS transistor via the plural contact plugs. The signals may be processed either at the sensors or at the processing system to form average or peak power determinations. The particular customer node is automatically configured based on that configuration data.