An adapter for use with existing network tap modules to be received by a housing that supports hot-pluggable modules. A bar core in the chambers has solenoids rotatably mounted thereon. The system can be used for the maintenance of alpine ski tracks and cross-country ski tracks, even in an underbrush trail, and allows setting a track on any type of snow. The different strains cause the workfunction shift differently in the first and second portions of the workfunction material layer, thereby providing devices having multiple different workfunctions.