The ability to effect a change in capacitance is not limited to one side of a capacitive touch element. The coupler portion of the tongue can pivot relative to the longitudinal axis, thereby forming an angle between the coupler portion and the longitudinal axis. Embodiments of the invention relating to the production of a cooling effect and the generation of electrical power, change the thermodynamic state of the system by extracting energy from a pressurized fluid. In view of the reductions achieved in process volumes, significant cost savings may be realized.