Disclosed is a microelectromechanically tunable Fabry-Perot device and method of manufacturing tunable Fabry-Perot device and method of manufacturing. The system includes a user interface adapted to provide raw data information at least about one of a patient, the medical procedure, and a result of the medical procedure. A controller interprets the measured thermal conductivity and determines a level of scale deposition. In consequence of the inventive method, the entered character is protected as monitoring software can capture merely unreadable portions of the complete keypad image. The automation of the energy consulting and marketing process, mass customization, demand aggregation, and viral marketing reduce customer acquisition and component purchasing costs and reduce the price to consumers, creating new economically viable markets for environmentally friendly energy-related products and services. This receiver also comprises a threshold comparator circuit defining a reference threshold and connected directly to the terminals of the resonant circuit to compare the electric signal, not amplified, with the reference threshold and to activate said processing circuit only when the amplitude of the electric signal exceeds the threshold.