Disclosed is a wiring device that can be equipped with at least one connection module and is provided with a contacting device. The process comprise subjecting the polyamide to liquid-extraction at a temperature which is above the boiling point of the liquid at atmospheric pressure said liquid containing water in an amount of at least 80 percent relative to its weight. A feedback system, operatively connected to the contact pad and the sensor, provides the subject or screener with at least one of a visual signal and an audio signal to indicate whether requisite pressure was applied to the contact pad. Furthermore, the pair of flanges and the retention strap allow the passage of fluid to the distal tissues that the native fluid passageway is supplying. The noise canceller uses a first filter to cancel noises.