RP Series Thin Film Pressure Sensors DFRobot RP Series Thin Film Pressure Sensors are made of ultra-thin film with excellent mechanical properties, conductive materials, and nanometer pressure-sensitive layers. These durable sensors are designed to sense static and dynamic pressure at high response speed. The RP sensors come with a thin film and pressure-sensitive layer on the upper layer and a thin film and conductive circuit on the lower layer. These layers in the sensors are glued together with double-sided tape. The RP sensors convert pressure into resistance by connecting the disconnected circuit of the lower layer through a pressure-sensitive layer of the upper layer.