The R300 Series temperature sensor (photo, p. 61) is targeted for use in potential exhaust gas recirculation (EGR) applications where operating temperatures can reach 300°C (572°F). The R300 Series uses RTD (resistance temperature detector) technology and features a robust, stainless-steel, closed-tip design to enhance reliability in aggressive environments. — Honeywell Sensing and Control, Morristown, N.J.