XENSIV™ - TLE4959-5U-R differential Hall speed sensor with direction detection for transmission applications The Infineon XENSIV TLE4959-5U-R is an integrated differential Hall speed sensor designed for transmission applications. It provides information about rotational speed and direction of rotation to the transmission control unit. The sensor features a sophisticated algorithm that actively suppresses vibration while maintaining excellent airgap performance. Additionally, it comes in a RoHs compliant four-pin package, qualified for automotive usage.