XENSIV™ - TLE4959-5U-SP magnetic speed sensor with large operating airgap The Infineon XENSIV TLE4959-5U-SP is an integrated differential Hall speed sensor ideally suited for transmission applications. The sensors´ basic function is to provide information about rotational speed and direction of rotation to the transmission control unit. The product includes a sophisticated algorithm which actively suppresses vibration while keeping excellent airgap performance. The product is qualified for automotive usage.