The Velineon® VXL-3s forward/reverse electronic speed control simplifies brushless technology with easy, built-in profiles and intuitive programming. Tri-mode operation auto detects the motor type for brushed, sensored or sensorless brushless motors. The VXL-3s™ uses advanced circuit design that allows sensorless brushless motors to operate with the smoothness and precision of the best brushed systems. It sets up, operates, and programs just like the Traxxas XL-5™ family of ESCs so there's no tricky new procedures to learn. Traxxas' exclusive patent-pending Training Mode™ is also included to limit full throttle to 50% for young or inexperienced drivers. For the most advanced users, the VXL-3s is equipped with two-stage low voltage detection to allow LiPo battery use, including powerful 11.1-volt 3S packs!