Key Benefits Smart: Integrated Smart Technology Sensored: Great for slow speed driving and next level drag brake performance Program Via Transmitter: Proprietary Text Gen programming allows for programming the ESC from the transmitter Features Smart all-in-one telemetry Pro-level drag brake performance and adjustability RPM/Throttle matching enabled FOC (Field-Oriented Control) equipped 120 Amp power for giant scale crawlers and extremely heavy crawlers 2S-4S LiPo compatible Fast, powerful 32-bit ARM M4 processor Waterproof ESC Waterproof sensor wire with locking plug and gasket Developed and designed by Spektrum engineers, in partnership with the industry's leading ESC manufacturer Compact for easy installation in most applications Ready to install no soldering required Aluminum heat sink for high efficiency Includes optional cooling fan Adjustable high-power BEC (6V or 7.4V) Firmware updatable through the Smart ESC Programming Box High heat-resistant IC connectors, backwards compatible with EC connectors Limited 1-year warranty Multiple Options For Easy Programming Smart ESC Programming Box (V2 Programming Box Required) SmartLink USB Updating and Programmer application Programming from Transmitter via Text Gen Telemetry Multi-point Protection Over-current protection Automatic LiPo low-voltage cutoff Thermal protection Failsafe protection Overview The Spektrum Firma Sensored Smart ESC System is specifically engineered to be used with 6th scale Crawlers and Scalers, such as the Axial SCX6