Spektrum RC Firma 45 Smart Lite Brushless ESC, SPMX1106 Feature-packed Firma™ Smart Lite ESCs deliver power and intelligence all-in-one, with no additional modules or links required. This waterproof 45 amp brushless ESC drives your 22S Sprint RTR through almost any racing conditions imaginable, with explosive acceleration and ultra-smooth performance — while feeding real-time telemetry straight to your Spektrum™ transmitter! Fits in the Losi 22S Sprint Car. Spektrum Firma 45 Smart Lite Brushless ESC FeaturesSmart all-in-one telemetryFast, powerful 32-bit ARM M4 processorWaterproofMultiple options for easy programming:Button programmingSmart ESC Programming BoxSmartLink USB Updating and Programmer applicationMulti-point protection:Over-current protectionAutomatic LiPo low-voltage cutoffThermal protectionFailsafe protectionHigh current adjustable BEC (6v or 7.4v @ 4 Amps)eveloped and designed by Spektrum™ engineers in partnership with the industry's leading ESC manufacturerIdeal for Losi 22S Sprint cars running on 2S Lipo setupsCompact for easy installation in most applicationsReady to install — no soldering requiredRugged plastic caseAluminum heat sink for high efficiencyAdjustable high-power BECFirmware updatable through the Smart ESC Programming BoxHigh heat-resistant IC™ connectors, backward compatible with EC™ connectorsLimited 1-year warranty WATERPROOFThe all-weather, waterproof design of Spektrum™ Firma™ Smart ESCs allows them to perform in nearly any terrain under almost any conditions. Firma ESCs keep you going through dust, gravel, snow, and water. Spektrum Firma 45 Smart Lite Brushless ESC OverviewLike every component in the Spektrum™ Smart ecosystem, Firma™ Smart ESCs combine "plug-and-play" simplicity with the ability to communicate with other Smart electronics, creating the best-performing RC system for your vehicle. Firma Smart ESCs do much more than regulate power. They function like a virtual engineer inside your model, providing a direct path to the vital operating data you need to reach peak performance. Firma Smart ESCs give you more confidence that your electronics are all operating at their best. With Firma Smart ESCs, you'll be better connected to your vehicle than ever without installing extra components that work independently. You won't need additional wires, modules, or links. A Firma electronic speed control provides a one-wire solution for obtaining telemetry data such as battery voltage, ESC temperature, and throttle percentage. Firma ESCs gather the data and send it to your transmitter in real-time instead of storing it for an after-run study. You can adjust settings as needed to boost performance on the go. The Firma Smart single-wire telemetry solution has been tested for quality and performance by the best brands in RC. Their verdict? Smart technology is both simpler and superior!