Upgrade your brushed motor-equipped vehicles to Spektrum^™ Smart Technology! Feature-packed Firma 2-in1 Smart ESC/Receivers deliver power and intelligence all-in-one, with no additional vehicle modules or links required. Get valuable telemetry data easily and in real time right on your Smart-compatible Spektrum transmitter- including battery voltage, current, ESC temp, and battery data (when using a Spektrum Smart battery). This data will help with increased efficiency and extend battery life and run time.