The New ESC features a new Built-In Communication Protocol for quick setup of parameters, firmware upgrades since we recently developed REDS Racing iOS and Android App. After downloading Reds App and connecting REDS ESC to your phone you can control your ESC (Throttle, Power, Voltage, Current, Temperature, RPM, Timing…) in real time through the mobile app to know the running status; The history of the running status can also be viewed by data logging. You can say goodbye to old devices such as program cards and so on.