Throttle Range Calibration (For the first time using transmitter or changing the transmitter you must set Throttle Range Calibration)
1. Switch off the ESC, then connect ESC with the battery packs and turn on the transmitter; set the direction of the throttle channel to “REV”, set the throttle trim to “0”, set the “EPA/ATV” value of the throttle channel to 100%, and disable the ABS function of your transmitter.
2. Hold the “Set” button and switch on the ESC, wait for about 1 second until the Red LED begins to flash and the motor emits continuous “Beep-beep-“ sound, then release the “Set” button and pull the throttle trigger to the neutral point at the same time, you will hear motor beeps.
3. Push the throttle trigger to end position of forward, press set button for one time, you will hear motor “Beep-beep-”.
4. Now push the throttle trigger to the end position of backward, press “Set” button for one time, you hear motor “Beep-beep-beep”, both of the Red LED and Green LED turned off simultaneity, the Throttle Range Calibration is confirmed, the motor can be started after 2 seconds for battery cells detecting program

https://www.youtube.com/watch?v=51pFvaf0D3M