the ESC will cut off its output when the throttle amount is between 25% and 40%. If you increase the throttle amount to above 40% within preset time period (0-90s), the motor will rapidly start up and accelerate to the speed (in 1s) corresponds to the specific throttle amount, complete the shutdown and restart up.If you move the throttle stick to over 40% beyond the preset time period, the ESC will enter the soft start-up process. (Note: This function only effects in “Heli Governor Elf/Store” mode.)