ESC which features a high-performance 32-bit ARM M4 microprocessor (with a running frequency of up to 72MHz) is compatible with various brushless motors. • Microprocessor powered by a separate DC regulator has better anti-interference performance greatly reduces the possibility of losing control. • DEO (Driving Efficiency Optimization) Technology greatly improves throttle response & driving efficiency and reduces ESC temperature. • Built-in high-power BEC with output voltage adjustable among 5.2V, 6.0V and 7.4V. The BEC module is separate from other circuits on the ESC, so the normal BEC output can be guaranteed (when issue like burnt power board happens) to allow users to get the aircraft back before crash. (Note: the FLYFUN 80A/120A/130A/160A-HV-OPTO-V5 doesn’t have this function.) • Normal/Soft/Very Soft start-up modes are compatible with regular propeller aeroplanes and EDF jet aeroplanes (pls ensure to select the “Very Soft Start-up” mode when using EDF jet aeroplanes). • Separate programming cable for connecting ESC to a LED programme box and allows users to programme the ESC anytime, anywhere. (For detailed info, please refer to the user manual of HOBBYWING LED programme box.) • Normal/proportional/reverse brake modes (esp. reverse brake mode) can effectively shorten the landing distance for the aircraft. (Note: the FLYFUN 130A/160A-HV-OPTO-V5 doesn’t have this function.) • Multiple protection features like start-up, ESC thermal, capacitor thermal, over-current, over-load, abnormal input voltage and throttle signal loss effectively prolong the service life of the ESC.