This is Hobbywing XRotor Pro 40A ESC version B. Hobbywing XRotor Series ESC is designed specially for multi-copters.The throttle response is improved largely.Great compatibility,advanced intelligentization and strong adaptibility makes this series ESC more popular and applicable.
Foxtech Blheli_S Dshot 30A ESC, with Hardware generated PWM synchronous to MCU yields ultra-quiet motor performance.
Foxtech Blheli_S Dshot 20A ESC, with Hardware generated PWM synchronous to MCU yields ultra-quiet motor performance.