Brand Name: Emax Item Name: Simonk Series ESC Current: 12A 20A 30A available Input: 2-3S LiPo Features: Based on Simon K firmware, further optimized to perfect drive performance. Low-voltage protection, over-heat protection and self-check functions. Separate power supply for MCU and BEC, enhancing the ESC's ability of eliminating magnetic interference. Parameters of the ESC can be set via program card or transmitter. Throttle range can be set to be compatible with different receivers. Equipped with built-in BEC. Max speed: 210,000 rpm for 2-pole, 70,000 rpm for 6-pole, 35,000 rpm for 12-pole. Note: this ESC can not work with pixhawk flight controller. package including: 100% Brand new. 1 x Emax Simonk Brushless ESC