ITEM NAME:4Pcs Simonk 30AMP 30A SimonK Firmware Brushless ESC w/3A 5V BEC For DJI F45 Q2K8 4Pcs Simonk 30AMP 30A SimonK Firmware Brushless ESC w/3A 5V BEC For DJI F45 Q2K8 30A ESC for multirotor. This hardware, with the SimonK firmware, gives you the perfect solution for multirotor use. Highest efficiency 100% N-FET design. Highest accuracy with Crystal Oscillator (Temperature won't affect the PWM operating range like other cheap ESC's). No low voltage cutoff, because any cutoff in a multirotor = crash. No over temp cutoff, because any cutoff in a multirotor = crash. Super high refresh rate, no buffering of the input signal, resulting in more than 490Hz response rate. 16KHz motor frequency, giving fastest response of the motor, and quietest operation as well (no 8KHz squeal). Super simple, foolproof operation! Nothing to program other than the throttle range. Max cont. current: 30A Peak current: 30A (10s) Voltage: 2-3S lipo, 5-8 Nicad BEC: 5V/3A Color: Red Item size: 13 * 8 * 4cm / 5 * 3 * 01.6in Item weight: 110g / 3.9oz Package List: 4 * Simonk 30AMP 30A SimonK Firmware Brushless ESC w/ 3A 5V BEC Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm..4 Simonk 30AMP 30A SimonK Firmware Brushless ESC w/ 3A 5V BEC. This hardware, with the SimonK firmware, gives you the perfect solution for multirotor use. 30A ESC for multirotor. current: 30A. Peak current: 30A (10s).