MR.RC Simonk 20A Brushless ESC Electronic Speed Controller for DJI Flame Wheel F450 F330 Multicopter Quadcopter ESC
MR.RC Simonk 20A Electronic Speed Controller ESC for Quadcopter QAV 250

Features£º
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.
 
ESC Specs:
Max cont. current: 20A
Peak current: 30A (10s)
Voltage: 2-3S lipo, 5-8 Nicad
BEC: 5V/3A
Package size: 10 * 10 * 2cm / 4 * 4 * 0.8in
Package weight: 33g / 1.2 oz

Package list:
1 * MR.RC Simonk 20A Brushless ESC Electronic Speed Controller