DYS SN20A Mini 20A SimonK ESC OPTO 2-4S 20-500Hz for QAV160 180 250 300 330 Description: Item Name:SN20A Mini ESC Come with SimonK:Yes BEC: OPTO Input voltage: 2-4s Lipo Signal Frequency:20-500Hz Outout PWM Frequency:18KHz Application:Compatible with SimonK and BLHeli Size(LxWxH): 23x12x4.5mm Weight:7.6g Features: Specially for Multi-copter, throttle respond fast; Suit for throttle, which can compatible well with motor; Throttle signal is twisted pair cable, reduce the crosstalk while the signal transfer by the copper wire and flight more stable; The maximum refresh frequency up to 500Hz throttle signal, compatible with all flight controls; Use new process ultra-low resistance MOSFET with miniaturization, and all flashes are N MOS with high withstanding current; Minaturization design, SN16/20A with high performance capacitor fliter on the board, weight reduce to 2g, also already thicken the PCB copper specially and low heat for small aircraft. Package Included: 1xSN20A ESC