^{_{FVT 20A 4-in-1 ESC/ Brushless Speed Controller (SKY III series)}} 

Specifiations:

ESC in the Quattro:  4 in 1

Output:  Continuous 20A, Burst 25A up to 10 seconds (for each ESC).

Input Voltage:  2-6S Lipo or 5-12 cells NiMH.

BEC:  3A / 5V Switch mode BEC.

Refresh rate of the throttle signal:  50Hz to 432Hz.

Size:  60mm*55mm*12mm

Weight:  112g

Features:

Four (4) speed controllers in 1 board, only 1 pair of battery wire is needed.

Safety arming feature: Regardless the throttle stick position, the motor will not spin after battery connected. 

Throttle calibration funtion: Throttle range can be calibrated to be compatible with different transmitters.

User programmable. 

Multiple program methods supported: transmitter stick. Very easy to program the ESC at home or at the flying field.

Compatible with Lipo battery and NiMH battery.

Internal timing can be changed to be suitable for different brushless motors.

Full protection: Low voltage cutoff protection / Over-heat protection / Throttle signal loss protection.

Microprocessors use separate voltage regulator IC for better anti-jamming capability.