FVT SKY III series 12A 4 in1 ESC / Brushless Speed Controller for RC Multicopter Quadcopter W/SBEC 4 in1 FVT SKYIII 12Ax4 ESC / Brushless Speed Controller for RC Multicopter Quadcopter W/SBEC Features: Four (4) speed controllers in 1 board, only 1 pair of battery wire are needed. Safety arming feature: Regardless the throttle stick position, the motor will not spin after battery connected. Throttle calibration function: Throttle range can be calibrated to be compatible with different transmitters. User programmable. Multiple program methods supported: transmitter stick, LED Program Card. 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 ICfor better anti-jamming capability. Specifications: Output: Cont. Current 12A, Burst Current 15A up to 10 seconds. Input Voltage: 4S Lipo or 5-12 cells NiMH. BEC: 1A/5V & linear mode BEC. Max Speed: 210000rpm for 2 Poles BLM, 70000rpm for 6 poles BLM, 35000rpm for 12 poles BLM. (BLM = Brushless Motor) Size: 55*45*9mm Weight: 50g User Program-able: Yes ESC Software: BIHELI Not provide plug (need to buy separately) Package size: 20 * 10 * 2 cm / 8 * 4 * 0.8 in Package weight: 60 g / 2.12 oz Package list: 1 * FVT SKY III series 12A 4 in1 ESC