dji FlameWheel550 F550 - ESC Sound Introduction; Specifications

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ESC Sound Introduction
ESC State
Sound
Ready
♪1234567
Throttle stick is not at bottom
BBBBBB…
Input signal abnormal
B--------B--------B…
Input voltage abnormal
BB---BB---BB---BB…
Tips:
DJI ESCs are specially designed for multi-rotors. When use with DJI autopilot
systems, you do not have to setup any parameters or calibrate travel range.
Specifications
Frame
Diagonal Wheelbase
550mm
Frame Weight
478g
Takeoff Weight
1200g ~ 2400g
ESC
Current
30A OPTO
Signal Frequency
30Hz ~ 450Hz
Battery
3S ~ 4S LiPo
Motor
Stator size
22×12mm
KV
920rpm/V
Propeller
10 × 4.5in (@3S); (Optional 8 × 4.5in (@4S))