HOBBYWING Skywalker Quattro 25A x 4 4-in-1 Speed Control for Quadcopters

Specifications 1.Hobbywing 25A 4-in-1 ESC for Quadcopter 4 speed controllers in 1 board

2.Powerful switch mode built-in BEC

Features -4 speed controllers in1board, only 1 pair of battery wire is needed.
-Powerful switch mode built-in BEC (the BEC voltage outputs from the S3 connector).
-Multiple protection features: Low voltage cut-off protection / over-heat protection / throttle signal loss protection.
-The throttle range of each ESC can be calibrated to be suitable for different multi-rotor flying control systems / transmitters.
-Maximum speed: 210000 RPM (2 poles motor), 70000 RPM (6 poles motor), 35000 RPM (12 poles motor). Product Details -MAX PWM input up to 432Hz, and during real test, it works without any problem with flight controls like DJI which claims with max PWM of 500Hz. Item Packing -HOBBYWING Skywalker Quattro 25A x 4 4-in-1 Speed Control  x 1