FET Speed Controller for Brush Motor High Periodic Drive System. Uses high-performance Blower MOS FET Auto-set atsub function without neutral/forward/backward setting Dust-proof and splash-proof Power switch with dust cover High Response SHR Compatible Ni-MH/Li-Po Battery Select Function Equipped with a low battery function to prevent battery overdischarge. LED checker lamp function for checking neutral/high bond positions Built-in heat protector protects FET from abnormal heat and overloads. Power Supply: NiMH 7.2V/Li-Po 7.4V/Li-Fe 6.6V Max power: forward side: 60A (momentary max 360A), backward: 30A (momentary max 180A) On Resistance: 0.001Ω (Forward), 0.002Ω (Backward) Dimension: 36.5*32.0*18.0mm Weight: 39.0g Motor Supported: 12 turns or more BEC Circuit:6.0V 3.0V Power supply and other devices are required to drive this product, but not included. This product does not use fuel. This product does not include fuel, batteries, charger, paint, etc.