1. Important Parameters: Rated voltage is DC48V, rated power is 1000W, with stronger climbing power, low sound, eliminate tire noise.2. Material: Made of aluminium alloy with design, can the inner circuit and good for heat dissipation to avoid thermal overloading.3. Function: The motor speed controller will help starting more smoothly, ensure more comfortable riding, better ensure your driving safety.4. Accessories: In addition to the necessary speed controller, this product is also equipped with two turning handles, make your installation easier.5. Application: Suitable for wind turbine scooters, small dolphin electric vehicles, mechanical equipment, electric motorcycle DIY engine kits, electric bikes, karts, and other machines.Spec:Item Type: Brush Motor Speed ControllerMaterial: Aluminum alloy, rubberMounting Hole Size: M5Rated Voltage: DC48VPower Rating: 1000WHandle: 1-4VLine: 10 groups (battery, motor, electric door lock, indicator light, brake, speed control handle, brake light, charging port, brake, acceleration function)Application:Suitable for wind turbine scooters, small dolphin electric vehicles, mechanical equipment, electric motorcycle DIY engine kits, electric bikes, kartsHow to Use:The red wire connects the positive pole of the battery cable The black wire connects the negative pole of the battery cable The blue wire connects the positive pole of the motor cableThe yellow line connects the negative pole of the motor cable Package List:1 xBrush Motor Speed Controller1 x Turn Handle (2 Pcs)