Features： 1、Important Parameters: Rated voltage is 24V, rated power is 250W, the climbing power is stronger, the operation sound is small, eliminate tire noise. 2、Function: The motor speed controller will help starting more smoothly, ensure more comfortable and smooth riding, better ensure your driving safety. 3、Material: The controller housing is made of aluminum alloy with grooves to protect the internal circuit from thermal overload due to good heat dissipation. 4、Safe Ensured: With undervoltage protection, overcurrent protection, stall protection and other protection functions, it ensures the use and safety of electric bicycles. 5、Application: Can provide stable speed and sensitive control of braking and direction changes, suitable for electric scooters, electric bicycles. Specification： Item Type: Brush Motor Speed Controller Material: Aluminium alloy Voltage: 24V Power: 250W Package List： 1 x Brush Motor Speed Controller