[Double large current relay]:Build-in two 80A large current relay in this motor speed controller, which ensures a better regulation. [Adjustable direction]:This motor speed controller would allow setting direction of rotation that accomplishes reversing the motor's direction. [Full and good heat dissipation]:The case can provide full with good heat dissipation for the module. [Long life]:This speed controller is made with high quality circuit board, and for long time use. [Stable]:With stable performance, simple and easy-to-use., Manufacturer: Walfront