Speed controller for DC motor, up to 500w, 48volts. This controller may be used for replacement of most electric tricycle and other kinds of electric scooters, e-bikes, or e-atvs. Check that voltage is compatible, motor is of same or less watts and for similarity in size, shape and color. Operating conditions: -25-45 centigrade match motor: DC brushed motor brake handle: Mechanical normally open speed regulator 1-4 v(throTTLe )ebike motor speed controller.