Features:This product can control 2-phase 4-wire stepper motor by motor driver board or IR remote controller.0-9 shifts adjustable motor speed with digital display.Can control the forward/reverse rotation of the motor.Press the digital buttons of the remote controller to quickly change the motor speed.Drive voltage is DC 4-5V, which can be powered by USB, 5V mobile phone charger and battery.Specification:Drive voltage: DC 4-6VDrive current: 300-500mAFit motor: 2-phase 4-wire stepper motor (can drive 3-24V stepper motor to rotate, the motor rotation angle is different)Speed display: 0-9 shiftsPCB size: 52*36mm/2.05*1.42inWeight: Approx. 61g/2.1ozPackage list:1 * Stepper Motor Driver Board(Without Battery)1 * Remote ControllerNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.