![DC brush motor PWM speed DC motor motor pump control board DC brush motor PWM speed DC motor motor pump control board](https://www.bifelectronic.com/2516-large_default/mini-uln2003-five-line-four-phase-stepper-motor-driver-module-driver-board.jpg)
1.On board ULN2003A motor driver chip.
2.Chip commonly used pin has led, convenient connection to use.
3.Pin 5 to 12 v power supply.
4.On board four-way signal lamp 4, and 5 p on board needle socket, can be connected directly to 28 byj - 48 models of stepper motor.
5. PCB board size: 21(mm) x15.5 (mm).