Feature:1. This module is a pulse generation module and supplies stepper driver as a signal.2. To control the stepper motor, it must be equipped with a driver.3. This simple controller + stepper driver + stepper motor + DC power supply can form a simple control platform.4. The controller has a total of 3 kinds of frequency signals: high 5.4k-160khz, medium 540-16.6khz, low 80-2.4khz.5. It can generate pulse signal and PWM signal, and can be selected by jumping. Frequency measurement: Can measure PUL and common cathode (or common anode) two port.Specification:Condition: 100% Brand NewItem Type: Stepping Motor Drive ControllerMaterial: PlasticSize: Approx. 38.6 x 58 mm / 1.5 x 2.3 inDifferent stepper motor drive port have different labels but the same function:EN=ENA=FREE enablePUL=PULS=CLK pulseDIR=CW=CWW directionCommon anode connection (connection B)EN+ PUL+ DIR+ connected together to the common anodeEN- connects to ENPUL- connects to CLKDIR- connects to DIRCommon cathode connection (connection B)EN- PUL- DIR- connected together to the common cathodeEN+ connects to ENPUL+ connects to CLKDIR+ connects to DIR.Package List:1 x Control Board1 x Gasket1 x Nut