Check the listing for details. 1PCS DC 12V 24V Stepper Motor Pulse Generator Module ORIGINAL. Condition: New. Listed at 12.35 USD. Features: 1.this module is a pulse generation module, supply the control signal to stepper driver. To control the stepper motor, it must be equipped with a drive. 2.this simple controller + stepper motor + stepper motor + DC power supply can be composed of a simple set of control platform. 3.the controller has high 5.4k-160khz, middle 540-16.6khz, low 80-2.4khz total of 3 kinds of low frequency signal can be used to select the jumper. 4.can produce pulse signal, can also produce PWM signal, can choose the jumper. 5.the frequency of measurement: PUL and common cathode end. Different stepper driver may mark different name EN=ENA=FREE Enable PUL=PULS=CLK Pulse DIR=CW=CWW Direction Common anode Connection method (B) EN+ PUL+ DIR+ connect together to com+. EN- connect EN PUL- connect CLK DIR- connect DIR