feature:1. This module is a pulse generation module that provides control signals for the stepper driver. To control a stepper motor, a driver must be provided.2. This simple controller + stepper motor + stepper motor + DC power supply can form a simple control platform.3. The controller has 3 kinds of low frequency signals, including high 5.4k-160khz, medium 540-16.6khz, and low 80-2.4khz to choose jumpers.4. It can generate pulse signal and PWM signal, and jumper can be selected.5. Frequency measurement: PUL and common cathode terminal. Different stepper drivers may be marked with different namesEN=ENA=FREE EnablePUL = PULS = CLK pulseDIR = CW = CWW directionCommon anode ion method (B)EN+PUL+DIR+ s to com+.EN - ENPUL - CLKDIR - DIRCommon cathode ion method (B)EN-PUL-DIR-CONNECTED TOGETHEREN + CONNECT ENPUL + to CLKDIR + DIRPackage Included:1 x Control Signal Generator Modulenotes:1. Due to manual measurement, please allow 1-3mm error.2. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks!