Features: This module is a pulse generation module, which supplies the stepping driver as a signal. If you want to control the stepper motor, it must also be equipped with a driver. This simple controller + stepper driver + stepper motor + for DC power supply can form a simple controller platform. The controller has three frequency signals of high-5.4k-160khz, medium 540-16.6khz and low 80-2.4khz, which can be selected by jumper. It can generate pulse letter and PWM signal, which can be selected by jumper. Frequency measurement: can measure PUL and common cathode (or common anode) two ports. Package Includes: 1x Stepper Motor Pulse Specifications: Material:ABS Net Weight:25g note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.