1Signal Generator Module: This module is a pulse generation module that provides control signals to a stepper driver. 2Control Motor: In order to control a stepper motor, the user must have a driver. This module can perform suggested speed regulation, control forward and reverse rotation, etc. 33 Types of Signals: The controller has high 4k160khz, middle 54016.6khz and low 804khz total 3 types of low frequency signals available for jumper selection. 4Multifunction: This controller module can generate pulse signal, also can generate PWM signal, or can select jumper, various functions. 5Easy to Use: This simple controller can be used with a stepper motor and DC power supply to form a simple control platform.1 x Adjustable Stepper Motor ControllerItem Type: Adjustable Stepper Motor ControllerMaterial: PCBMeasurement Frequency: PUL and Common Cathode