Feature:1. Signal Generator Module: This module is a pulse generation module that provides control signals to a stepper driver.2. Control 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.3. 3 Types of Signals: The controller has high 5.4k160khz, middle 54016.6khz and low 802.4khz total 3 types of low frequency signals available for jumper selection.4. Multifunction: This controller module can generate pulse signal, also can generate PWM signal, or can select jumper, various functions.5. Easy to Use: This simple controller can be used with a stepper motor and DC power supply to form a simple control platform.Specification:Item Type: Adjustable Stepper Motor ControllerMaterial: PCBMeasurement Frequency: PUL and Common Cathode.Package List:1 x Adjustable Stepper Motor ControllerNote:Different stepper drivers may be marked with different namesEN = ENA = FREE enabledPUL = PULS = CLK pulseDIR = CW = CWW direction