Feature:1. FOR STEPPER MOTOR: This module is a pulse generation module, which provides control signals for the stepper driver and is used with a DC power supply.2. FREQUENCY AND SIGNAL: Can measure PUL and common cathode terminal frequency, can generate pulse signal, also generate PWM signal, and choose jumper.3. 3 FREQUENCY SIGNAL: 5.4k-160khz high frequency, 540-16.6khz medium frequency, 80-2.4khz low frequency, with stable and wide signal frequency range.4. MULTIPE USAGES: This controller board can be used for stepper motor speed adjustment and forward and reverse control, which is widely used.5. COMPACT SIZE: This motor drive controller board can be used for 42 57 stepper motors, with compact structure, easy installation and disassemble.Specification:Item Type: Stepper Motor Controller ModulePower Input: DC 8-24VSignal Frequency: High 5.4k-160khz, medium 540-16.6khz, low 80-2.4khz.Package List:1 x Stepper Motor Control ModuleNote:Pay attention to the positive and negative poles of the input power supply.