Features 【3 FREQUENCY SIGNAL】: 5.4k-160khz high frequency, 540-16.6khz average frequency, 80-2.4khz low frequency, with a stable and wide signal frequency range. 【VERSATILE USAGE】:This controller board can be used for adjusting the speed of the stepper motor and forward and backward steering, which is widely used. 【COMPACT SIZE】: This motor drive controller board can be used for 42 57 stepper motors, with compact structure, easy installation and disassembly. 【FREQUENCY AND SIGNAL】: Can measure PUL and common cathode connection frequency, can generate pulse signal, also generate PWM signal and choose jumper. 【FOR STEPPER MOTOR】: This module is a pulse generation module, which provides control signals for the stepper motor and is used with a DC power supply. Specification: Item Type: Stepper Motor Controller Module Power input: DC 8-24V Signal frequency: High 5.4k-160khz, average 540-16.6khz, low 80-2.4khz Package List: 1 x Stepper Motor Control Module Note: Pay attention to the positive and negative poles of the input power supply. Package List 1 x Stepper Motor Control Module