Feature: 1. Power Supply: 15‑160VDC or 5‑12VDC. If using a 5‑12VDC power supply, the positive pole is connected to the DC 5‑12V input, and the negative pole is connected to the common cathode terminal. 2. 3 Frequencies: 3 frequencies, high 5.8KHZ to 127KHZ, medium 590HZ to 15.8KHZ, low 82HZ to 2.3KHZ 3. Drive Control: To control a stepper motor, connect to a drive. Measurement frequency can be PUL and common cathode terminal (GND) two ports. 4. Positive and Negative Pulses: EN+ and EN‑ are used to enable positive and negative terminals; DIR+ and DIR‑ are positive and negative directions. 5. PCB Board: Step motor adopts PCB board, which is resistant to high temperature and cold, and will not be deformed after long term use, thus ensuring long term stability Specification: Item Type: PWM Adjustable Stepper Motor Controller Material:PCB Power Supply Voltage: 15-160V, 5-12V Frequency: Height: 5.8KHZ to 127KHZ Middle: 590HZ to 15.8KHZ Low: 82HZ to 2.3KHZ. Package List: 1 x PWM Adjustable Stepper Motor Controller