Welcome to our shop! Introducing our high-quality circuit board speed controller. This speed controller is designed to provide a longer service life due to its high-quality circuit board construction. It ensures stable performance, making it simple and easy to use. Equipped with a digital display, the speed controller accurately displays the percentage of actual speed to maximum speed. Additionally, it features a power-off memory function, which allows it to remember the last set speed value after power off. This speed controller is professionally manufactured with superb craftsmanship, ensuring high reliability. It is suitable for stepper motors and DC motors. Included in the package: - 1 x Speed Control Module - 1 x Cable 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactory after-sales service.