Performance: Maximum current up to 20 A, heat sink and fan required. The input voltage range is from 10 V to 60 V DC and the maximum output current is 20 A (if it is working slowly, it should not exceed 10 A, 450 watts and provide good heat dissipation). Control: Integrated high-performance engine room module for setting the DC engine speed over a wide range using pulse width modulation. Easy to use speed controller for DC motors. Stable performance: PWM DC motor speed controller, small and elegant appearance, very stable performance. Packaged in anti-static bags to prevent damage from static electricity during shipping. Ideal for replacing old or worn out ones. Bring you a whole new experience. HIGH QUALITY MATERIALS: Use high quality printed circuit boards with good workmanship, high hardness, rust resistance, wear resistance, stable size, heat resistance, good electrical conductivity, plastics are not easy to age, insulate and have a longer service life. Service: We are responsible for the products in the store. If you have any questions about the product quality, please contact us in time and we will try our best to reply you within 24 hours. Help >> Need More Help >> Contact us at the top of the page and select Chat Customer Service.