Welcome to our store! Flexible installation: The external potentiometer can be installed anywhere for long-distance operation based on actual needs. Versatile Use: This DC motor speed controller can be widely used to control the speed of a fan/pump/other DC load, or to dim the brightness of DC lights or LEDs. Durable Construction: This DC motor speed controller is made of high-quality material, ensuring long-lasting use. PWM Control: The motor speed controller allows the use of pulse width modulation (PWM) DC voltage to control the direction of the DC motor. Safe and Reliable: This motor controller has passed numerous safety tests and is safe and reliable. You can use it with confidence. Specifications: Rated Current: 40A (maximum output current) Power Requirements: 10-50VDC. Frequency: 12000HZ Control Motor Power: 0.01-2000W. Operating Voltage 12V: 480W (max); Operating Voltage 24V: 960W (max); Operating Voltage 36V: 1440 W (max) Package Includes: 1 x DC Motor Speed Controller Customer satisfaction is our top priority. If you encounter any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We are committed to providing you with the best after-sales service.