Package includes: 1pc PWM DC motor speed controller module Material: made of electronic components, internal conductor: pure copper. This controller can continuous change device working current and completely cut off. Design: Made of high-quality circuit board, DC 9V-60V motor speed controller. Ultra-low voltage DC motor speed controller with switch function. If the current is too large, the fuse will automatically disconnect, and the fuse will automatically recover after cooling. Features: Input voltage: DC10-60V. Output voltage: linear under load. Output current: 0-20A. Continuous power: 1200W. Speed regulation type: flow regulation. Speed regulation mode: potentiometer (linear) speed regulation range: 0——. Control frequency: 25KHZ. Size: length * width * height 77mm*45mm*28mm. Product net weight: 73 grams. The size of the motherboard according to the installation: length * width 73mm * 40mm. Potentiometer mounting hole diameter: 7mm., Manufacturer: Gebildet