Material: made of electronic components, internal conductor: pure copper. 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 Dimensions: L*W*H 77MM*45MM*28MM. Main board according to the installation size: L*W 73MM*40MM. potentiometer according to the installation opening: 7MM Package includes: 1PCS PWM DC motor speed controller module Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store