Description: Application: This speed controller can be used to control the speed of fan, RC model and pump through potentiometer, and control the temperature of soldering iron and brightness of lamp. Adjustable: This speed control regulator supports Clockwise or counterclockwise adjustment, making your operation easier. Easy connection: The power source positive pole is red wire and the negative pole is black wire, the blue wire is the motor positive pole and the green wire is the motor negative pole. Good performance: This control governor works with PWM technology, helping you control the brightness and speed easily because it works with a high circuit efficiency. Replacement: This speed regulation switch can replace the old or damaged one perfectly, you can use it for a long time because it is made from aluminum alloy. Specification: Material: aluminum alloy. Color: show as pictures. Size: approx. 105*50*33mm/4.13x1.97x1.3inch. Work voltage: DC 9V-60V(9V 12V 24V 48V 60V CC). Rated current: 10A. Max. current: 20A. Output power: 0-1200W. PWM frequency: 25KHz. Speed range: 0-100%. Speed control principle: adjust current. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: 1 Piece Motor Speed Controller.