Description Features: DC 9V~60V DC Speed RegulatorProducts are equipped with external speed control knob(with turn off switch)Products are equipped with a runstopreverse switchThe circuit is stable and reliable, and the heat radiation board area is two times more than that of the same product in the marketThe speed regulator uses PWM technology, which has the characteristics of high conversion efficiency, wide speed regulation range and stable performanceParameters: Working voltage:DC 9 V~60 V (wide range)Size(L*W*H):92 x 52 x 36 mmPeak current: 20 ASpeed range: 0%~Forward reverse:SupportOutput voltage: Load linearSpeed principle:Current regulationSpeed control type: Adjust the currentSpeed adjustment way: Potentiometer (with turn off switch)Red wire connection: power supply + Black wire connection: power supply negativeBlue wire connection: motor positive + Green wire connection: motor negativePackage Include:1 x PWM Controller Note: This DC motor controller input is connected to direct current, CANNOT be connected to alternating current, or it will be burnt. The motor cannot be used in electric vehicles.Make sure the positive and negative polarity is connected correctly, otherwise the controller will be damaged.