10XPWM DC Motor Speed Controller with Digital Display 30A PWM Adjustable Speed. This Motor PWM Speed Controller adop with screw terminals easy Installation. Input Voltage Range: DC 6V-DC 60V. Supply:12V 24V 36V 48V. Output Current: 0-30A(Can not input 220V and 110V household elricity). LED Display which shows percentage rate of actual speed to maximum speed, so the data is readable through the LED display, you can get a precise data, but input voltage should be equal to the rated voltage of the DC motor 6-60V. Speed controller size:13x6x3.2cm/5.1 Inch x 2.4 Inch x 1.2 Inch (lwh). Button switch size:4×1.8cm/1.5 Inch x 0.69Inch (hw). Potentiometer size: 23 x 20mm /0.9Inch x0.77Inch (hw). Knob size:15.5×23.5mm/0.6 Inchx1 Inch(hw), Inner hole size:6mm. It is equipped with a mory start/stop switch and a speed control potentiometer and knob, you can regulator Stepless Variable through the potentiometer to provide a better and stable. Speed control mode: potentiometer. Wi type: fence terminal knob. Product net income: 120 grams. Panel openings: L x W 92mm x 56mm. Speed Digital: Percentage 0-100. Size:95 x 60 x 33.8mm. 1 mory start/stop switch. Digital display is a percentage of non-motor actual speed. The input voltage must be positive and negative. Can not input 220V household elricity. The input voltage should be equal to the rated voltage of the motor (within 6-60V). Such as motor rated voltage 12 input 12V motor 36V input 36V.