1.This Motor PWM Speed Controller adopts with screw terminals easy Installation.<br> 2.Input Voltage Range: DC 6V-DC 60V.Power supply:12V 24V 36V 48V.Output Current: 0-30A(Can not input 220V and 110V household electricity).<br> 3.LED Display Design 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 easily,but input voltage should be equal to the rated voltage of the DC motor 6-60V.<br> 4.speed controller size:13x6x3.2cm/5.1 Inch x 2.4 Inch x 1.2 Inch (l*w*h).button switch size:4x1.8cm/1.5 Inch x 0.69Inch (h*w).potentiometer size: 23 x 20mm /0.9Inch x0.77Inch (h*w). knob size:15.5x23.5mm/0.6 Inchx1 Inch(h*w),Inner hole size:6mm.<br> 5.It is equipped with a momentary start/stop switch and a speed control potentiometer and knob,you can regulator Stepless Variable through the potentiometer to provide a better and stable performance.<br> Speed control type:<br> speed control mode: potentiometer<br> Speed range: 0--100%<br> Control frequency: 15KHZ<br> Wiring type: fence terminal knob<br> Length: 18CM<br> Product net income: 120 grams<br> Panel openings: L x W 92mm x 56mm<br> Speed Digital: Percentage 0-100<br> Colour:As shown<br> Material:ABS<br> Size:95 x 60 x 33.8mm<br> Package Contents:<br> 1 * speed controller<br> 1 * momentary start/stop switch<br> 1 * potentiometer<br> 1 * knob<br> Note:<br> 1.Digital display is a percentage of non-motor actual speed<br> 2.The input voltage must be positive and negative<br> 3.Can not input 220V household electricity<br> 4.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<br> Only the above package content, other products are not included.<br> Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-