Check the listing for details. PWM DC Motor Speed Controller DC 10 -50V Digital 0 -100% Adjustable Drive Module. Condition: New. Listed at 17.99 USD. PWM DC Motor Speed Controller DC 10-55V Digital Display 0 -100% Adjustable Drive Module Input MAX 60A 12V 24V 36V 48V Specification: Input voltage: DC 10-50V (equal to the rated voltage of the motor) Output voltage: linear under load Maximum current: 60A Continuous current: 40A Speed regulation type: current regulation Speed regulation mode: potentiometer (linear) Support motor: DC brush motor Forward rotation reverse: Support Speed range: 0 -100% Control frequency: 15KHz Wiring type: terminal Knob Specification: 100K (with switch) Wiring type: fence terminal block Product weight: 170g Motherboard size: 100 * 76 * 28mm Note: Electric bicycles cannot be used, including electric bicycle motors The input voltage must be divided into positive and negative can not input 220V household electricity The input voltage should be equal to the rated voltage of the motor (within 10-55V) Package Included: 1 * PWM DC Motor Speed Controller DC 10-55V Digital Display 0 -100% Adjustable Drive Module Input MAX 60A 12V 24V 36V 48V