Digital PWM DC Motor Speed Controller Speed Switch Display Module Description: Input voltage : DC 6V-28V Current range : 0-2A Speed range : 0%-100% Speed ratio number: 0-99 Weight: 21.6g Note: Red wire to positive power supply Black wire to negative power supply Yellow and white wires connected to the motor Package included: 1 x DC 6V-28V Digital PWM DC Motor Speed Controller