Specifications:Input supply voltage: DC 6V-90VControl Power: 0.01-1000W Max Current:15AQuiescent Current: 0.05A (standby)PWM duty cycle: 0-100%PWM Frequency: 16khzDimension: 62*59*28mmColor: Green Features:100% brand new and high quality.The DC Motor Speed Controller allows controlling direction of a DC motor using a Pulse-Width-Modulated (PWM) DC voltage with a Duty Cycle fully adjustable from 0%-100%. The motor speed controller can provide a continuous current of 8A to your DC motor or other DC load.The circuit also includes a 20A fuse, with reverse connection of power supply and control voltage over-voltage protection function.