KNACRO pwm speed controller PWM electronic governor 40A DC 10V-50V 12V/24V/36V/48V Brushed DC motor controller Maximum Power of 2000W Third gear forward/reverse/stop Input voltage: DC10-50V.Output voltage: Load Linear. Input Current: require large than the motor operating current.Output Current: determine load size. Continuous current: 40A within.Maximum power: 2000W.Knob hole: 7mm. Speed type: modulated current.Speed mode: ON \ OFF linear potentiometer 270 degrees.Speed range: 0-100%. Operating frequency: 25KHZ.Forward Reverse: Support.