KNACRO Brushed DC motor controller DC 9-55V 60A PWM stepless electronic speed control switch 12V/24V/36V/48V Maximum power 3300W Input voltage: DC 9-55V.Output voltage: Load Linear. Input Current: require large than the motor operating current.Output Current: determine load size.Continuous current: 60A within. Maximum power: 3300W.Knob hole: 7mm. Speed type: modulated current.Speed mode: ON \ OFF linear potentiometer 270 degrees.Speed range: 0-100%. Operating frequency: 15KHZ.Terminal Type: Pressure riveting line terminal.