Motor Speed Controller Switch PWM Electronic Governor High Power Drive Module DC10‑60V 20A Item Type: Motor Speed Controller Switch Input Voltage: DC10-60V Output Voltage: Linear at load Output Limit Current: 20A (use 10A for a long time, within 450W, pay attention to keep the module heat dissipation) Ultimate Power: 1200W Speed Regulation Type: Current regulation Speed Regulation Method: Potentiometer (linear) Speed Regulation Duty Cycle Range: 0-100% Control Frequency: 25KHZ Wiring Type: Barrier terminal block Knob Cord Length: Approx. 20cm / 7.9in Module Size: Approx. 77 x 45 x 28mm / 3 x 1.8 x 1.1in Motherboard Installation Size: Approx. 73 x 40mm / 2.9 x 1.6in Potentiometer Installation Hole: Approx. 7mm / 0.3in