Features Reliable Materials: Use high voltage MOS tube, high voltage high frequency resistor capacitor, brake fuse, not easy to heat. Standard aluminum and stainless steel shell protects internal circuit and component. Stop Function: On board switch has operation stop brake function, the adjustable potentiometer soft cable can be separated with a length of 30cm. Circuit Optimization Design: Duty cycle is 0 to 100% adjustable, the motor is stable without vibration, with power indication, stable circuit design, can work for a long time. Widely Use: Speed controller is used for DC brush motor, suitable for motor of auto cooling fan, auto air conditioner, exhaust fan, treadmill, etc., can also be used for dimming DC lamp or controlling DC heater. Wide Range: DC motor speed controller can adjust the output voltage of DC10V to 210V, with a high continuous current of 10A, frequency is 12KHZ. Specification: Item Type: DC Motor Speed Regulator Material: Aluminum Alloy, Stainless Steel, Brass Output Voltage: Linear Under Load Continuous Current: 10A Speed Regulation Mode: Potentiometer (Linear) Regulated Voltage: DC 10-210V Maximum Applicable Motor Capacity: 200W Knob Specification: 500K With Switch Wiring Type: Fence Terminal Block Input Voltage: AC 220V Package List: 1 x DC Motor Speed Regulator Package List 1 x DC Motor Speed Regulator