1. Wide Application: Speed controller can adjust speed, temperature, voltage and light, suitable for US standard A and B sockets, widely used in exhaust fans, tungsten bulbs, electrical appliances, angle grinders, marble machines, blowers. 2. High Precision Display: Rheostat variable speed controller adopts precision regulating knob to regulate voltage with high accuracy. Through the digital display, you can accurately know the working voltage of the machine, and the LED light makes the real-time voltage figure clearer. 3. Stepless Speed Regulation: Speed controller adopts stepless speed regulation, which can easily change speed according to the actual situation, so more appliances can be applied, easy to drive. 4. 10A Overload Protection Switches: Regulator uses overload protection switches to control input and output voltages, which provides overload and short circuit protection, and replaces boat switches and fuses. 5. Excellent ABS Housing: The governor housing is made of