Features: The service life and adjustment ranges of the fan speed controller are determined by the equipment used. Compact size, high accuracy, the fan speed controller is easy to operate and convenient to carry. With 350W maximums input power and 3Amp maximums input current. The working speed, flows rate and brightness of the fan speed controller are controlled by electronic control. 120V electronic stepless speed controller, the fan speed controller is suitable for lights, fans, power tools, massagers, and pumps. Specifications: Component: ABS Size: about 9.2x5.7x7.3cm/3.62x2.24x2.87inch voltages: 120V/60Hz maximums input power: 350W maximums input current: 3Amp Package Includes: 1pc Fan Speed Controller note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.