Feature: 1. Wide Application: This speed controller adjusts speed, temperature, voltage, and light intensity. Compatible with Type A and Type B plugs. Suitable for exhaust fans, tungsten filament bulbs, electric stoves, angle grinders, marble machines, and blowers. 2. High-Accuracy Display: Features a precision-adjustment knob for accurate voltage control. Digital display shows real-time operating voltage. LED backlight enhances visibility of the voltage reading. 3. Stepless Speed Control: Enables smooth, continuous speed adjustment without fixed gears. Adapts easily to varying operational requirements across multiple compatible appliances. 4. 10A Overload Protection: Built-in overload and short-circuit protection switches regulate input and output voltages. Replaces traditional boat switches and fuses. 5. Durable ABS Housing: Constructed with high-quality ABS material for wear resistance and extended service life. Specifications: Item Type: AC Motor Speed Controller Material: ABS Speed Control Mode: Stepless Speed Control Package Includes: 1 x AC Motor Speed Controller Note: This speed controller is not compatible with devices containing internal circuit boards, capacitors, or other sensitive electronic components. Not suitable for bedside clip fans, miniature fans, small ceiling fans, LED energy-saving lamps, microwave ovens, induction cookers, light-wave ovens, washing machines, rice cookers, aquarium pumps, or brushless synchronous motors.