Welcome to our store! 1. Wide Range of Applications: This speed controller can adjust speed, temperature, voltage, and light, suitable for American standard A and B plugs, which are commonly used in exhaust fans, incandescent lamps, electric stoves, angle grinders, marble machines, and more. 2. High-Precision Display: This variable speed rheostat uses precision regulation to regulate the voltage with high precision. Through the digital display, you can accurately see the machine's operating voltage, and the LED light makes the voltage number clearer in real time. 3. Stepless Speed Regulation: This speed controller uses stepless speed regulation, which is easy to switch depending on the actual situation. Multiple devices can be used and it is easy to operate. 4. 10A Overload Protection: This controller uses an overload protection switch to control the input and output voltages, which has overload and short-circuit protection, replacing boat switches and fuses. 5. Excellent ABS Casing: The casing of this controller is made of excellent ABS material, which is durable and has a long service life. Product Type: AC Motor Speed Controller Material: ABS Plug Specification: EU Plug 220-240V Input: 220-240V Output: 0-220V Speed Regulation Mode: Stepless Speed Regulation Maximum Current: 10A Maximum Power: 4000W 1 x AC Motor Speed Controller Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best possible customer service.