Features: * Brand new and high quality * Wide application: The speed regulator can adjust speed, temperature, voltage, and lighting. It is widely used in exhaust fans, filament light bulbs, electric furnaces, angle grinders, marble machines, and blowers. Note: It cannot be used in electrical appliances with circuits. Microwave ovens, induction cookers, rice cookers, water pumps, washing machines, LED energy-saving lamps and other boards and capacitive electronic components * High-quality materials: The variable speed controller is made of high-quality ABS plastic insulated and flame-retardant shell, which does not discolor, deform, crack, and is high temperature resistant. The internal parts are made of thickened phosphor bronze, which is safe and reliable in quality and has a longer service life. * High- for precision display: The fan speed control switch uses a for precision voltage adjustment knob to adjust the voltage. It has high for precision and good stability. The control accuracy can reach 1 volt. Through the digital display, you can accurately understand the working voltage of the machine. The LED light makes the real-time voltage Numbers are clearer * Overload and overvoltage protection: The variable speed fan controller is equipped with an indepe ndent switch to control the voltage, with overload and short circuit protection functions. When the instantaneous current exceeds 15 amps, the switch will automatically cut off power to protect the controller. You can also indicate The light determines the working status of the switch * Rear hook design: In order to facilitate the of the angle grinder, we have specially designed a hook on the back of the speed regulator, through which the speed regulator can be hung on the tool bag of the tool bag, making it easy to carry and more convenient to use. ug and play, simple and practical Specification: Product name: Electronic voltage stabilizer ug: E U, AU, US, UK (optional) Input voltage: AC220V~250V Output voltage: AC0-220V (adjustable) Maximum power: 4000W (load power 2000W) Maximum current: 15A (load current 9A) Product size: 120*65*55mm Note: The power supply of the US standard ug is 100-120V, input 100V, output 0-100V, others are 220V Precautions and instructions for use: 1. The input voltage of this product is AC voltage, the output is AC voltage, the maximum input value is equal to the maximum output value, the voltage is reduced to reduce the power, and there is no voltage boost function. This product is not suitable for those who require very precise speed or require very low speed. 2. Products containing circuit boards and other electronic components in smart appliances cannot be used (such as household water pumps, induction cookers, rice cookers, ordinary LED energy-saving lamps). Only most fans and brushed power tools can be adjusted, other motors alone cannot be adjusted. If the motor already has gears or the motor has high and low speed cables, then a buzzing AC frequency sound will appear or there will be no speed regulation effect if the regulator is connected. 3. Keep out of reach of children, keep away from fire sources, and do not insert foreign objects other than into the . 4. This product is not waterproof and can only be used indoors in dry environments. Be careful of splashing water when using it in wet places such as bathrooms, kitchens, and near fish tanks. Product application scope: Speed adjustment: fans, brushed motors, electric tools (do not have speed gears) Temperature adjustment: electric stove, oven, water heater, heating rod, electric blanket, etc. (with display screen and smart type cannot be adjusted) Dimming: lamp, incandescent lamp, halogen lamp, heat preservation lamp, light strip, etc. (LED energy-saving lamps with circuit board are not adjustable) Package Included: 1 x speed controller Note: 1.The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2.Please allow slight manual measurement deviation for the data.