resistance, wear resistance, which is safe and flame retardant. 5. Wide Application: Suitable for speed regulation of fans, motors, and power tools, temperature regulation of ovens, and light regulation of incandescent lamps. Specification: Item Type: Speed Regulator Material: PC Current: Maximum 18A (15A Overload Protection) How to Use: Before use, adjust the knob to the 0 position. Connect the product power cord to a  AC socket. The output voltage is displayed on the voltage meter. (The voltage displayed when there is no load is a virtual voltage. It must be connected to a load to measure the correct voltage.) Connect the electrical equipment to the output socket. Slowly adjust the knob. Clockwise rotation increases the voltage, counterclockwise rotation decreases the voltage. Speed Adjustment: For fans, brushed motors, and power tools (do not use if they already have speed control). Temperature Adjustment: For electric stoves, ovens, water heaters, heating rods, electric blankets, etc. (not adjustable if they have a display screen or smart features). Dimming Adjustment: For tungsten lamps, incandescent lamps, halogen lamps, heat preservation lamps, strip lights, etc. (not adjustable for LED energy saving lamps with circuit boards). Package List: 1 x Speed Regulator 1 x User Manual Note: The peak power of this product module is 4000W. The maximum power of resistive load connected to the power outlet should not exceed 2000W. The maximum power of inductive load should not exceed 500W, and the maximum power of capacitive load should not exceed 300W. Otherwise, the product may be damaged. When adjusting the speed of a fan with a power above 550W, the speed should be left at least half of its maximum speed. For electrical appliances with a power above 1000W, turn the knob to 0 when not in use to avoid excessive instantaneous starting current that may damage the regulator. 1. This product operates on AC voltage for both input and output. The maximum input value is equal to the maximum output value. It can only reduce voltage and power, and does not have a boosting function. It is not suitable for applications that require precise speed control or very low speeds. 2. This product should not be used with smart appliances that have circuit boards or other electronic components (e.g., home water pumps, induction cookers, rice cookers, regular LED energy saving lamps). It is only suitable for adjusting most fans and brushed power tools. It cannot be used with other motors that already have speed control or have high and low‑speed wires. Otherwise, it may produce buzzing or have no speed control effect. 3. Keep out of reach of kids. Keep away from fire sources. Do not insert foreign objects into the sockets other than the plug. 4. This product has no waterproof function and can only be used in indoor dry environment. Beware of splashing when using in wet places such as bathrooms, kitchens, and near fish tanks.