DescriptionA perfect AC voltage controller for household use. This AC voltage regulator can let you control the fan as you need. Simple to use and can be connected to the electrical appliances by the output, it's equipped with the rotary knob and can be used for controlling light brightness, fan motor speed. With AC 0V-220V continuously adjustable voltage, zero hysteresis, zero latency and superior heat dissipation, the voltage regulator can be applied to large household or small industrial electrical appliances of which power is less than 4000W.Features- Color: As shown - Material: Aluminum+Silicon+Metal+PCB - Input voltage: AC220V - Output voltage: 0-220V adjustable, the voltmeter does not work when the output voltage is lower than 5V. - Ultimate power: 4000W, adapt to 2000W-3000W resistive load. - Voltage regulation range: 0-220V stepless adjustable. - Current Rating: 9A. - Limit current: 18A. - AC 0V-220V wide voltage regulating range, 0-4000W control motor power, professional designed for electronic fan use. - The rotary knob for fan speedcontrol, voltage and more control. - Stable, durable and long service life. Zero hysteresis, zero latency, superior heat dissipation. - Easy to use, plug and play, convenient to connect to the electrical appliances and do not need soldering. - NOTE: The resistive load power should be less than 4000W, and power should be largely reduced(half or more) for inductive or capacitive loads, otherwise controller and load will burn out.Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you!