1、Easy for Control: Supports stepless adjustment, the motor controller ensures smooth and stable control on the overall speed and operation. 2、Input and Output: Designed for AC 220V input and AC 0~220V output, the AC motor speed regulator ensures high working efficiency with safety. 3、Wide Application: Ideal for adjusting speed, voltage, temperature, lighting and more, can be used on fan, tungsten bulb, electric furnace, angle grinder, marble machine, blower and morel. 4、The Working Tips: Cannot be used for electrical appliances with circuit boards and capacitive electronic components, such as microwave ovens, rice cooker, water pumps, washing machines, LED energy saving lights, etc. 5、Quick to Install: Light in weight and compact in size as well, the variable motor speed controller is very convenient to install in minutes. Item Type: Motor Speed Controller Model: WF-850 Input Voltage: AC220V Output Voltage: AC 0~220V Use: Widely used for speed regulation, voltage regulation, temperature regulation, light regulation, etc. 1 x Motor Speed Controller