Usage Tips:Engine speed controller 230VAC 2000WController of rotational speed, voltage and power of all kinds of 230VAC devices.If you need to change the speed of your engine, youve come to the right place.Device designed ro to adjust all kinds of receivers such as:Power tools Universal engines Heaters Fans and other Regulation based on phase regulation.The device equipped with a universal socket ( EU UK) most closely do the Polish standard of sockets and plugs.Description of pins:Power plug Main switch Voltmeter (indicates adjustable output voltage) Voltage regulation potentiometer do connection of receivers (UEUK) Technical parameters:Supply voltage (Input) 200240 VAC Voltage regulation range 30250 VAC Maximum power 2000W Dimensions 120x65x55mm (lengthheightwidth) Degree of protection IP40 Operating temperature 20 do 60C Operating humidity 590% (noncondensing)