1LED display will clearly show the output voltage, and better understand the current and voltage situation. 2Power button with the speed setting knob promises more convenient adjustment with higher accuracy. 3Adopting aluminium plate as the heat sink, the fast heat dissipation will prolong service life, safer to use. 4High power circuit board enables large starting current and stable speed regulation from 1 to 1800rpm. 5The rustproof and sturdy casing can provide secure protection for the controller and prevent it from falling. Item Type: Motor Speed Controller Material: Aluminium Alloy Input Voltage: AC 220V Output Voltage: DC 220V Power: 750W Adjustable Speed Range: 1-1800rpm, adjustable.Speed Range: 0-100%. 1 x Motor Speed ControllerSuitable for motors with power not exceeding 750W.