LED display will clearly show the output voltage, and better understand the current and voltage situation. Power button with the speed setting knob promises more convenient adjustment with higher accuracy. Adopting aluminium plate as the heat sink, the fast heat dissipation will prolong service life, safer to use. High power circuit board enables large starting current and stable speed regulation from 1 to 1800rpm. The rustproof and sturdy casing can provide secure protection for the controller and prevent it from falling. Item Type: Motor Speed Controller Material: Aluminium Alloy Power: 750W Adjustable Speed Range: 1-1800rpm, adjustable. 1 x Motor Speed Controller. Suitable for motors with power not exceeding 750W. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.