The speed controller has a clear scale, which can accurately understand the current and voltage conditions and adjust the speed more accurately. Safe to use, using aluminum plate heat sink, DC motor governor has fast heat dissipation, and can prolong the service life. Using high power circuit board, DC motor speed controller has large starting current and stable speed regulation. 1HP speed control input voltage is AC220V, output voltage is DC220V, power is 750W. This adjustable speed range of this product is 1 to 1800 rpm, which can well meet your basic speed adjustment needs. Item Type: DC Motor Speed Controller Material: Aluminium Alloy Output Voltage: DC220V Input Voltage: AC220V Power: 750W Adjustable Speed Range: 1 to 1800 RPM Adjustable Speed Range: 0-100%. Suitable for motors with power not exceeding 750W. Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. 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.