Features The scale is clear, can accurately understand current and voltage conditions, and more accurately regulate speed. Aluminum plate heat sink is used to quickly dissipate heat and extend the service life, making it safer to use. High power PCB, the maximum power of this regulator is 750W. Large starting current, stable speed regulation. This regulator can only adjust the engine speed and cannot change the rotation clockwise or counterclockwise. AC input and DC output. The input voltage of this speed controller is 220V AC and the output voltage is 220V DC. Power wiring and motor wiring are both positive and negative. Specification: Item Type: DC Motor Speed Controller Product material: aluminium alloy. Output voltage: DC220V. Input voltage: AC220V. Power: 750 W. Adjustable speed range: 1-1800 rpm adjustable Speed range: 0-100% Package List: 1 x DC Motor Speed Controller Note: Suitable for engines with a power not exceeding 750W Package List 1 x DC Motor Speed Controller