Feature: 1. The scale is clear, can accurately understand the current and voltage conditions, and more accurately regulate the speed. 2. The aluminum plate heat sink is used to quickly dissipate heat and prolong the service life, making it safer to use. 3. High‑power circuit board, the maximum power of this governor is 750W. Large starting current, stable speed regulation. 4. The input voltage of this speed governor is AC 220V, and the output voltage is DC 220V. The power wiring and motor wiring are both positive and negative. 5. This governor can only adjust the engine speed, and cannot change the clockwise or counterclockwise rotation. AC input and DC output. Specification: Item Type: DC Motor Speed Controller Commodity Material: Aluminum Alloy Output Voltage: DC220V Input Voltage: AC220V Power: 750W Adjustable Speed Range: 1-1800 rpm Adjustable Speed Range: 0-100% . Package List: 1 x DC Motor Speed Controller Note: Suitable for motors with power not exceeding 750W