Designed to control the speed of AC axial muffin fans rated at 100 to 125V AC. Adjust your fans speed to optimize the airflow and noise for your application. Features connectors that can be attached to one muffin fans terminals. Includes wall-mount screws so you can secure the controller onto a flat surface. Length: 6 Feet Power: 50W or 0.4 A Input: 100 to 125V AC Output: 0 to 125V AC