Feature:1. Variable fan speed controller can be perfect for controlling speed of high speed inline fan and mini blower.2. Lightweight speed regulator is practical and environmental friendly, easy to use.3. Motor speed controller is equipped with builtin grounded control outlet and metal clamp at the back.4. And motor governor's high practicality helps be widely used adjusting for the speed of fans, routers, etc.5. Entitled with high practical adoptability, variable fan speed controller quality is guaranteed, you can use it with confidence.Specification:Item Type: Variable fan speed controllerCable Size:(Approx. 1-meter/ 3.3ft) / (Approx. 2-meter / 6.6ft)(optional)Material: Engineering plasticPurpose: Adjust the speed of fans, routers, etc.Output Voltage: AC120VMaximum Current: 15APower: 1800WLeakage Line Length: 0.85M.Package List:1 x Governor 1 x User Manual