Check the listing for details. Variable Fan Speed Controller Plug-in Electric 3 Speed Regulator Adjuster Cor.... Condition: New. Listed at 19.99 USD. USER-FRIENDLY & MULTI-FUNCTIONAL: Easily adjust the speed of your fan with a single easy-to-use knob. The operation of our fan speed controller is simple and easy to use. It can be widely used for exhaust fan, high velocity inline fan, mini blower and more. ✓ SAFETY IN MIND: Grounded outlet plug-in type for safe operation with inline fans. No messy wires, Neat and orderly. Made of high quality material for high safety and long durability. ✓ THREE SETTINGS: 3 levels of speed - Low, Medium, High. Variable 3 modes speed options available for your fan. Save energy and control the noise to your liking by changing the speed. ✓ SPECIFICATIONS: Voltage / Frequency: 125V / 60HZ; Max. Amperage: 4.8A. Provide a 15-month warranty.