Features1Knob switch to control speed with 4 options: Off, Low, Medium, and High 2It will automatically power off when overload due to the built-in circuit breaker 3Ultra-compact and plugs directly into an outlet, no messy wires 4?It can be widely used for exhaust fan, high velocity inline fan, mini blower and more 5?It's made of material for high safety and long durabilitySpecificationFeatures:Knob switch to control speed with 4 options: Off, Low, Medium, and High. It will automatically power off when overload due to the built-in circuit breaker. Ultra-compact and plugs directly into an outlet, no messy wires. It can be widely used for exhaust fan, high velocity inline fan, mini blower and more. It's made of material for high safety and long durability. With mini size, light weight, and easy to operate. Specifications:Condition: 100% NewColor: BlackVoltage: 120V/ 60HzPlug: US PlugMaximum Input Power: 350WMaximum Input Current: 3ASpeed Range: 50~10000rpmPackage Weight: 125gQuantity: 1pcPackage Included:1 x Fan Speed ControllerNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.Package List Note: Please allow 1-3 mm error/1-3g weight error and actual product color may vary due to lighting conditions.