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Dual USB Fan Speed Controller - Adjustable 2.5-8V DC Output with Knob Switch for 5V Office/Home Cooling Fans  

(Alternative version with different structure:  
Variable Speed USB Fan Regulator -

<ul><li>Experience a wide stepless governor range from 2.5 to 8.0V for precise air volume control</li><li>Enhance or reduce air volume seamlessly by rotating the knob clockwise or counterclockwise</li><li>Compatible with standard 5V USB fans available in the market</li><li>Versatile power supply compatibility including computers and power banks</li><li>Adjust wind power effortlessly with a simple knob turn</li></ul>

Brand

Model

Feature:
1. You can adjust the wind power at will.
2. Turn the knob clockwise to increase the air volume, counterclockwise to reduce the air volume, and the knob with switch function!
3. The stepless governor output voltage range varies from 2.5 to 8.0V, and the air volume is arbitrarily set! And the range is wider!
4. Suitable for common 5V USB fan in market.
5. Suitable for multiple power supplies such as computer,power bank and etc.

Specification:
Item Type:Fan Speed Controller
Material:Aluminum
Input Voltage:DC4~12V
Output Voltage:DC2.5~8.0V
Rated Power:5W

Package List:
2 x Speed Controller

Note:
How to use: 
Insert the governor into the mobile phone charger, power bank, computer USB, etc., plug the fan and plug it into the governor! Or use Micro USB 5.0V to supply power.
For two-speed fans, please put the fan in one gear, otherwise you may not be able to adjust the speed!  

Universal Product Code (UPC check)

fulfillment

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Dual USB Fan Speed Controller - Adjustable 2.5-8V DC Output with Knob Switch for 5V Office/Home Cooling Fans (Alternative version with different structure: Variable Speed USB Fan Regulator -