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Fan Speed Governor, Knob Control USB Fan Regulator 2pcs DC4-12V 5W Air Volume Adjust Aluminum  For Home Use For Power Bank

<ul><li>You can adjust the wind power at will.</li><li>Turn the knob clockwise to increase the air volume, counterclockwise to reduce the air volume, and the knob with switch function!</li><li>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!</li><li>Suitable for common 5V USB fan in market.</li><li>Suitable for multiple power supplies such as computer,power bank and etc.</li></ul>

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<br><b>Specification:</b><br>Item Type:Fan Speed Controller<br>Material:Aluminum<br>Input Voltage:DC4~12V<br>Output Voltage:DC2.5~8.0V<br>Rated Power:5W <br><br><b>Package List:</b><br>2 x Speed Controller <br><br><b>Note:</b><br><div>How to use: </div><div>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.</div><div>For two-speed fans, please put the fan in one gear, otherwise you may not be able to adjust the speed!  <br></div>

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