Weojeviy 2PACK USB Fan Speed Controller - DC Stepless Adjustable 5W Mini Fan Regulator (4-12V to 2.5-8V) with On/Off Switch - Perfect for PC Cooling, DIY Projects & Home Office Use

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 .w-e-text table td,.w-e-text table th,;.w-e-text table, 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!

✔Supply Range : fan speed controller DC 4~12V; Output Range: DC 2.5~8.0V; Rated power: 5W (Please do not overload) Fan speed controller is suitable for common 5V USB fans in the market, computer, power bank and etc. You can adjust the air volume as you like through the stepless controller.

✔Principle Of Fan Speed ​​Control : Strong winds and weak winds adjust freely. Suitable for the very common 5.0V USB fan. The non-adjustable fan is a 5V direct fan motor, while the dual stall fan has a boost board inside. When it is shifted into second gear, the boost plate USB 5V is high After the motor, the air volume is large!

✔Use : Insert controller plug cell phone charger, charging treasure, computer USB, fan plug, and then plug in the controller head socket! Or use the micro USB 5.0V power adapter. (Note: When using the dual-speed fan, please switch the fan to the first gear, otherwise it may not be able to adjust the speed.)

✔Instructions For Use : Insert the USB plug of the fan into the USB port of the speed controller and turn the adjustment knob to adjust the small air volume and large air volume. Turn the knob clockwise to increase the air volume. Turning it counterclockwise will soften the air volume and the knob has a switching function.

✔Fan Speed Controller : The output voltage range of the stepless speed controller from 2.5V to 8.0V between the smooth change, the set amount of free airflow and a wider range! A clockwise rotation knob can increase the air volume, a counter-clockwise rotation knob can decrease the air volume, and knob with switch function!