RUNCCI-YUN 3Pcs USB Fan Speed Controller, DC 5V Stepless Mini USB Fan Governor DC 4-12V to 2.5-8V 5W Regulator Speed Control Knob with Switch

• ★ Material: The USB fan controller is made of an electronic accessory, the inner conductor is made of pure copper, it is durable and durable for you.
• ★ Rated power: 5W (please DO NOT overload), suitable for common 5.0V USB fans
• ★ USB fan speed controller: The wind speed of the fan can be adjusted between 2.5V to 8V depending on your convenience
• ★ Instructions for use: Plug the controller into the phone charger or charging treasure, plug the fan USB plug into the controller USB port, and then turn the adjustment knob to adjust the small air volume and large air volume. Turn the knob clockwise To increase the air volume, the air volume is reduced by turning it counterclockwise and the rotary knob has a switching function.
• ★ Package including: 3 pieces * USB fan speed controller

Product name: Stepless USB Fan Controller USB fan controller Strong / weak wind can be freely adjusted Stepless controller for USB fans Button with switch Note: If you are using the fan with two speed settings, please set the fan to first gear, otherwise it may not be able to adjust the speed. Operating instructions: Suitable for common 5.0V USB fans on the market. Working voltage: DC 4V-12V Output voltage: DC 2.5 ~ 8.0V Nominal power: 5W (do not overload!) Test temperature: -40 ~ 85 ℃ Physical dimensions: 50 * 44 * 18mm