2 PCS HW-602 USB Fan Governor Wind Speed Controller Air Volume Regulator Cooling Mute Multifunction Noise Reduction Switch Module

Input voltage: DC4~12V

1. 0V USB fans on the market. How to use: Plug the male head of the governor into a mobile phone charger, power bank, computer USB, etc., and then insert the fan plug into the female head of the governor to use. Adjustment method: knob adjustment (clockwise increase, counterclockwise decrease). Features: strong wind and weak wind can be adjusted at will, fan stepless speed regulation, wide voltage input compatible with multi-speed power supply. The module is a speed-regulating fan module designed according to the principle of high-frequency switching power supply. The essence is to control the speed of the fan by adjusting the output voltage. Matters needing attention: When used to adjust the fan in two gears, please set the fan to the first gear, otherwise the speed may not be adjusted. Size: 50x18mm