The non-adjustable USB fan is a 5 volt electric fan motor, while the two-speed fan has a boost circuit board inside. When placed in the second gear, the booster board raises the USB 5 volts. When the motor is connected, the air volume will be big!
The stepless governor output voltage range varies from 2.5 volts to 8.0 volts, and the air volume is arbitrarily set! And the scope is wider! Turn the knob clockwise to increase the air volume, counterclockwise to reduce the air volume, and the knob with switch function! First, the function description:
Suitable for very common 5.0V USB fans on the market
Usage:
The male plug of the governor is inserted into the mobile phone charger, charging treasure, computer USB, etc., and the fan plug can be inserted into the governor female head! Or use Micro USB 5.0V to supply power.
power supply range: DC 4~12V
output range: DC 2.5~ 8.0V
rated power: 5W! (Do not overload)
Package included:
1PC*Micro USB Fan Stepless Speed Controller Regulator
Note:
When used to adjust the fan in two stages, please put the fan in one gear, otherwise it may not be able to adjust the speed.
Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.