Equipped with soft start function Numerical control voltage regulation Can set timed shutdown Double click to turn off digital display Usage Method: 1. First, insert the male head of the USB motor speed controller into the phone charger and charge it Connect power ports such as USB for computers and other devices ( that the power of the power port is the required power of the USB speed controller), and then insert the TT motor plug into the USB fan speed controller female head. The default output of the governor is turned on. 2. Turn the dial button left to increase the output voltage; Turn right and the output voltage decreases. 3. Click the dial button to switch the output on or off. 4. Double click the dial button to turn off the digital display, and any button to wake up the digital display. Timed time setting: 1. Long the dial button for 3 seconds to enter the timer time setting interface. "-" represents Timed shutdown, displaying a number representing timed activation. 2. In the settings interface, click the dial button to switch the timing function on or off. 3. In the settings interface, left dial the dial button to increase the timer time and right dial to decrease the timer time. 4. Long the dial button for 3 seconds to exit the timer setting interface and start the countdown. Color:As Shown Material:Plastic+Metal Package Contents: 1 * Governor Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.