1. Power button: Long press the power button to turn on the device, the white indicator light will light up, and the fan will gradually rise from the lowest gear to the position of the stepless speed control button. Long press to turn on and off the device.

2. Stepless speed control key: In power on mode, push the push button from bottom to top to adjust the fan speed from low to high. Note: When restarting, regardless of the position of the speed control knob, the fan speed gradually increases from the lowest gear to the position of the stepless speed control knob

2, Working status: 1. When the battery is below 9.1V, the working indicator light will flash quickly, and it will shut down after 10 seconds of low battery protection. 2. When charging, the charging indicator light will flash, and it will remain on when fully charged

3. In the shutdown state, it can be charged normally

4. Supports simultaneous charging and usage