... solely to clean it.The product is steady, power-saving, easy-use, healthy and graceful. Considering the habit of the user ... the rotary lamina, the indicator flicker once; b. Press "OPEN" button 1 second, the indicator flicker twice, the rotary lamina opened; c ... . Press "CLOSE" button 1 second, the indicator light 3 seconds, the rotary lamina closed ...