1. Plug in the power,waiting for nightfall,enjoy the wonderful world. 2. This light sensor for intelligent control of light,automatically changes. 3. Bending the mushrooms into a natural state. 4. The LED lights can be replaced for the design,if the light does not shine at night,in most cases may be the LED is damaged,replace the LED,be sure to disconnect the power plug,and then took off mushroom shade,the same type of LED can be replaced.