Installation Precautions:

1. Installation location: You can purchase 2 or more according to your needs, connect it in greenhouse or install it on the wall, DIY your own air circulation system.There is no built-in battery in the solar panel, it doesn't store power/electricity, only work during the daytime.

2. Installation need to prepare self-tapping screws and tools by yourself, fix the solar power in a place where the sun is directly shining. Because it is powered by solar energy, less sunlight will directly affect the fan speed and will not work at night.

Warm tips:

1. About the probem of solar panel can not be charged, mainly because the maximum power of our solar panel is only 6W, so it charge the devices must put in full sunlight and in direct sunlight can play the panel's maximum role.If sunlight not enough and in cloudy day it doesn't work. It only to use during daylight.Please make sure you charge the devices in this situation.Our solar charger no battery in the panel,so it can't store power/electricity.

2. If you buy the product surface scratches or dent, it may be caused by the extrusion during transportation process, if you encounter such a situation, please feel free to communicate with us,we will return or exchange the product for you free of charge.