Waterproof Performance : The fan motor part (PCB board/wiring/bearings) has been coated to prevent short circuit or damage caused by rain . Please rest assured to use this high quality solar powered waterproof fan kit Wide Application : This solar panel powered fan is an excellent solution for small chicken coops ,greenhouses ,sheds ,pet houses ,window exhaust in the hot summer Superior Performance : The solar panel fan kit pushes hot air out ,effectively reducing the room temperature and keeping the air fresh . Please rest assured to use this high quality solar panel fan kit Automatic Control : When the sun shines directly on the solar panel ,the fan can reach 3000 rpm .When the sun is weak ,the fan will work slowly or even stop working . Please rest assured to use this high quality solar powered exhaust fan kit Energy Efficiency : Our exhaust fan is special solar and working with long service life and energy saving . Please rest assured to use this high quality solar exhaust fan kit, Manufacturer: Omabeta