Superior Performance: The solar panel fan kit pushes hot air out, effectively reducing the room temperature and keeping the air fresh. Automatic Control: When the sun shines directly on the solar panel, the fan can reach 2500 rpm. When the sun is weak, the fan will work slowly or even stop working. Waterproof Performance: The fan motor part (PCB board/wiring/bearings) has been coated to prevent short circuit or damage caused by rain. Energy Efficiency: Our exhaust fan is special solar and working with long service life and energy saving. Wide Application: Solar panel fan kit is an excellent solution for small chicken coops, greenhouses, sheds, pet houses, window exhaust in the hot summer. .