4. Application: Outdoor/Camping/Pet House/Roof... 1. Motor parts (PCB board/wiring/bearings) are coated to prevent short circuit or damage caused by rainwater 2. When it shines directly on the solar panel, the fan can reach 3000rpm. When the sunlight is weak, the fan will run slowly or even stop working 3. Assembly: for greenhouse, chicken coop, kennel, hot air can be expelled to effectively reduce the temperature and keep the air fresh 5. Unique polycrystalline solar panel plus photovoltaic fan with 13.5 inch exhaust fan mount for ventilation, ventilation and dissipation, Weight: 1.68874092692 pounds, Manufacturer: Rtxbvg