Designed for easy use, simply connect the solar panel to the fan interfaces and let it work under sunlight The fan operates at a faster speed when exposed to direct sunlight and slows down or stops working when sunlight is weaker This solar powered fan effectively reduces indoor temperature by pushing out hot air and bringing cool air, making it perfect for chicken coops, greenhouses, sheds, pet houses, and window vent With its waterproof coating, the solar panel is resistant to rainwater, ensuring a long and suitability for outdoor environments Please note that the USB interfaces should not come into with water Keep your pets shelter cool with this waterproof exhaust fan powered by a 10W solar panel Enhancer the comfort of your furry in their dog house or chicken with this solar powered fan Say goodbye to stuffy and hot conditions, and a pleasant living space for your pets