Fangrui Product Details Energy-efficient,and Efficient:the Pure Copper Motor Of This Extractor Ventilation Fan Ensures Exceptional Durability,energy Efficiency,and High Performance. Boosted Impeller Fan Blade For High-speed:the Specially Designed Boosted Impeller Fan Blade Of Exhaust Air Blower Maintains Its Shape Even At High Speeds, Ensuring Consistent And Efficient Airflow. Premium Abs Fire-resistant Material For Durability:crafted From High-quality Abs Fire-resistant Material,this Exhaust Fan Is Built To Withstand Daily Wear And Tear. Design With Check Valve:equipped With A Check Valve Design.the Check Valve Automatically Opens And Closes With The Wind,unwanted From Entering Your Living Space. Energy-saving And:the Inclusion Of A Solar Panel In This Fan Allows For Energy-saving And Environmentally Conscious Usage.harnessing The Power Of The Sun,this Fan Reduces Reliance On Traditional Electrical Sources,resulting In Lower Energy Consumption And A Smaller Carbon Footprint. Exhaust Fan Power:4.8w Solar Panel Power:8w Dc Volt