1、Efficient Solar Panel Pan: These solar fans come with a 16W high efficiency solar panel, providing power for two fans to generate high speed airflow, easily removing hot indoor air and keeping the indoor air cool. 2、Weatherproof Design: The solar panel is made of high strength tempered glass surface and aluminum frame. The mainframe of the solar fan is made of black mirror acrylic panel and ABS protective material, with aluminum alloy mesh, sturdy, waterproofing, can withstand various harsh weather conditions indoors and outdoors. 3、Easy to Install and Use: The back of the solar panel has pre drilled holes for self design and installation, facing the sun directly. The solar exhaust fan comes with an independent switch for manual control of the ventilation fan's on off, easy to use. 4、Note: The solar fan is driven by solar energy and cannot store electricity. It can also run at low speed in weak sunlight. In full sunlight, it can operate at high speeds of up to 240 CFM. Please expose it to sufficient sunlight. 5、Wide Application: The solar fan comes with an extension cord, so you can install it anywhere, such as greenhouse, chicken coop, shed, dog house, window ventilation, barn, cowshed, RV, treehouse, attic, etc.Item Type: Solar Exhaust Fan KitMaterial: ABS+Aluminum Alloy+Solar PanelMaximum Power (Pmax): 16WOpen Circuit Voltage (Voc): 8VMaximum Power Voltage (Vmpp): 6VShort Circuit Current (Isc): 3AMaximum Power Current (Impp): 2.6AOutput: DCWeight: Approx. 760.00g / 26.81oz1 x Solar Panel2 x Fan1 x User Manual