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- Material for Durability:Crafted from high-quality ABS fire- 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 on traditional electrical sources,resulting in lower energy consumption and a smaller carbon footprint. Exhaust fan power:4.8W Solar panel power:8W DC voltage:12V Motor speed:2100 rpm Noise:40 DB Current:0.4A Maximum power current:0.66A Open circuit voltage:14.4V Short circuit current:0.73A Colour:A: Black Material:ABS Size:4Inch Package Contents: 1 x Exhaust Ventilation Fan 1 x Solar Panel 1 x Solar Panel Bracket 1 Pack x Mounting Screws 1 x English Instruction Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.