【2 Ways Power Supply: Solar(Priority)+ Electric(Secondary)】A smart power controller is included to allow automatic switching of the powe supply between solar panel and AC/DC power adapter. Solar power works when solar energy is equal and greater than 14V; solar + electric work together when solar energy is greater than 0 but less than14V; electric power works when solar energy is 0V. This Solar Fan even works on rainy days!
Quite and waterproof brushless DC motor, 14in nylon-fiber-aluminum blades (7 blades not 3 ), galvanization steel housing and mounting frame, solar wall exhaust fans can be assembled Together(Note: please buy extra screws ), front side metal mesh, roof/wall mounted
【Adjustable Solar Panel】: Horizontally & Vertically (0/30/35 degree. So you can make sure the sun is directly opposite the solar panel. Besides, the panel could be Remote Mounted
Built-in Thermostat Switch, Power on: above 77℉, Power off: below 65℉
AC / DC Power Adapter Length: 3 m (9.84 ft). Lifespan: Brushless DC motore–10 Years; Solar Panel–25 Years; Metal Casing–20 Years; AC/DC Power Adapter–10 Years. Solar wall exhaust fans can be assembled Together(Note: please buy extra screws ). Front side metal mesh. Roof/wall mounted