Smart Exhaust Solar Roof Attic Exhuast Fan, Solar Powered Greenhouse Fan, Black

https://www.twingro.com/solar-attic-fan-solar-20-watt-solar-powered-roof-mounted-with-quiet-brushless-24v-dc-motor-bonus-thermostat-and-humidistat-pre-installed-easy-installation-exhaust-fan.html

• Comes with smart thermostat control 87f, automatically work if temerature high 87F when sunshine.
• Brushless motor, Noise Less Than 45db,15 year warranty.
• Adjustable solar panel (any angle), 20W, up to 2000 cool sq. ft. off capacity.
• Durable rust-free aluminum ensures long life & no maintenance. No Battery inside,so it's safe for your house
• The TwinPa Solar Attic Fan is an all-in-one unit that is designed to lower your attic temperatures and stop damage from moisture,good for the environment.