Designed to sit on top of a freestanding wood, pellet or gas stove. It generates it's own electricity without cords or batteries. The ecofan start automatically when placed on top of a stove and adjust their speed with the stove temperature. As the stove heats up, the ecofan runs faster. As the fire burns down and the stove cools, the ecofan automatically turns off. Gold finish. 2-year warranty.