The Farm Innovators Pro Series Circulated Air Incubator with Auto Egg Turner easily accomodates up to 41 eggs. The included fan kit pulls in fresh air to stabilize the temperature and improve hatching. The automatic egg turner turns the eggs completely every four hours to eliminate manual handling and improve hatch rate. A built-in hygrometer measures both internal temperature and relative humidity. Solid state circuitry provides long lasting and reliable temperature setting. A red indicator light shows when the heater is operating. Two large 9-1/2-Inch by 3-1/2-Inch viewing windows allow for observation of eggs. An additional thermometer is included. The durable plastic outer shell protects the incubator and is easy to clean. This is a great incubator for hobbyists and for educational purposes. Made with recycled and insulating polystyrene foam. 120 volts; 40 watts; 0.33 amps.