Keeps your chicken's water and coop warm in sub-zero temperatures - easily Designed with input and suggestions from thousands of customers, it can be used outdoors and chicken water heater for winter is only turned on when absolutely necessary, thus reducing costs and saving a lot of ice breaking work. THERMOSTATICALLY CONTRILLED-No overheating and no scalding of chickens The poultry water heater will automatically heat up when the air temperature reaches approximately 35°F and will stop heating when the temperature exceeds approximately 77°F. So chicken water heater for plastic water containers, it does not become too hot, and can prevent the water from freezing. All heavy duty and the bottom is sealed off from anything getting inside. Easy to clean and to maintain. Chicken water heater for winter specifications- 120V, 125W, 60Hz Poultry water heater Cord- 6 Ft Chicken water heater base-11 inch and 14.6 inch NOTE- Can be used outdoors, but a dry environment will extend the life of the chicken coop water heater. Works with plastic and metal waterer. Used with chicken heater for coop.