Allied Precision Electric Heater Base for Waterer is your i solution for preventing icy water in zing temperatures as low as 10 degrees Fahrenheit. Designed specifically for use with double wall founts and a variety of metal containers, this heater base is for outdoor use in dry, sheltered environments. It operates efficiently by only drawing power when temperatures fall below zing, consuming less than 1 amp per hour, making it an energy-saving choice. To ensure safety, it is to use this unit with a ground fault protector and to protect the cord from potential damage caused by animals. Model Number: