ALLIED PRECISION LITTLE GIANT ELECTRIC HEATER BASE FOR WATERERHelps prevent water from freezing in temperatures as low as 10 degrees f Designed for use with double wall founts and other metal containers Perfect for outdoor use in a dry, sheltered area, cord should be protected from animals, use with a ground fault protector Unit will not draw electricity until temps drop below freezing, uses less than 1 amp per hour Made in the USA