The W500 Auto Waterer De-icer utilizes multiple thermostats for efficient operation without overheating. Created specifically for automatic waterers/drinkers, but can be used in buckets, tanks and bird baths. Suitable for up to 70 gallons. The low-profile, finned design provides a large surface area, allowing the de-icer to run cooler while putting out the same amount of heat as conventional de-icers. The durable, coated aluminum base has a non-stick coating for easy cleanup and less mineral buildup. Safe for use in plastic buckets or tanks. 6-foot cord. LOCKNDRY compatible. 500 Watts, 120 Volts. cULus Listed.