(Allied Precision) Submersible de-icer, perfect for five-gallon buckets, as well as small pails, pans, or bird baths. Built-in thermostat keeps water temperature within the optimal drinking range. Has stainless steel guard to protect pets from the danger of burns. Clamp holds the unit secure. Safe for all non-metallic or metallic containers, and has a safety shut-off system. 200 watts, 120 volts.