K&H Pet Products Lectro-Temp Control For use with K&amp;H Manufacturing Lectro-Kennel &amp; Igloo-Style heated pads Allows you to turn the temperature of the K&amp;H pad down, adjustable positions from high to off A must-have for whelping puppies One year limited warranty Allows for adjustable warmth 3-prong plug and requires a 3-prong receptacle.