Gerbing 12V Temp Controller (Single / Portable) Dial in your comfort level with a simple turn of the dial! Unlike older rheostat type thermostats, Gerbing's coreheat12 digital temp controllers draw just enough current to maintain the heat you need. Our Temp Controllers allow you to adjust for your desired heat output of our 12v products. Gerbing's Temp Controllers are not designed to be used with our 7v products. If you intend to use this to control both a jacket and gloves simultaneously, you'll also have to purchase a Splitter . It is highly recommended by RevZilla that you purchase a Dual Controller if you are thinking of wearing multiple heated items as you will save money in the long run. Dial in your level of comfort. Digital controller insures that your heated clothing uses only as much power as requested. Wires are UL listed and completely safe, in all weather conditions. 1 Year Warranty. Attach this controller to any solid object with Velcro, or attach to your belt with our convenient, optional clip-on case.