Gerbing 12V Portable Dual Zone Temp Controller The Gerbing coreheat12 temperature controller has two separate temp-controllers that provide separate controls for two different articles of heated clothing, such as gloves and jacket liner, for the same person. Features Attach this temperature controller to any solid object with Velcro or attach to your belt with our convenient, optional clip-on case. Dial in your level of comfort. Digital controllers ensure 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. Note Not for use with two jacket liners only for use with a single jacket liner plus gloves, pants, and/or insoles.