Take control of your heating mat with Sunpack’s . The universal design works with both Sunpack and most other 120-volt heating mats. Simply plug the mat into the controller, plug the controller into the wall and set the temperature probe where you want to control the warmth. Control on the device lets you set the precise temperature for a wide range of uses. Grow seedlings, warm terrariums or even get perfect fermentation with homebrews; SunPack’s controller is only limited by your ingenuity.