Comes with a DC adaptor to allow you to plug it into your car, truck or mobile home. For those who enjoy traveling with their pets, this unit will reduce pet dander, odors that may get trapped in the interior of your vehicle. Eliminates oders left behind from cigarette smoke. This versatile unit comes complete with a padded carrying case, DC car adapter, 100 - 240V wall adapter and mounting bracket to secure the unit in your car, RV, boat and more! Uses AHPCO (advanced hydration photocatalytic oxidation) technology developed by NASA