This is the only device that provides automatic, daily sanitizing of masks, headgear, tubing, and humidifier chambers while they’re connected to your CPAP machine. It generates O3—a naturally occurring molecule that is 50% more powerful than chlorine bleach—in a closed system that, when used correctly, sanitizes CPAP equipment in as little as seven minutes. (A two-hour resting period following each cleaning cycle passes the ozone through a cartridge filter to help convert it back to regular oxygen.) In independent laboratory tests, it destroyed 99% of germs, bacteria, viruses and mold without using chemicals or heat. A digital timer lets you set daily start time and cleaning cycle duration. Intended to stay continuously connected to your sleep equipment, it is compatible with most CPAP systems and comes with two filters that each last up to six months. and check valve assembly. AC adapter. 12 3/4" H x 11 1/4" W x 11" D. (6 1/2 lbs.)