This is the MXAP-AE400 ozone disinfection and deodorization machine. I used it for a few hours a day for several months, but I am selling it because I have introduced other equipment. Operation has been confirmed, and it works without any problems. I think it's in generally clean condition. I have two other units purchased around the same time, so bulk purchases are also possible. Please comment if you are interested. Ozone directly destroys viruses and bacteria. Recommended for measures against influenza, viruses, and the coronavirus. Supports up to 30 tatami mats (approx. 49 square meters).