I purchased this new and used it in a child's room, but it has been stored in a dark place for the past four years. I have confirmed that it works, and as the photos show, there are no problems with the power supply. The filter likely needs to be replaced, so please understand that. This is a HITACHI air purifier EP-MZ30 with automatic mode, achieving high-performance air purification with an ALLEROFF filter. - Model: EP-MZ30 - Brand: HITACHI - Filter: ALLEROFF FILTER - Color: White - Mode: Automatic Mode - Remote Control: Included Thank you for looking.