Owfeel 3500mg/h Water Air Purifier Ozone Generator Ceramic Plate Accessory Protect the circuit and ceramic plate effectively,lengthen working life. After turning on the power supply,the plate can be fulled effectively,and low-frequency,low calorification. It simply reverts back to oxygen- leaving no harsh chemical byproducts and leaving your home or office fresh and clean! Suits for all kinds of industrys,such as farms,hospital,workshop,public place,etc,bring clean and fresh environment for you. Size:112x50mm