Attention: 1. When using this ozone generator, better to use an electrical fan. and strictly forbid people working in the room with ozone in high concentration. The output high voltage is dangerous. you are strictly forbidden to touch it in any way when it is working. 2. Clean the ceramic plate with ethyl acohol every month, and use it when it fully dry. In this way, to gurantee normal ozone yield. 3. Please stop the device working after 25 minutes' using if without fan , or the device will be too heat to burn down. Double Ceramic Plate 10000 mg/h Equal To 10g/h Shock Treatment Ozone Generator. This heavy duty high power ozone generator is capable of generating a high level of ozone within a short period of time, which is critical for effective treatment. Blue plates work better than the white plates since the silicone gel is moisture resistant. This ozone generator takes 110v. The barebone design is for better air circulation for high level ozone generation. A box fan for cooling is highly recommended while the ozone generator is in operation.