Review on Enerzen O-922D - Digital Ozone Generator - O3 Air Purifier Ionizer Deodorizer Sterilizer with Customizable Settings Ideal for All Room Sizes by Christine Noland

Fan and ozone are adjustable, but the fan also automatically adjusts to the selected time with a 30-second delay, the time is set in 15-minute increments, which is a good one Function can be controlled in different scenarios, although the instructions lack optimal knowledge for operation. I have another similar ozone generator and the time is set for an hour until it skips to run every two hours. What could be less convenient with a five second delay to start a decent instruction manual?